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In Reply to: Antique Soundlab posted by lpmoss on April 9, 2014 at 12:16:23:
...and photos online of the 1003, here is what I think you need to do:
Choose VB1 on the rotary switch. Put (actually I think the red meter lead) into the socket hole on the far right. The black lead goes onto the chassis, as ground (I just use the top of one of the chassis screws). Adjust the bias in the first hole on the left with a screwdriver. That is likely to be VB1. Switch rotary to VB2, and move to second pot from left, etc.
No idea what the bias setting should be...hopefully that is in the manual!
I am 98% sure this method will work, good luck!
Steve
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