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Good catch Mike.Mike_LA wrote:Ahhh,m Nope, it's the transistor that I just installed.
If I wiggle it, the midi board goes on then off.
Think I will hard wire the missing copper point on the board.
Well, it has new mullard power tubes so I don't think it's them but you never know.Anitoli wrote:Noise can be many things, old worn tubes whose current draw is to far apart, bridge rectifiers getting worn out, bad caps in the power supply.
do you have a scope?
I found the bad solder joint on the transistor with the chopstick, maybe I will try a bit more.Anitoli wrote:Also check the loops, try bypassing with jumpers. Do the chopstick test for bad solder joints. Did you remove the PI?
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