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#1
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
I haven't found any info regarding repair of these DVDirect recorders, and
was wondering if anyone had accomplished any repairs. http://store.sony.com/p/VRD-MC5/en/p/VRDMC5 The production date is 2007. These Sony VRD DVDirect recorders record to DVD from sources of composite or S-video, digital video/firewire, and memory cards.. or directly from some models of Handycams. The unit appears to be dead, except that the "power on" LED turns on when the Power button is pressed (but doesn't turn off when pressed again). No display on the LCD, no drawer extend when Eject is pressed and no other LEDs are illuminated (there are several mounted directly to the board for diagnostic purposes, presumably). The circuit board is marked with some voltage test points, and the only voltages which are present are 12V (input voltage) and 5V. Missing are 3.3, 1.8 and 1.25V, however I'm not certain that all of these are standby voltages. I've only seen and checked 1 fuse (a dual 3A device) and there doesn't appear to be any others. Any info related to the missing voltages and functions would be very much appreciated. -- Cheers, WB .............. |
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#2
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
Wild_Bill wrote in message
... I haven't found any info regarding repair of these DVDirect recorders, and was wondering if anyone had accomplished any repairs. http://store.sony.com/p/VRD-MC5/en/p/VRDMC5 The production date is 2007. These Sony VRD DVDirect recorders record to DVD from sources of composite or S-video, digital video/firewire, and memory cards.. or directly from some models of Handycams. The unit appears to be dead, except that the "power on" LED turns on when the Power button is pressed (but doesn't turn off when pressed again). No display on the LCD, no drawer extend when Eject is pressed and no other LEDs are illuminated (there are several mounted directly to the board for diagnostic purposes, presumably). The circuit board is marked with some voltage test points, and the only voltages which are present are 12V (input voltage) and 5V. Missing are 3.3, 1.8 and 1.25V, however I'm not certain that all of these are standby voltages. I've only seen and checked 1 fuse (a dual 3A device) and there doesn't appear to be any others. Any info related to the missing voltages and functions would be very much appreciated. -- Cheers, WB ............. are there "missing" devices outlined/labelled on the overlay? the traces from the /some 3.3,1.8,1.25 probably go to those missing devices if you trace them along |
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#3
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER REVISITED
After spending some time checking various other marked test points to make
some notes, also checked the ESR of the aluminum electrolytic surface-mount caps (absolutely fantastic tool.. thanks, Bob Parker). Out of the 8 caps marked 10uF 16V, 5 of 'em had ESR readings of 9 or 10 ohms. The larger value caps (100uf, 220uf 16V) had reasonable ESR readings. One of the larger caps(?) is clearly marked 220C UD.. I dunno what that's supposed to mean, but it looks identical to the other 220uF caps, including the black semicircle for the negative terminal. Anyone familiar with these markings? I'll see if I can get some replacement caps, and report back with any changes. -- Cheers, WB .............. "Wild_Bill" wrote in message ... The unit appears to be dead The circuit board is marked with some voltage test points, and the only voltages which are present are 12V (input voltage) and 5V. Missing are 3.3, 1.8 and 1.25V, however I'm not certain that all of these are standby voltages. Cheers, WB ............. |
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#4
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
That's a possibility, but I won't be able to trace the double-sided
(populated both sides) surface mount board since the traces are fairly complex.. passing under components and a multitude of opposite side vias. Ya gotta admire the process of developing products like these, but they're not very service-friendly. Some components are as small as a few grains of common table salt. Since you asked, unlike many modern devices, there is only 1 omitted large IC and relatively few scattered smaller components. -- Cheers, WB .............. "N_Cook" wrote in message ... are there "missing" devices outlined/labelled on the overlay? the traces from the /some 3.3,1.8,1.25 probably go to those missing devices if you trace them along |
