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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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#1
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CRT Repair
OK, it might not make sense, but I really want to fix this NEC
Multisync FE21111SB - but I don't really want to ship it to NEC's place in Ohio and back. Maybe someone here has some experience with this kind of malfunction. It started about a year ago (the unit is now 4 years old). When I would first turn it on, it would flicker and for a few seconds the top half of the screen was focused on a bright horizontal beam in about the middle of the screen - the bottom half would be normal, but, after a few seconds of flickering like this, the screen would "pop out", meaning, it would fill the display area and all was fine. Then it started taking more than a few seoonds, but, it would eventually pop out and be just fine. Now it is stuck in the broken state - the whole top half of the picture is squeezed into a bright horizontal beam running from left to right in the center of the screen - the bottom half is normal. It is like the electronic beam will not sweep the top half of the display area, but just sweeps across a small area in the center of the screen - and then, it goes ahead and finishes out the sweep of the bottom half normally. Why do I want to fix it? It is still the very best picture of ANY of the monitors I have looked at (including LCD's, plasmas, and DLP's). Combined with the ATI TVWonder card, it makes the very best viewing of standard definition TV I have ever seen anywhere. The colors and shades (especially the dark grays and near blacks) are superior to anything else I have seen, and I am willing to pursue fixing it, provided it isn't going to mean a whole new picture tube or anything MAJOR like that. What does tha failure of the top half of the electronic beam sweep usually mean? Or are there many possible causes for this malfunction? Help. Anyone knowledgealbe about this? |
#2
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CRT Repair
James Sweet wrote:
You've got a cracked solder joint on the deflection board, usually right around the vertical output IC. It's a pretty quick and easy repair, the hardest part by far is getting the thing apart and then putting it all back together when you finish. May even be the vertical output IC itself. They get pretty hot and manufacurers tend to save on cooling area. Assembling IC and heat sink requires some care, too. I'd check the electrolytics around this IC as well. Regards, H. |
#3
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CRT Repair
I am having very bad luck. The place I bought it at (Fry's, in
Dallas) suggests that it is not feasable to repair the unit - they want money up front and advise me that it might take several months before they could return it (they have to ship it to California). NEC/ Mitsubishi is having a hard time finding out what the part, or parts, cost (the deflector board and/or the vertical output IC). They say the parts list has no entries that sound like either the "deflectyor board" or the "veritcal output IC", and, they can't give out prices even if they could identify the part. They say they have only two places where it could be repaired (Cincinnati and California), and that I have to put a bunch of money up front and pay shipping both ways - no guarantees. I have called couple of shops here locally in the DFW area but they do not return my calls. This is very sad. The picture tube on this outstanding 21" CRT is still in tip-top shape, and it looks better than anything else I see these days. If anyone knows someone in the Dallas/Fort Worth area that knows how to go inside this unit and maybe even fix it, please respond. The folks at NEC also said that they WILL NOT sell any parts to anybody except those two places in Ohio and California. It looks like I might be out of luck. What a bumer - only 4 years and this really great monitor becomes a boat anchor. This is making me sick. I am not good with a soldering iron (all my previous projects got bungled up good), and I really don't trust myself to take the cover off. Sad tale. |
#4
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CRT Repair
"surface9" wrote in message oups.com... If anyone knows someone in the Dallas/Fort Worth area that knows how to go inside this unit and maybe even fix it, please respond. The folks at NEC also said that they WILL NOT sell any parts to anybody except those two places in Ohio and California. Ask some of the local TV shops. Some guys are smart enough to fault find with no manual. |
#5
Posted to sci.electronics.repair
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CRT Repair
