Question about Toshiba 57H81 57" Rear Projection Television

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Wavey picture my set takes some time to "warm up". when I turn it on you cannot make out the picture at all but after a few minutes it clears up. The whole picture seems to have little wavey lines or twitching of the picture. what can I do? I was an AT in the Navy so I can fix it myself if I know what to fix or replace. thank you for your help

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  • sbell74 May 20, 2008

    how much do you think this problem would cost to fix it

  • ibleedbloo Jun 01, 2008

    Same problem here. Any recommendations on who to call?

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Zebra19. This problem is a common occurance in these sets. So common that there is a service bulliteen to service centers on it. Fixing it is not easy though. It ivolves 11 very very small micro capacitors. on what is known as the hypermodule. In an ideal world replacing the hypermodule is the best course of action. but.. these are almost impossible to find. if you are very good at soldering and have a lighted magnifer and very small twezzers it can be fixed. but if you damage the board....... i have done this repair about 6 times.. replacing them is what need to happen. 11 10 microfard surface capswavey picture - caae315.jpg this is the hypermodule ... it is a board in a sheilded can that plugs in behind the input termals in the back. kind hard to get too. the caps are the small circular components that you see with the red and black marks on it.
willie at fordtv.com

Posted on May 20, 2008

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When a problem takes a while to show up, it's usually a thermal issue with some component or solder connections. (The same thing can also happen in reverse; something doesn't work right when you turn the set on but clears up with time.)

Unfortunately, there are several areas where problems can cause the symptoms you describe, so I can't suggest a specific part. But the most likely areas would be the tuner (if you're connected to an antenna or other signal source using the antenna connector), or video processing IC and surrounding components. The tuners in many RCA sets were well known for developing cracks in the soldering from the circuit board to the shield can, and this would cause lines or total signal loss as the set warmed up.

To help find what's causing this, you can use a non-metal item (I use a bamboo chopstick from my favorite restaurant) to tap around suspect areas to see if it's a connection problem. Spray cans of cooler are also available to chill down parts after the problem starts to see what might be at fault. When you get the right part or area with the spray you can see the effect on the screen.

You might want to see what a service technician would charge to check the set and give a repair estimate. If you're happy with the performance and the cost is reasonable, repairing this set might be economical. It usually isn't for small sets, but large screens are still a few hundred dollars.

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