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#5
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
On Sun, 25 Nov 2012 08:39:05 -0500, "Wild_Bill"
put finger to keyboard and composed: I haven't found any info regarding repair of these DVDirect recorders, and was wondering if anyone had accomplished any repairs. http://store.sony.com/p/VRD-MC5/en/p/VRDMC5 The production date is 2007. I couldn't locate a free service manual, but FWIW I found the following documents during my search. Technical Bulletin - No Sound when Dubbing / Error Message Appears: http://www.getmanual.com/gmn/sb/sony/08hv001.pdf Technical Bulletin - Format Error / No Sound: http://www.getmanual.com/gmn/sb/sony/08hv009.pdf Instruction Manual: ftp://ftp.vaio-link.com/pub/manuals/...er/VRD-MC5.PDF Operating Instructions Supplement: http://portalsso.vansd.org/portal/pa...Supplement.pdf Quick Guide: http://portalsso.vansd.org/portal/pa...rder_QUICK.pdf These Sony VRD DVDirect recorders record to DVD from sources of composite or S-video, digital video/firewire, and memory cards.. or directly from some models of Handycams. The unit appears to be dead, except that the "power on" LED turns on when the Power button is pressed (but doesn't turn off when pressed again). No display on the LCD, no drawer extend when Eject is pressed and no other LEDs are illuminated (there are several mounted directly to the board for diagnostic purposes, presumably). The circuit board is marked with some voltage test points, and the only voltages which are present are 12V (input voltage) and 5V. Missing are 3.3, 1.8 and 1.25V, however I'm not certain that all of these are standby voltages. I'd look for 3-terminal linear regulators, something like an LD1117-33 or LD1117-18: http://www.datasheetcatalog.org/data...cs/mXuqtqv.pdf Alternatively, look for switchmode step-down buck regulators. These will be located near coils. I suspect that 3.3V and 1.8V may the Vio supplies for the main microcontroller and for the SDRAM and flash memory ICs. The Vcore supply may be 1.25V. If I'm right, then it could be that the device is in fact in standby mode, and it may require a common enable signal to turn on each of these supplies. I've only seen and checked 1 fuse (a dual 3A device) and there doesn't appear to be any others. Any info related to the missing voltages and functions would be very much appreciated. A photo would help a lot. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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#6
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
You always seem to find info that few others are able to Franc, thank you.
I'd seen the consumer/user manuals on the Sony site, but hadn't found anything else not even from the eservice site. I was a bit surprised that none of the various Sony VRD-MCx models had been mentioned in the SER archives (attributable to the throw-away society mentality, I guess). I haven't been doing repair work for quite some time, but I sometimes buy as-is stuff to see if there's anything interesting to discover (a 2007 model is far newer than equipment I was familiar with). I have experience with voltage regulators, and your recommendation is a sensible approach, if the devices are clearly marked.. I've got magnification, but odd numbering methods quickly turn a repair into a major research project. I'll see if I can get some decent pics posted to Flickr. Replacing caps may turn out to be a waste of time, but then I'll know better than to buy any more of this particular model. -- Cheers, WB .............. "Franc Zabkar" wrote in message ... I couldn't locate a free service manual, but FWIW I found the following documents during my search. Technical Bulletin - No Sound when Dubbing / Error Message Appears: http://www.getmanual.com/gmn/sb/sony/08hv001.pdf Technical Bulletin - Format Error / No Sound: http://www.getmanual.com/gmn/sb/sony/08hv009.pdf Instruction Manual: ftp://ftp.vaio-link.com/pub/manuals/...er/VRD-MC5.PDF Operating Instructions Supplement: http://portalsso.vansd.org/portal/pa...Supplement.pdf Quick Guide: http://portalsso.vansd.org/portal/pa...rder_QUICK.pdf I'd look for 3-terminal linear regulators, something like an LD1117-33 or LD1117-18: http://www.datasheetcatalog.org/data...cs/mXuqtqv.pdf Alternatively, look for switchmode step-down buck regulators. These will be located near coils. I suspect that 3.3V and 1.8V may the Vio supplies for the main microcontroller and for the SDRAM and flash memory ICs. The Vcore supply may be 1.25V. If I'm right, then it could be that the device is in fact in standby mode, and it may require a common enable signal to turn on each of these supplies. A photo would help a lot. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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#7
