Question about Polaroid TBX-2000AF 20 in. TV/VCR/DVD Combo
I would first see if the audio output stage is functioning properly. I would do this by plugging into the audio output RCA jacks with an audio amplifier and seeing if the audio is breaking up there if not the problem is in the stages after the jack tap off point if the problem is still present in the RCA jacks then the problem is before the RCA jacks. Now I would also take voltage readings of the audio output IC chips this includes bias voltages and the output signal voltages. of the input and the output of the chips (in case of stereo). This will tell you if you need to replace the audio ICs or not. Now what could be happening is that the audio control circuit could be at fault for this you will have to check the voltages on the command processor. There is no simple way to repair this problem, which does not involve opening it up. However there is a way to bypas, and I mean bypass the problem "THIS IS NOT A FIX" If the audio out of the RCA jacks is not effected you could plug an audio amplifier into them (Left and Right Stereo) and use the amplifier as your audio output. This is not a good practice, but it will get you by. I would suggest getting the set fixed though.
Posted on Sep 18, 2007
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