"surface9" wrote in message oups.com... I am having very bad luck. The place I bought it at (Fry's, in Dallas) suggests that it is not feasable to repair the unit - they want money up front and advise me that it might take several months before they could return it (they have to ship it to California). NEC/ Mitsubishi is having a hard time finding out what the part, or parts, cost (the deflector board and/or the vertical output IC). They say the parts list has no entries that sound like either the "deflectyor board" or the "veritcal output IC", and, they can't give out prices even if they could identify the part. They say they have only two places where it could be repaired (Cincinnati and California), and that I have to put a bunch of money up front and pay shipping both ways - no guarantees. I have called couple of shops here locally in the DFW area but they do not return my calls. This is very sad. The picture tube on this outstanding 21" CRT is still in tip-top shape, and it looks better than anything else I see these days. If anyone knows someone in the Dallas/Fort Worth area that knows how to go inside this unit and maybe even fix it, please respond. The folks at NEC also said that they WILL NOT sell any parts to anybody except those two places in Ohio and California. It looks like I might be out of luck. What a bumer - only 4 years and this really great monitor becomes a boat anchor. This is making me sick. I am not good with a soldering iron (all my previous projects got bungled up good), and I really don't trust myself to take the cover off. Sad tale. Frys? Don't even bother with them. Isn't there an independant TV repair shop somewhere in your area? I know they're dropping like flies, but there must be one somewhere. Ok I just did a search on yellowpages.com and it came back with 58 places in the Dallas area, several of those have to be capable of working on CRT displays. The vertical output IC normally costs about 8 bucks and they're usually generic parts available anywhere that sells this stuff, usually just touching up the solder is all it requires, the repair should be under $100 to have professionally done. |
#6
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CRT Repair
"Homer J Simpson" wrote in message news:KrQ2i.20314$g63.8473@edtnps82... "surface9" wrote in message oups.com... If anyone knows someone in the Dallas/Fort Worth area that knows how to go inside this unit and maybe even fix it, please respond. The folks at NEC also said that they WILL NOT sell any parts to anybody except those two places in Ohio and California. Ask some of the local TV shops. Some guys are smart enough to fault find with no manual. Some guys? Any tech worth going to will do the majority of repairs without wasting the time looking for the manual. The more of these you work on, the more they all start to look the same inside. |
#7
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CRT Repair
On 17 May, 00:22, surface9 wrote:
I am having very bad luck. The place I bought it at (Fry's, in Dallas) suggests that it is not feasable to repair the unit - they want money up front and advise me that it might take several months before they could return it (they have to ship it to California). NEC/ Mitsubishi is having a hard time finding out what the part, or parts, cost (the deflector board and/or the vertical output IC). They say the parts list has no entries that sound like either the "deflectyor board" or the "veritcal output IC", and, they can't give out prices even if they could identify the part. They say they have only two places where it could be repaired (Cincinnati and California), and that I have to put a bunch of money up front and pay shipping both ways - no guarantees. I have called couple of shops here locally in the DFW area but they do not return my calls. This is very sad. The picture tube on this outstanding 21" CRT is still in tip-top shape, and it looks better than anything else I see these days. If anyone knows someone in the Dallas/Fort Worth area that knows how to go inside this unit and maybe even fix it, please respond. The folks at NEC also said that they WILL NOT sell any parts to anybody except those two places in Ohio and California. It looks like I might be out of luck. What a bumer - only 4 years and this really great monitor becomes a boat anchor. This is making me sick. I am not good with a soldering iron (all my previous projects got bungled up good), and I really don't trust myself to take the cover off. Sad tale. It seems you've lost your way on this. Ignore the above shops and go to someone competent & willing to repair it. If youve only spoken to 2 shops, try the rest. As has been said, its probably a simple job. More likely to get a good response in person than by phone, and I would certainly suggest avoiding a lot of bs, just describe the fault, offer them x if they can repair it, nothing if they dont, and leave it at that. Re parts, policies vary, but some shops use parts from scrap equipment, so supposedly unobtainable parts are often no such thing. This sort of silliness is precisely why I recommend avoiding authorised service agents outside of guarantee periods. NT |
#8
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CRT Repair
surface9 wrote:
