Re: No LW/MW receive - Sony ST-S311
Well, new IC arrived and was installed. Receiver worked! Clean 1kHz audio out from the detector, good waveforms on the IF, etc, display indicating signal meter bars full and 'tuned' indication.
Then a few minutes later, it died again! For a while I was getting something like the right scope waveforms on most pins, but now im back to the same horrid distorted traces as before.
Im at a loss! The supply voltages are good and within the chips spec, theres no obvious overheating, and a good going over anyway with freeze spray showed no changes.
What could slowly kill a chip other than heat?
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