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
On Tue, 27 Nov 2012 07:57:25 +1100, Franc Zabkar
put finger to keyboard and composed: Instruction Manual: ftp://ftp.vaio-link.com/pub/manuals/...er/VRD-MC5.PDF Oops, I mistook that for an English manual. There are also manuals in other languages, but I can't find an English one: ftp://ftp.vaio-link.com/pub/manuals/consumer/ - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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#8
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
For those who may be interested, the operation/user manuals are on the Sony
site: http://esupport.sony.com/US/p/model-...ls#/manualsTab Other related info: http://esupport.sony.com/US/p/model-...5e14#/howtoTab -- Cheers, WB .............. "Franc Zabkar" wrote in message ... On Tue, 27 Nov 2012 07:57:25 +1100, Franc Zabkar put finger to keyboard and composed: Instruction Manual: ftp://ftp.vaio-link.com/pub/manuals/...er/VRD-MC5.PDF Oops, I mistook that for an English manual. There are also manuals in other languages, but I can't find an English one: ftp://ftp.vaio-link.com/pub/manuals/consumer/ - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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#9
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
I've posted several pics of the VRD-MC5 circuit board with brief
descriptions in a Flickr set. http://www.flickr.com/photos/5234515...389280/detail/ Some photo viewer programs will allow considerable enlargement with the zoom feature, enough to make all the silkscreened designations on the board easily readable (pics taken in 3MB mode are about 800KB in size). -- Cheers, WB .............. "Franc Zabkar" wrote in message ... A photo would help a lot. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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#10
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
On Wed, 28 Nov 2012 05:35:48 -0500, "Wild_Bill"
put finger to keyboard and composed: I've posted several pics of the VRD-MC5 circuit board with brief descriptions in a Flickr set. http://www.flickr.com/photos/5234515...389280/detail/ For those that wish to avoid a click-fest, here are your hires photos: http://farm9.staticflickr.com/8339/8...97c72ff6_k.jpg http://farm9.staticflickr.com/8069/8...e168394c_k.jpg http://farm9.staticflickr.com/8201/8...d5ddcf70_k.jpg http://farm9.staticflickr.com/8482/8...385404db_k.jpg http://farm9.staticflickr.com/8197/8...53d08a78_k.jpg http://farm9.staticflickr.com/8067/8...585756fb_k.jpg http://farm9.staticflickr.com/8489/8...b7e45142_k.jpg http://farm9.staticflickr.com/8208/8...73232b3b_k.jpg http://farm9.staticflickr.com/8198/8...de961f4d_k.jpg I couldn't find any data on the Mediatek MT1888E DSP/RF or MT8108ADE, but the following service manual has some useful circuit diagrams: Daewoo DVD Recorder Service Manual (models DW-K3AD2N-DS, DW-K3BD2N-DS, DW-R631/DW-R632): http://www.daewoo.cl/sta-info/manuals/vidvd/DW-R631.pdf The above unit contains a Mediatek MT1888E DSP/RF and MT8105B MPEG codec. I suspect that the MT8105B might be functionally similar to the MT8108ADE (or MT8108BDE), but that's only a guess. Both chips require +3.3V and +1.8V supplies. The board has a ISL6227CAZ dual PWM controller adjacent to the 3.3V and 1.8V test points, so I suspect that this IC is responsible for these two supplies. Each PWM controller has its own enable pin, so I would check these. There is also a MOSFET (RSS040P03) near the DC power socket which appears to function as a high-side power switch. I would confirm that it is switching +12V. The AT1796-50A part appears to be responsible for the +5V supply. The switches are a bit of an enigma. I would have expected that there would be a microcontroller associated with the display, and that this would be responsible for waking the board from standby. So why are the switches on the main board on not on the display PCB? AFAICS, neither the MT1888E nor the MT8108ADE could be controlling the dual PWM controller IC (since they are both dependent on the supplies from this IC). Alternatively, could the power button be connected to some simple latch logic? Here are some datasheets that may be helpful: AT1796-50A, Aimtron, 150kHz, 3A Step-Down Switching Regulator: http://www.electro-tech-online.com/c...