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Did I zap my IC?

2/27/1999 9:01 AM
Lee MacMillan
Did I zap my IC?
I built the Craig Anderton preamp a while back using a PCB I made from his mask. Worked fine but I needed a better encloser and wanted to change the pot to a miniature. In the process of moving the board, battery clips, jacks, etc. a couple of the wires going into the board broke so I resoldered them in. A also changed the pot. I neglected to remove the IC, a 741 8-pin DIP from its socket while soldering. None of my soldering was anywhere near the chip but now the preamp doesn't work. Could I have damaged the chip by soldering these leads back onto the board without removing it?
2/27/1999 2:09 PM

I doubt it. Unless you were on it with the iron directly. "a couple of the wires going into the board broke..." Go back and recheck what you "fixed". I have done this before. Usually when I was in a hurry. Mark
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2/27/1999 5:32 PM
Lee MacMillan

I spent an hour checking all the wiring last night before my post. There isn't all that much. I've got continuity everywhere I should and everything looks just like it did before I made the changes. I'll go check everything again. Shoulda just left the damn thing in the old enclosure:-(  
2/28/1999 11:55 AM

What kind of enclosure did you change it to? I wonder if the circuit is being grounded out or something....?  
You might want to check my site for debugging tips and also R.G. Keen's site for tips on testing your circuit.  
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