Battling with a breadboarded circuit that wouldn't work!!

[StephenGiles]

I've spent 3 evenings troubleshooting an envelope generator circuit, using brand new opamps, and finally last night I located the problem - one bent pin on a dual opamp only because I decided to swap the 4558s just in case one was duff.

Very annoying and such a waste of time!

[Krallum]

share the love,  had a similar thing happen except two transistors were labeled  backwards on the layout. verified my ass. Somehow all the pin voltages worked out correctly

[trjones1]

I breadboarded a Rat once that I checked and rechecked over and over and just wouldn't work.  I even put in a new 308 just in case the other was dead.  It turned out there was something shorted somewhere that did kill the first 308... and the second 308.  So two busted and expensive ICs down the tube, and I never figured out what was wrong with the circuit.  Worst breadboarding experience ever.