Help PT80 died...

[rody82]

It was working fine for months, boxed up.
Today it suddenly died when I powered it up.
No sound when i switch it on. (the led works though)
Is it the opamp maybe?

Some interesting background info:
I was using it with 2 x 9V. (2 wallwart supplies,
wired up so that they give 18v). I usually had
to reset (plug the power out and then back in) it
a few times to get the delay working, but there was always
some sound so far...

any ideas?

[rody82]

Bad news...
I've measured 17V everywhere.
Its 17V at every pin of the 78L05 and 78L12.
How could they die???
Now do i have to change all those chips? 

[Paul Perry (Frostwave)]

If it is 17V EVERYWHERE there might be a ground connection gone bad somewhere. Here's hoping..

[rody82]

while measuring, i forgot to plug something in the input jack,
thus there was no ground connection to the board. That's why it was 17V everywhere 
Today it came back to life, but i still dont know what the problem was.
Maybe i'll rehouse it someday, because its not too reliable now. Definitely not
for stage yet

[Paul Perry (Frostwave)]

If only I could diagnose my OWN problems from 10,000 miles away ....... I guess when it is somebody else's box, one can take a calmer look at it!