-50_488409.pdf ISL6227CAZ, Intersil, Dual Mobile-Friendly PWM Controller with DDR Option: http://www.intersil.com/content/dam/...n90/fn9094.pdf RSS040P03, Rohm, P-channel MOSFET, -30V, -4A: http://doc.chipfind.ru/pdf/rohm/rss040p03.pdf 90C46D, OnSpec, ATA/ ATAPI Host to Flash Media R/W Controller: http://www.onspecinc.com/90C46DMoreInfo/90C46D_Desc.htm http://www.onspecinc.com/90C46DMoreI...46D_REV0_9.pdf http://www.google.com.au/search?q=90...nspecinc.co m - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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#11
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
On Wed, 28 Nov 2012 05:35:48 -0500, "Wild_Bill"
put finger to keyboard and composed: I've posted several pics of the VRD-MC5 circuit board with brief descriptions in a Flickr set. http://www.flickr.com/photos/5234515...389280/detail/ I believe U15 is the 2.5V regulator for the SDRAM. G950T65, Global Mixed-mode Technology, 2.5V 1A Regulator: http://www.gmt.com.tw/product/datasheet/EDS-950.pdf G2996, Global Mixed-mode Technology, DDR I/II Termination Regulator: http://www.gmt.com.tw/product/datasheet/EDS-2996.pdf BTW, T3 looks more like a common mode line filter rather than a dual 3A fuse. The logo appears to belong to TDK. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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#12
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
On Thu, 29 Nov 2012 21:10:26 +1100, Franc Zabkar
put finger to keyboard and composed: G2996, Global Mixed-mode Technology, DDR I/II Termination Regulator: http://www.gmt.com.tw/product/datasheet/EDS-2996.pdf This device appears to be responsible for the 1.25V supply. It has a shutdown pin (SD). It might be an idea to see where this pin goes. I suspect it will go to the same chip as the enable pins for the 3.3V and 1.8V supplies. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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#13
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
Wild_Bill wrote in message
... I haven't found any info regarding repair of these DVDirect recorders, and was wondering if anyone had accomplished any repairs. http://store.sony.com/p/VRD-MC5/en/p/VRDMC5 The production date is 2007. These Sony VRD DVDirect recorders record to DVD from sources of composite or S-video, digital video/firewire, and memory cards.. or directly from some models of Handycams. The unit appears to be dead, except that the "power on" LED turns on when the Power button is pressed (but doesn't turn off when pressed again). No display on the LCD, no drawer extend when Eject is pressed and no other LEDs are illuminated (there are several mounted directly to the board for diagnostic purposes, presumably). The circuit board is marked with some voltage test points, and the only voltages which are present are 12V (input voltage) and 5V. Missing are 3.3, 1.8 and 1.25V, however I'm not certain that all of these are standby voltages. I've only seen and checked 1 fuse (a dual 3A device) and there doesn't appear to be any others. Any info related to the missing voltages and functions would be very much appreciated. -- Cheers, WB ............. Before getting bogged-down in hardware fault scenarios, did someone try de-zoning it , via firmware upload? |
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#14
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER REVISITED
On 11/25/2012 5:40 PM, Wild_Bill wrote:
