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7/12/2025, 10:50:46 AM
>>2930642
Gotta start by saying the Italians must have been smoking something when they designed this. I've never seen so many ICs on a front panel PCB, that thing must be doing all the control for the entire machine. Why so many logic gates? and EVERY SINGLE IC is socketed?!? Insane, it's like they expected them to need replacing regularly. It's a lot more complex than I envisioned, could be more than 2 layer PCB, impossible to decipher through photos.
Could only trace one track from that burned resistor over to what looks like a bit of PSU circuitry.
If the other end of the resistor goes to pin 1 somehow, it could be that pins 1 and 2 are 2 sides of a voltage divider with the mystery 3rd pin which would be the wiper of the potentiometer for amp control. Pure conjecture on my part.
Also it appears 4 of the PCB mounted potentiometers are broken. They should all have shafts poking out.
Don't think there is anything more that can be done, put it back together if you can.
Gotta start by saying the Italians must have been smoking something when they designed this. I've never seen so many ICs on a front panel PCB, that thing must be doing all the control for the entire machine. Why so many logic gates? and EVERY SINGLE IC is socketed?!? Insane, it's like they expected them to need replacing regularly. It's a lot more complex than I envisioned, could be more than 2 layer PCB, impossible to decipher through photos.
Could only trace one track from that burned resistor over to what looks like a bit of PSU circuitry.
If the other end of the resistor goes to pin 1 somehow, it could be that pins 1 and 2 are 2 sides of a voltage divider with the mystery 3rd pin which would be the wiper of the potentiometer for amp control. Pure conjecture on my part.
Also it appears 4 of the PCB mounted potentiometers are broken. They should all have shafts poking out.
Don't think there is anything more that can be done, put it back together if you can.
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