PT2399 oscillation question

[sdb guitars]

Can runaway oscillation (in, for example, a Sea Urchin) damage the PT2399 chip or other assorted parts in the circuit?  I assembled a Sea urchin last night, and it worked, though was a bit noisier than usual.  When playing around with allowing it to self-oscillate, suddenly it stopped echoing and started just passing signal.  Tried power reset, waited 5 minutes, etc., it wouldn't start working again.  I then tried no fewer than 4 other PT2399s before I was able to get one working again.

Also, is there a way to volume-limit the oscillation so that it doesn't kill the pedal/amp/listener?

Thanks,

Shawn.

[gtr2]

I doubt it's the oscillation, I've had pt2399's oscillating overnight by accident (amp off, delay on)  You most likely have a batch that locks up.  Try connecting pins 3 and 4 on the pt2399 and see if that works.  If so just solder a jumper there.

[sdb guitars]

Oh, I've been soldering a jumper between pins 3 and 4 on all of my PT2399's just to cover that base... it's just weird that it would work for a while and then stop.  Drives me crazy.  At least it isn't boxed up yet.

[gtr2]

Maybe a faulty regulator?

[gtr2]

When its not working see what voltage you have on pin 1 of the pt2399.

[sdb guitars]

An excellent suggestion, sir! I will keep my meter handy next time I plug in and test the board.