After spending some time checking various other marked test points to make some notes, also checked the ESR of the aluminum electrolytic surface-mount caps (absolutely fantastic tool.. thanks, Bob Parker). Out of the 8 caps marked 10uF 16V, 5 of 'em had ESR readings of 9 or 10 ohms. The larger value caps (100uf, 220uf 16V) had reasonable ESR readings. One of the larger caps(?) is clearly marked 220C UD.. I dunno what that's supposed to mean, but it looks identical to the other 220uF caps, including the black semicircle for the negative terminal. Anyone familiar with these markings? I'll see if I can get some replacement caps, and report back with any changes. Before you spend a lot of effort finding and replacing caps, I suggest you bridge the suspected caps with standard leaded caps and see if the system can be revived. Consider this scenario. You have a buck converter that converts 20V down to 5V. As the caps age and increase in ESR and/or decrease in value, ripple starts to appear. The end-stage is an open cap and 20V spikes with 25% duty factor. The average value is still 5V cuz the regulator probably tries to average it. And that might still be what you read on your voltmeter, depending on its topology. Problem is that the 20V killed the IC's some time ago. No amount of cap replacing will fix that. -- Cheers, WB ............. "Wild_Bill" wrote in message ... The unit appears to be dead The circuit board is marked with some voltage test points, and the only voltages which are present are 12V (input voltage) and 5V. Missing are 3.3, 1.8 and 1.25V, however I'm not certain that all of these are standby voltages. Cheers, WB ............. |
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#15
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER REVISITED
Thanks Mike, I agree with the scenario you presented as being a
possibility.. so troubleshooting with an oscilloscope would likely be much more revealing. I was expecting to get lucky since the unit is nearly completely dead, but that seems less likely now. -- Cheers, WB .............. "mike" wrote in message ... Before you spend a lot of effort finding and replacing caps, I suggest you bridge the suspected caps with standard leaded caps and see if the system can be revived. Consider this scenario. You have a buck converter that converts 20V down to 5V. As the caps age and increase in ESR and/or decrease in value, ripple starts to appear. The end-stage is an open cap and 20V spikes with 25% duty factor. The average value is still 5V cuz the regulator probably tries to average it. And that might still be what you read on your voltmeter, depending on its topology. Problem is that the 20V killed the IC's some time ago. No amount of cap replacing will fix that. |
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#16
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
You've delivered a great amount of information Franc.. thanks for your
efforts. So why are the switches on the main board on not on the display PCB? There is only the one board in the VRD-MC5. Not included in the pics, but the LCD display flex cable connects to the slim brown connector in the upper left sector (below the coil marked 820 of pic VRD-MC5e). The 4 switches (north, south, east, west) around a centered switch are for navigating the displays' menu selections. I wanted one of these units to use for transferring my body-worn DVR and camera images directly to DVD without needing a computer. I received a previous model of this unit this week, the previous years' VRD-MC1. The MC1 has a smaller LCD, and the board is vaguely similar to the MC5. The MC1 uses a conventional ATAPI DVD drive (the MC5 uses a different type with only 2 flex cables), so if the drive fails, it may be possible to swap it out. -- Cheers, WB .............. "Franc Zabkar" wrote in message ... For those that wish to avoid a click-fest, here are your hires photos: http://farm9.staticflickr.com/8339/8...97c72ff6_k.jpg http://farm9.staticflickr.com/8069/8...e168394c_k.jpg http://farm9.staticflickr.com/8201/8...d5ddcf70_k.jpg http://farm9.staticflickr.com/8482/8...385404db_k.jpg http://farm9.staticflickr.com/8197/8...53d08a78_k.jpg http://farm9.staticflickr.com/8067/8...585756fb_k.jpg http://farm9.staticflickr.com/8489/8...b7e45142_k.jpg http://farm9.staticflickr.com/8208/8...73232b3b_k.jpg http://farm9.staticflickr.com/8198/8...de961f4d_k.jpg I couldn't find any data on the Mediatek MT1888E DSP/RF or MT8108ADE, but the following service manual has some useful circuit diagrams: Daewoo DVD Recorder Service Manual (models DW-K3AD2N-DS, DW-K3BD2N-DS, DW-R631/DW-R632): http://www.daewoo.cl/sta-info/manuals/vidvd/DW-R631.pdf The above unit contains a Mediatek MT1888E DSP/RF and MT8105B MPEG codec. I suspect that the MT8105B might be functionally similar to the