I have a Toshiba 42HDX82 projection HDTV. I have the problem where I get a wavy picture upon start up and takes about 20 minutes to go away. In a solution response, willtab mentions that 10 caps need to be replaced to fix this. Can you tell me what the reference designators are and the capcitor values? Thanks.
SOURCE: Toshiba - 50H13 Projection TV
There is a large metal case behind the input board in the back of the set called the hyper board that needs to be replaced.Good Luck
SOURCE: Toshiba 50H82 with wavy lines at the top when in HD mode
Found this person on eBay who repairs the hyperboard for $75 quickly with very positive feedback.
http://myworld.ebay.com/kcarrigan/
I have the same problem and will probably send mine after the holidays.
SOURCE: Mitsubishi 55" Projection TV / Horizontal Wavy Lines at Start Up
this is very common with these sets. the fix is to replace 11 very very smal capacitor on what is known as the hypermodule. The ideal sitation is to replace the hypermodule. if you can find it. I can do this repair. I have done about 10 at the shop. if you need to i would suggest finding someone who is very experence in surface mounted repair
SOURCE: When I turn on my 50H82 it takes 10 to 15 minutes
I just did a repair on one of these. Check your picture-on-picture. If the the secondary picture is clear, chances are very good the problem is on the "hyper board". We d not replace the hyper board - we repair it. The board is very expensive and rarely, if ever, available. There are several parts in the module that need replaced, but these are definitely not user replaceable. They are very small surface mount components and even I have lifted a copper or trace or two doing these. It is tedious work but our repair bill was well below $300. It is also something I do not do in the home and taking it to the repair facility is a money saver. I did go to the home on this one and remove the board to the shop, however they only lived a few miles away so the service call was low priced. Hope this helps...
SOURCE: slight convergence problem after changing convergence circuits
My experience has been that the resistors have fallen out of range. These aren't expensive and neither are the caps that surround this area. If you're pulling the board out to change the resistors, might as well change the caps, too. If you're strapped for cash, but have a multi-meter, you can test the caps and the resistors after they've been taken out of circuit to save a little green. Let me know if you need any help testing them; I'd be glad to help.
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If you tell me the chassis no for that TV I will try to find the schematics for you. Post a comment back here.
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