Question about Insignia IS-LCDTV32 32 in. Television
I would be naturally curious of the no sound symptom but the no blue light makes this puzzle even more of a challenge.
This unit has some VERY poor power supplies in them, in particular three caps E919,E920 & E921 (680uf/35v) usually fail causing a complete dead condition. But there are also a total of 16 caps in various areas of the supply handling low voltage sources for various other areas of the TV and it would be my suspicion that one or more of those has failed and you might not be too far from a complete failure of the supply when the main three 680uf caps finally short. At least I'd start there...
One other thing has me suspecting the supply. Both the blue light and the audio circuit depend of the +12v source. It's the first area of the supply I'd begin with in a trace.
Hope this helps.
Posted on Apr 30, 2008
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