Oscillator 1 on my source has quit on me. Before it went completely out it would fail to switch to triangle wave, now it doesn't make any sound for a while. After warming up for a long time, it makes a very high pitch FM type sound and slowly comes down closer to the note it should be, but is pretty unsteady. Osc 2 is perfectly normal, and everything else is fine, just osc 1 is bad. I have swapped around a great many of the ICs on that board, including all of them in the osc 1 section according to the schematics, but no luck.
Does anybody have any possible clues? Any help would be greatly appreciated.
Last edited by Jacob Hunt
on Mon Jun 09, 2014 6:50 pm, edited 1 time in total.