Question about Olevia LT37HVS 37 in. LCD HDTV

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No stable picture, due to power surge.

Power surge caused the picture to shake costantly. Also every now & then the screen show "No signal" & then shake again.

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You have an impending power supply failure.
I would not leave the set on and unattended. There are mulitple protective measures against bursting into flame but I trust none of them completely.

I just answered a few other complaints similar to yours and pasted some of my response below-
-----
I'm afraid you are right suspecting the power supply; most modern sets use switching power supplies and they often fail when the source AC is screwy.
It might not have been the low-normal-low-normal swings but an unseen, short term surge that killed it.
The cycling is occurring to prevent a potential fire or more severe damage; a component has been whacked and the supply is detecting a fault condition, probably excessive current from some circuit.
I'm afraid you are stuck with a repair, if it was mine, I'd look inside first but some basic instruments are needed and technical background.

I highly recommend to homeowners that they install a 'whole house" surge protector. Especially in lightning prone areas.
With installation, around $200-300 US although an intelligent person can do it, it will require shutting down the home.

The surge protectors range from ~$110-200; most have a long warranty and many include insurance to cover items damaged despite the protection.

Posted on Jun 11, 2008

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Sanyo 42


Hi again,

Sorry bout the Live Session.

May I suggest something?
Pls try another signal source other than the indoor antenna such as a DVD or even an old VCR.

It is possible that what you are experiencing is video muting due to dirty antenna signal. If even with a stable known to be good video source (DVD) the problem persist, then it is a matter of checking the voltages as indicated in your service manual.

Hope this be of some help/idea even if the chat did not work out. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

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