Re: Bush DAC 90A Conversion
In answer to your questions:
1. I bridged the cathode bypass cap with 2.2uF - no effect.
2. The BT unit is connected between the volume input and chassis, but the stray signal is there even with the BT disconnected from circuit.
3. I have not modified the ground end of the pot. I take the point that there could be an issue with the power supply negative, but I refer back to item 2 - the signal exists without the BT in circuit - and to my previous post regarding checking an unrestored 90A - it has the same signal issue with the volume input disconnected.
regards
Charles
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