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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Pioneer rear projection convergence
I posted this to the home theater group too, but thought here might
also be worth a shot. I have a Pioneer SD-P5183 rear projection TV that doesn't work properly after moving house. The red gun is way out of convergence on the bottom 3 cross hairs. The top and middle 3 are fine and the blue and green guns are fine across all 9 points. The convergence control on the remote doesn't seem to help. I took the back and the screen off the set hoping to find some manual adjustment controls, but can't find anything. The red gun is probably a good 1.5" too high. The mirror looks to be in place and all 3 colours are in focus. Can anyone offer any advice? J. |
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Pioneer rear projection convergence
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#3
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Pioneer rear projection convergence
Bad output and probably poor spolder connections on the registration circuit
pcb/ "Jens Ratsey" wrote in message om... I posted this to the home theater group too, but thought here might also be worth a shot. I have a Pioneer SD-P5183 rear projection TV that doesn't work properly after moving house. The red gun is way out of convergence on the bottom 3 cross hairs. The top and middle 3 are fine and the blue and green guns are fine across all 9 points. The convergence control on the remote doesn't seem to help. I took the back and the screen off the set hoping to find some manual adjustment controls, but can't find anything. The red gun is probably a good 1.5" too high. The mirror looks to be in place and all 3 colours are in focus. Can anyone offer any advice? J. |
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Pioneer rear projection convergence
Replace STK4277SL on convergence panel. Resolder all bad connections on
convergence assembly and power/deflection board. Then you will be good to go! -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 "Jens Ratsey" wrote in message om... I posted this to the home theater group too, but thought here might also be worth a shot. I have a Pioneer SD-P5183 rear projection TV that doesn't work properly after moving house. The red gun is way out of convergence on the bottom 3 cross hairs. The top and middle 3 are fine and the blue and green guns are fine across all 9 points. The convergence control on the remote doesn't seem to help. I took the back and the screen off the set hoping to find some manual adjustment controls, but can't find anything. The red gun is probably a good 1.5" too high. The mirror looks to be in place and all 3 colours are in focus. Can anyone offer any advice? J. |
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Pioneer rear projection convergence
"Ampdoc" wrote in message ...
Replace STK4277SL on convergence panel. Resolder all bad connections on convergence assembly and power/deflection board. Then you will be good to go! -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 Thanks for the replies. I just called a local repair shop and Pioneer dealer. I described the problem and he estimated around $600 in repairs. He said he'd need to take out all the circuits and resolder everything, plus of course come and get the thing. The estimate has put me off that since I intend to replace the set eventually with a low to medium end overhead projector that seem to be around the $1,200 range. It's also no longer my primary set. I'm not a complete moron with a soldering iron and I'd be happy to check the boards myself if it weren't for the nasty voltages in a TV set. Someone suggested getting hold of a service manual - would I be able to do anything myself (remember I'm in NO way qualified as a TV repairman!) and if so, how would I go about getting one? Or is the box just destined for permanent retirement? J. |
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Pioneer rear projection convergence
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Pioneer rear projection convergence
Where are you locatd, if they're getting those rates for a 250-300.00 job I
need to move! Stk4277 should be found for less than $80 and that's if they are marking it up a lot. They shouldn't have to even pick it up to fix that. Check www.pioneerelectronics.com for an ASC in your area. -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 "Jens Ratsey" wrote in message om... "Ampdoc" wrote in message ... Replace STK4277SL on convergence panel. Resolder all bad connections on convergence assembly and power/deflection board. Then you will be good to go! -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 Thanks for the replies. I just called a local repair shop and Pioneer dealer. I described the problem and he estimated around $600 in repairs. He said he'd need to take out all the circuits and resolder everything, plus of course come and get the thing. The estimate has put me off that since I intend to replace the set eventually with a low to medium end overhead projector that seem to be around the $1,200 range. It's also no longer my primary set. I'm not a complete moron with a soldering iron and I'd be happy to check the boards myself if it weren't for the nasty voltages in a TV set. Someone suggested getting hold of a service manual - would I be able to do anything myself (remember I'm in NO way qualified as a TV repairman!) and if so, how would I go about getting one? Or is the box just destined for permanent retirement? J. |
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Pioneer rear projection convergence
I'm on Long Island, NY in the Smithtown vicinity. The place I called was
the first on the ASC list at PioneerElectronics.com. I'll try another one today. If there's anyone in the area who wants to make a quick buck let me know! J. "Ampdoc" wrote in message . .. Where are you locatd, if they're getting those rates for a 250-300.00 job I need to move! Stk4277 should be found for less than $80 and that's if they are marking it up a lot. They shouldn't have to even pick it up to fix that. Check www.pioneerelectronics.com for an ASC in your area. -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 "Jens Ratsey" wrote in message om... "Ampdoc" wrote in message ... Replace STK4277SL on convergence panel. Resolder all bad connections on convergence assembly and power/deflection board. Then you will be good to go! -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 Thanks for the replies. I just called a local repair shop and Pioneer dealer. I described the problem and he estimated around $600 in repairs. He said he'd need to take out all the circuits and resolder everything, plus of course come and get the thing. The estimate has put me off that since I intend to replace the set eventually with a low to medium end overhead projector that seem to be around the $1,200 range. It's also no longer my primary set. I'm not a complete moron with a soldering iron and I'd be happy to check the boards myself if it weren't for the nasty voltages in a TV set. Someone suggested getting hold of a service manual - would I be able to do anything myself (remember I'm in NO way qualified as a TV repairman!) and if so, how would I go about getting one? Or is the box just destined for permanent retirement? J. |
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Pioneer rear projection convergence
Here we go again with rip off repair shops ..
