Question about Hitachi 57F500 57" Rear Projection HDTV-Ready Television
I've owned this tv for about 5 years now and it's been fine until now. the top and bottom of the screen are curving in & the sides keep fluxuating. i've gone into "magic focus" in manual mode and the graph is also curved and fluxuating. HELP!
The problem you are having is the most common failure in just about all projection TVs, the convergance amplifier ICs have failed and need to be replaced. your set uses the STK-392-110 or STK392-150 amplifiers. there may also be some support resistors and fuses to replace also. these amps work very hard to keep the lines together they have very large heat sinks to keep them cool but they will fail in time.
Posted on Jan 06, 2008
Your set have bad convergence chips in it. There are 2 of the same type of chips in the convergence board and if 1 is bad, change both of them and be safe as to not have to work on the set twice. These chips range from about 20 dollars each to 80+ dollars each, but I'de think yours would be in the 50 dollar range. So if you can fix the problem yourself, you should be able to get by with about a hundred bucks. Good Luck and I hope this has helped.
Posted on Jan 06, 2008
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Posted on Jan 02, 2017
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