To:?G4NQX post# 21853
I measured the forward voltage drop of the smd dual diode and got 336mV in circuit, then 1n4148 on a strip and got 864mV, finally a 1n60 with 350mV. Which one of these through hole diodes is the better replacement choice? I am thinking about the original design with a trim pot and smd 1n4148's. What was the value of the trimmer? And how to adjust it? Or is it better to string two through hole diodes between the empty smd pads for D15 and D16 and the big hole for the center pin of the trim pot, observing polarity as marked on the board?
After chasing the white rabbit this far down the hole, I have become cautious and hesitant. It sounds like we're almost there on this.