getting the chassis out far enough to get the board out is quite a chore you have to take off alot of wires/plugs . If you can solder `very well` that may be all it needs . It would be hard to get shocked in a big screen tv set doing a convergence board . If you cant try to get help taking it to a reasonable repair shop to avoid their 100$ travel time . |
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Pioneer rear projection convergence
Ken - do you know where I can get hold of a service manual or a diagram of
the internals so I'd at least know which board I was supposed to be looking at? I have the screen and back off the TV and it all looks reasonably easy to get to. Are there any obvious 'don't touch this' items (re voltages)? J. "Ken G." wrote in message ... Here we go again with rip off repair shops .. getting the chassis out far enough to get the board out is quite a chore you have to take off alot of wires/plugs . If you can solder `very well` that may be all it needs . It would be hard to get shocked in a big screen tv set doing a convergence board . If you cant try to get help taking it to a reasonable repair shop to avoid their 100$ travel time . |
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Pioneer rear projection convergence
Here we go again with rip off repair shops ..
getting the chassis out far enough to get the board out is quite a chore you have to take off alot of wires/plugs . If you can solder `very well` that may be all it needs . It would be hard to get shocked in a big screen tv set doing a convergence board . If you cant try to get help taking it to a reasonable repair shop to avoid their 100$ travel time . |
#12
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Pioneer rear projection convergence
You can get the manual at:
http://parts.pioneerelectronics.com/...uctNum=ARP2880 But you really don't need it for this, put the back back on, remove the speaker grille, remove 6 screws securing the cover underneath the grille, you will find the convergence PCB attached to that panel. Be certain to mark the wires when you unplug the panel as on some sets Pioneer did not color-code the plug and socket, make sure you reconnect them correctly. The STK is underneath the large heatsink, remove the PCB from the holder, desolder the STK leads, and then desolder the screw holding the heatsink, remove the 2 screws then heatsink & IC simultaneously, and replace with new STK! As to the other shop's estimate, it is possible you were being quoted for replacement of the entire convergence assembly, whitch is $226.00 Plus S&H, and return shipping for the core. If the board is replaced a set-up would need to be done, but if you only replace the IC 99% of the time you will be well within factory specifications and only need minor adjustments in the user menu. Some shops never learn to go to component level as Pioneer's warranty policy is board replacement. -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 "Jens Ratsey-Woodroffe" wrote in message et... Ken - do you know where I can get hold of a service manual or a diagram of the internals so I'd at least know which board I was supposed to be looking at? I have the screen and back off the TV and it all looks reasonably easy to get to. Are there any obvious 'don't touch this' items (re voltages)? J. "Ken G." wrote in message ... Here we go again with rip off repair shops .. getting the chassis out far enough to get the board out is quite a chore you have to take off alot of wires/plugs . If you can solder `very well` that may be all it needs . It would be hard to get shocked in a big screen tv set doing a convergence board . If you cant try to get help taking it to a reasonable repair shop to avoid their 100$ travel time . |
#13
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Pioneer rear projection convergence
Thanks Jammy - that was exactly what I was hoping for. I'll take another
