zeguitartekos Posted September 25, 2023 Share Posted September 25, 2023 Hi, I have a problem in the floor board that I have temporarily resolved. The volume of the amp goes down a few seconds after turning on the equipment. Disconnecting the cable from RJ45 the volume appears again at maximum level. As I work in electronics, I drew a diagram of the wha/volume board and took some measurements that led me to the conclusion that the photo diode M3 (volume control) was faulty. I removed the photo diode M2 (wha control) and put it on M3, so now I have the volume but I don't have the wha which I use very little. My problem now is that I don't know the reference of the photo diode to buy and put it on the M2 to have wha again. Can anyone help me and provide a part list or schematic of the wha/volume board where I can see the photo diode reference, please? Quote Link to comment Share on other sites More sharing options...
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