Eric_Maine wrote:
I have rechecked all the resistors, found one that seemed to be the wrong colors, one of the 2k2 ones LOOKED like brown red black brown brown instead of red red black brown brown, but with the multimeter it read the same resistance as all the other 2k2 resistors. I also populated the board by groups of resistors, so it came from the strip of 5.
I wouldn't worry about that resistor. The color bands can be notoriously difficult to visually distinguish. If it measured correctly and was on the same strip with 4 others, it's the right resistance.
Eric_Maine wrote:
I also looked at the schematic and couldn't see any way that the LED would light in both footswitch positions, I looked with a loupe at the footswitch and did see a couple of wild strands from #2 pole, trimmed them, with high hopes, but the pedal behaved the same as before. I looked at both sides of the board around the #1 solder hole for shorts, nothing. This was done a little while ago. The footswitch seems to check out just fine with the multimeter, with poles 1 4 7 and 3 6 9 alternating between connection to the middle ones. But it sure seems like for the LED to be lit in both positions it's gotta be the switch.
OK, we can determine if the ground short is on the PCB rather than in the footswitch. Detach the wire at lug 2 of the switch that connects to the PCB ground trace. If the LED still stays lit all the time, the short must be on the PCB somewhere.
Eric_Maine wrote:
Just checked the footswitch again. I AM getting a little current flow between poles 8 & 9 when there should be none. Call it 300,000 ohms.
I think that's probably a red herring. Can't see how that could cause either of your problems.
Eric_Maine wrote:
I think I can use the multimeter to check DC voltage, I mean, I've checked batteries and such. So let's assume that yes, I can do that on a circuit board.
OK, I'll get back to you on that shortly. Let's see if we can solve the LED issue first.
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