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Posted by bob harvey on March 26, 2004 at 10:47:01:
I have a sansui 1000A that works fine except the fm stereo multiplex, which is barely audible. The regular fm works fine. Signal strength is good on fm. The stereo indicator lights when the unit is turned on but goes out as soon as the tubes heat up. I have tested and swapped out all of the fm tubes including the nuvistors. I have checked the circuit bd in the multiplex circuit and swapped out all 3 of those tubes. Does anyone have a lead on this. Thanx. Bob