: It looks like I might be out of luck. What a bumer - only 4 years and : this really great monitor becomes a boat anchor. This is making me : sick. I am not good with a soldering iron (all my previous projects : got bungled up good), and I really don't trust myself to take the : cover off. : Sad tale. Not really, monitors like that are just obsolete. I really don't understand why you want to bother getting it fixed, not at all. It took like 15 seconds on dallas.craigslist.org to find this... http://dallas.craigslist.org/sys/314989246.html and there are other 21's on there for $25 also. Don't get me wrong, I still use a Mits 21 (Diamond Plus 200) myself but if this thing ****s out, I'm not even going to bother taking a screwdriver to it. People are dumping those things all over, for $100 which is probably what shipping and the estimate will run you, you can pick up 4 or 5 of them and weed out the best. -bruce |
#9
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CRT Repair
Many of the manufactures are no longer supporting any type of CRT
monitors. Keeping inventory of the parts, and spending the time to troubleshoot and service them is expensive by today's standards. Some of these service centers no longer have any way to properly support CRT type monitors and TV sets. Considering what you have to go through, I would suggest taking the monitor to a local TV service shop. They will most likely be able to service it if the problem is streight forward, and if the parts required are generic types. As for myself, my preference is a good LCD monitor. They do not give off any kind of radiation, have no pin distortions, and have no convergence or purity errors. They take a lot less space in the working area, consume much less electricity, and have zero flicker which causes eyesore. Jerry G. ====== On May 16, 7:22 pm, surface9 wrote: I am having very bad luck. The place I bought it at (Fry's, in Dallas) suggests that it is not feasable to repair the unit - they want money up front and advise me that it might take several months before they could return it (they have to ship it to California). NEC/ Mitsubishi is having a hard time finding out what the part, or parts, cost (the deflector board and/or the vertical output IC). They say the parts list has no entries that sound like either the "deflectyor board" or the "veritcal output IC", and, they can't give out prices even if they could identify the part. They say they have only two places where it could be repaired (Cincinnati and California), and that I have to put a bunch of money up front and pay shipping both ways - no guarantees. I have called couple of shops here locally in the DFW area but they do not return my calls. This is very sad. The picture tube on this outstanding 21" CRT is still in tip-top shape, and it looks better than anything else I see these days. If anyone knows someone in the Dallas/Fort Worth area that knows how to go inside this unit and maybe even fix it, please respond. The folks at NEC also said that they WILL NOT sell any parts to anybody except those two places in Ohio and California. It looks like I might be out of luck. What a bumer - only 4 years and this really great monitor becomes a boat anchor. This is making me sick. I am not good with a soldering iron (all my previous projects got bungled up good), and I really don't trust myself to take the cover off. Sad tale. |
#10
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CRT Repair
Well these posts are encouraging. I'm going to look around here
locally for someone that knows about TV's and see where I can take it and maybe get the soldering done. That would be ideal. NEC finally got back with me and suggested, just as James Sweet said above, that it would probably be a short soldering job. I am now thinking that I will get this fixed sooner or later. But, I had never heard of craigslist. That is a wonderful website. I am stunned to find good 21" crt monitors there for $25 - what a world we live in - these things were around $600 a mere 4 years ago - wow!. They still look better than LCD's for subtle contrasts. I also have a 21.3" Viewsonic LCD which is a great monitor, but, standard TV and photographs look noticebly better on the CRT. Thanks to all. |
#11
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CRT Repair
surface9 wrote:
Well these posts are encouraging. I'm going to look around here locally for someone that knows about TV's and see where I can take it and maybe get the soldering done. That would be ideal. NEC finally got back with me and suggested, just as James Sweet said above, that it would probably be a short soldering job. I am now thinking that I will get this fixed sooner or later. But, I had never heard of craigslist. That is a wonderful website. I am stunned to find good 21" crt monitors there for $25 - what a world we live in - these things were around $600 a mere 4 years ago - wow!. They still look better than LCD's for subtle contrasts. I also have a 21.3" Viewsonic LCD which is a great monitor, but, standard TV and photographs look noticebly better on the CRT. Thanks to all. Is there a local freecycle group? http://www.freecycle.org/ People give away working monitors around here. I've given away several, myself. -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
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