Question about Sharp 27DV-S100 27 in. TV/VCR/DVD Combo

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Picture break up

When I turn the volume up the picture starts to break up like some sort of interference, when I lower the sound it goes away

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Re: Picture break up

My first gut tells me that this is a power supply problem. The power supply runs out of capacity due to the increased load of the audio amp. Possible problems might be power supply capacitors have changed their value (lowered), if it has a linear power supply, the full wave bridge (that converts AC to DC)might have a bad diode, if it is a switching power supply one or more of the output capacitors may actually be open. Another possible problem is a cold solder joint. Does the picture breakup occur when the case is slapped? This could indicate a mechanical failure (like a solder joint). Is this the only symptom that this set has?

Posted on Aug 13, 2007

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