Sharp DV-3770H


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Sharp DV-3770H

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BiggishFish
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Jul 29, 2007, 8:59 PM

Post #1 of 3 (872 views)
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Sharp DV-3770H	Can't Post

The TV must be 13-14 years old, and has been perfect until this morning.

There is a constant high-pitched whine - not from the speaker but from the TV itself, and the picture is distorted (vertical lines appear wavy) which gets significantly worse towards the left hand side.

I've given it a quick visual check for burnt out components, and I found a schematic on the web, but it's such poor quality that it's pretty much unreadable. :(

Any ideas?
Thanks

(This post was edited by BiggishFish on Jul 29, 2007, 9:12 PM)

techchris
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Jul 29, 2007, 9:17 PM

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Re: [BiggishFish] Sharp DV-3770H [In reply to]	Can't Post

look for bulging or dried up electrolytic caps in the horizontal oscillator or power supply sections and replace

BiggishFish
New User

Jul 30, 2007, 7:00 PM

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Re: [techchris] Sharp DV-3770H [In reply to]	Can't Post

Found a bulging cap, which looks easy enough to change.

A google search for the model and the cap number from the board brings up a page describing the exact symptoms, so it looks like mystery solved. :)

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