Hi Antonio,
?
Thank you for the thought.? I did see a mention of this in an old posting here from around 2016 IIRC.? I did check all of the PCB connections around the previous repair to the board in case someone was sloppy but I could not find any issues.
?
I'm sure there is a clue from the behavior of the unit presently -- specifically how the triangle generator ramps up but then edges down when it (A1TP4) hits +6.5V (should be +5V).? And how the bottom of the waveform varies in voltage depending on the frequency dial setting (current source/sink setting).
?
If you're curious, I've uploaded waveforms from various test points over on eevblog where I've another thread on the unit: ?
?