look at the box later today and let you know how I get on removing the IC. J. "Ampdoc" wrote in message .. . You can get the manual at: http://parts.pioneerelectronics.com/...uctNum=ARP2880 But you really don't need it for this, put the back back on, remove the speaker grille, remove 6 screws securing the cover underneath the grille, you will find the convergence PCB attached to that panel. Be certain to mark the wires when you unplug the panel as on some sets Pioneer did not color-code the plug and socket, make sure you reconnect them correctly. The STK is underneath the large heatsink, remove the PCB from the holder, desolder the STK leads, and then desolder the screw holding the heatsink, remove the 2 screws then heatsink & IC simultaneously, and replace with new STK! As to the other shop's estimate, it is possible you were being quoted for replacement of the entire convergence assembly, whitch is $226.00 Plus S&H, and return shipping for the core. If the board is replaced a set-up would need to be done, but if you only replace the IC 99% of the time you will be well within factory specifications and only need minor adjustments in the user menu. Some shops never learn to go to component level as Pioneer's warranty policy is board replacement. -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 "Jens Ratsey-Woodroffe" wrote in message et... Ken - do you know where I can get hold of a service manual or a diagram of the internals so I'd at least know which board I was supposed to be looking at? I have the screen and back off the TV and it all looks reasonably easy to get to. Are there any obvious 'don't touch this' items (re voltages)? J. "Ken G." wrote in message ... Here we go again with rip off repair shops .. getting the chassis out far enough to get the board out is quite a chore you have to take off alot of wires/plugs . If you can solder `very well` that may be all it needs . It would be hard to get shocked in a big screen tv set doing a convergence board . If you cant try to get help taking it to a reasonable repair shop to avoid their 100$ travel time . |
#14
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Pioneer rear projection convergence
Update ... I've got the convergence board out and located the STK. I don't
see any STK 'leads' but I do see where it's soldered to the board. Will have a closer look. But the problem now is where to locate that part! I've searched online and everywhere that has it seems to have a minimum order value in the $350 - $500 range. Do you know where I can order it? J. "Jens Ratsey-Woodroffe" wrote in message t... Thanks Jammy - that was exactly what I was hoping for. I'll take another look at the box later today and let you know how I get on removing the IC. J. "Ampdoc" wrote in message .. . You can get the manual at: http://parts.pioneerelectronics.com/...uctNum=ARP2880 But you really don't need it for this, put the back back on, remove the speaker grille, remove 6 screws securing the cover underneath the grille, you will find the convergence PCB attached to that panel. Be certain to mark the wires when you unplug the panel as on some sets Pioneer did not color-code the plug and socket, make sure you reconnect them correctly. The STK is underneath the large heatsink, remove the PCB from the holder, desolder the STK leads, and then desolder the screw holding the heatsink, remove the 2 screws then heatsink & IC simultaneously, and replace with new STK! As to the other shop's estimate, it is possible you were being quoted for replacement of the entire convergence assembly, whitch is $226.00 Plus S&H, and return shipping for the core. If the board is replaced a set-up would need to be done, but if you only replace the IC 99% of the time you will be well within factory specifications and only need minor adjustments in the user menu. Some shops never learn to go to component level as Pioneer's warranty policy is board replacement. -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 "Jens Ratsey-Woodroffe" wrote in message et... Ken - do you know where I can get hold of a service manual or a diagram of the internals so I'd at least know which board I was supposed to be looking at? I have the screen and back off the TV and it all looks reasonably easy to get to. Are there any obvious 'don't touch this' items (re voltages)? J. "Ken G." wrote in message ... Here we go again with rip off repair shops .. getting the chassis out far enough to get the board out is quite a chore you have to take off alot of wires/plugs . If you can solder `very well` that may be all it needs . It would be hard to get shocked in a big screen tv set doing a convergence board .. If you cant try to get help taking it to a reasonable repair shop to avoid their 100$ travel time . |
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Pioneer rear projection convergence
Duh! I take it by leads you mean the 'feet' off the STK? Yep, found those.