MT8108ADE (or MT8108BDE), but that's only a guess. Both chips require +3.3V and +1.8V supplies. The board has a ISL6227CAZ dual PWM controller adjacent to the 3.3V and 1.8V test points, so I suspect that this IC is responsible for these two supplies. Each PWM controller has its own enable pin, so I would check these. There is also a MOSFET (RSS040P03) near the DC power socket which appears to function as a high-side power switch. I would confirm that it is switching +12V. The AT1796-50A part appears to be responsible for the +5V supply. The switches are a bit of an enigma. I would have expected that there would be a microcontroller associated with the display, and that this would be responsible for waking the board from standby. So why are the switches on the main board on not on the display PCB? AFAICS, neither the MT1888E nor the MT8108ADE could be controlling the dual PWM controller IC (since they are both dependent on the supplies from this IC). Alternatively, could the power button be connected to some simple latch logic? Here are some datasheets that may be helpful: AT1796-50A, Aimtron, 150kHz, 3A Step-Down Switching Regulator: http://www.electro-tech-online.com/c...-50_488409.pdf ISL6227CAZ, Intersil, Dual Mobile-Friendly PWM Controller with DDR Option: http://www.intersil.com/content/dam/...n90/fn9094.pdf RSS040P03, Rohm, P-channel MOSFET, -30V, -4A: http://doc.chipfind.ru/pdf/rohm/rss040p03.pdf 90C46D, OnSpec, ATA/ ATAPI Host to Flash Media R/W Controller: http://www.onspecinc.com/90C46DMoreInfo/90C46D_Desc.htm http://www.onspecinc.com/90C46DMoreI...46D_REV0_9.pdf http://www.google.com.au/search?q=90...nspecinc.co m - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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#17
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
I should'a looked at the board designation, but I was expecting to see a
fuse, and when it was marked with 3A and some other numbers, I "saw" a fuse. Good catch Franc. -- Cheers, WB .............. "Franc Zabkar" wrote in message ... On Wed, 28 Nov 2012 05:35:48 -0500, "Wild_Bill" put finger to keyboard and composed: I believe U15 is the 2.5V regulator for the SDRAM. G950T65, Global Mixed-mode Technology, 2.5V 1A Regulator: http://www.gmt.com.tw/product/datasheet/EDS-950.pdf G2996, Global Mixed-mode Technology, DDR I/II Termination Regulator: http://www.gmt.com.tw/product/datasheet/EDS-2996.pdf BTW, T3 looks more like a common mode line filter rather than a dual 3A fuse. The logo appears to belong to TDK. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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#18
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
Certainly a possibility Nigel.. there are firmware updates for these units,
although I don't have any experience with failed updates so I don't know what the corruption results would appear as. This unit was a used, as-is item, so its history is unknown, although it was easy to determine that someone had previously disassembled it.. broken flex connector, missing drive drawer faceplate and other signs. -- Cheers, WB .............. "N_Cook" wrote in message ... Before getting bogged-down in hardware fault scenarios, did someone try de-zoning it , via firmware upload? |
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#19
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SONY VRD MC5 DVDIRECT DVD BURNER RECORDER
Wild_Bill wrote in message
... Certainly a possibility Nigel.. there are firmware updates for these units, although I don't have any experience with failed updates so I don't know what the corruption results would appear as. This unit was a used, as-is item, so its history is unknown, although it was easy to determine that someone had previously disassembled it.. broken flex connector, missing drive drawer faceplate and other signs. -- Cheers, WB ............. "N_Cook" wrote in message ... Before getting bogged-down in hardware fault scenarios, did someone try de-zoning it , via firmware upload? As a favour to a good customer I said I'd look at his non working DVD and went down much the same path as you are. The next day he said , oh by the way it stopped working after I borrowed a de-zoning disk. If anyone knows a signature to look out for , characteristic of this soft/firmware condition as distinct from hardware failure? |
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Linear Mode
