Amiga 600 REV1.1 badly Distorted Clipped Saturated audio Repair
The problem is quite simple to find. You have to make some measurements on the LF347 (Op AMP) with the computer running and without sound.
You have to measuring pin 1 and pin 7 and should have a voltage of about 2.5V if the voltage as in my case is of 11.30v and 11.37v. Something is not working.
After replacing the LF347 with a LM324 or better a TL084 the right voltages are back and the sound works again.
Gallery of the repair:
*UPDATE*
After a couple of days, i have realized that the Amiga 600 still had some problems with the sound, although subtle but annoying and after a few measurements i have concluded that the LM324 is not fully compatible and cannot replace the LF324 (at least on the Amiga 600/1200).
After removing the LM324 and replaced with a TL084 everything has started to work much better than before.
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