;-) "Jens Ratsey-Woodroffe" wrote in message et... Update ... I've got the convergence board out and located the STK. I don't see any STK 'leads' but I do see where it's soldered to the board. Will have a closer look. But the problem now is where to locate that part! I've searched online and everywhere that has it seems to have a minimum order value in the $350 - $500 range. Do you know where I can order it? J. "Jens Ratsey-Woodroffe" wrote in message t... Thanks Jammy - that was exactly what I was hoping for. I'll take another look at the box later today and let you know how I get on removing the IC. J. "Ampdoc" wrote in message .. . You can get the manual at: http://parts.pioneerelectronics.com/...uctNum=ARP2880 But you really don't need it for this, put the back back on, remove the speaker grille, remove 6 screws securing the cover underneath the grille, you will find the convergence PCB attached to that panel. Be certain to mark the wires when you unplug the panel as on some sets Pioneer did not color-code the plug and socket, make sure you reconnect them correctly. The STK is underneath the large heatsink, remove the PCB from the holder, desolder the STK leads, and then desolder the screw holding the heatsink, remove the 2 screws then heatsink & IC simultaneously, and replace with new STK! As to the other shop's estimate, it is possible you were being quoted for replacement of the entire convergence assembly, whitch is $226.00 Plus S&H, and return shipping for the core. If the board is replaced a set-up would need to be done, but if you only replace the IC 99% of the time you will be well within factory specifications and only need minor adjustments in the user menu. Some shops never learn to go to component level as Pioneer's warranty policy is board replacement. -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 "Jens Ratsey-Woodroffe" wrote in message et... Ken - do you know where I can get hold of a service manual or a diagram of the internals so I'd at least know which board I was supposed to be looking at? I have the screen and back off the TV and it all looks reasonably easy to get to. Are there any obvious 'don't touch this' items (re voltages)? J. "Ken G." wrote in message ... Here we go again with rip off repair shops .. getting the chassis out far enough to get the board out is quite a chore you have to take off alot of wires/plugs . If you can solder `very well` that may be all it needs . It would be hard to get shocked in a big screen tv set doing a convergence board . If you cant try to get help taking it to a reasonable repair shop to avoid their 100$ travel time . |
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Pioneer rear projection convergence
But the problem now is where to locate that part! I've searched online and everywhere that has it seems to have a minimum order value in the $350 - $500 range. Do you know where I can order it? Check out Tritronics: http://www.tritronicsinc.com/index.html Alan Harriman |
#17
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Pioneer rear projection convergence
Here's the substitute from Pioneer:
http://parts.pioneerelectronics.com/...m=STK4279%2DSL -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 "Jens Ratsey-Woodroffe" wrote in message et... Duh! I take it by leads you mean the 'feet' off the STK? Yep, found those. ;-) "Jens Ratsey-Woodroffe" wrote in message et... Update ... I've got the convergence board out and located the STK. I don't see any STK 'leads' but I do see where it's soldered to the board. Will have a closer look. But the problem now is where to locate that part! I've searched online and everywhere that has it seems to have a minimum order value in the $350 - $500 range. Do you know where I can order it? J. "Jens Ratsey-Woodroffe" wrote in message t... Thanks Jammy - that was exactly what I was hoping for. I'll take another look at the box later today and let you know how I get on removing the IC. J. "Ampdoc" wrote in message .. . You can get the manual at: http://parts.pioneerelectronics.com/...uctNum=ARP2880 But you really don't need it for this, put the back back on, remove the speaker grille, remove 6 screws securing the cover underneath the grille, you will find the convergence PCB attached to that panel. Be certain to mark the wires when you unplug the panel as on some sets Pioneer did not color-code the plug and socket, make sure you reconnect them correctly. The STK is underneath the large heatsink, remove the PCB from the holder, desolder the STK leads, and then desolder the screw holding the heatsink, remove the 2 screws then heatsink & IC simultaneously, and replace with new STK! As to the other shop's estimate, it is possible you were being quoted for replacement of the entire convergence assembly, whitch is $226.00 Plus S&H, and return shipping for the core. If the board is replaced a set-up would need to be done, but if you only replace the IC 99% of the time you will be well within factory specifications and only need minor adjustments in the user menu. Some shops never learn to go to component level as Pioneer's warranty policy is board replacement. -- Jammy Harbin J & J Electronics, Inc. 227 S. 4th St. Selmer, TN 38375 731-645-3311 "Jens Ratsey-Woodroffe" wrote in message et... Ken - do you know where I can get hold of a service manual or a diagram of the internals so I'd at least know which board I was supposed to be looking at? I have the screen and back off the TV and it all looks reasonably easy to get to. Are there any obvious 'don't touch this' items (re voltages)? J. "Ken G." wrote in message ... Here we go again with rip off repair shops .. getting the chassis out far enough to get the board out is quite a chore you have to take off alot of wires/plugs . If you can solder `very well` that may be all it needs . It would be hard to get shocked in a big screen tv set doing a convergence board . If you cant try to get help taking it to a reasonable repair shop to avoid their 100$ travel time . |
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Pioneer rear projection convergence
Thanks Alan - part ordered! A little more than the Pioneer site that Jammy
mentioned but I'd already ordered it when his post showed. Be sure to check back here in a week or so after I've installed and and start asking ... "Now what?" ;-) "Alan Harriman" wrote in message ... But the problem now is where to locate that part! I've searched online and everywhere that has it seems to have a minimum order value in the $350 - $500 range. Do you know where I can order it? Check out Tritronics: http://www.tritronicsinc.com/index.html Alan Harriman |
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