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September 15, 2019, 10:38:48 PM

Author Topic: Smoked Resistor  (Read 71 times)

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Offline Cary

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Smoked Resistor
« on: September 09, 2019, 12:42:13 PM »
Hi Dan and Paul,

After I did the resistance checks, which were correct, I plugged in the amp, the 3.32K, 1/2 watt, resistor on points 45 and 47 began to smoke. I double checked my wiring and everything is correct, any ideals what went wrong?

Thank you,

Cary

Offline Paul Birkeland

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Re: Smoked Resistor
« Reply #1 on: September 09, 2019, 02:35:37 PM »
I would post some build photos, maybe we can spot something. 
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Paul Birkeland

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Re: Smoked Resistor
« Reply #2 on: September 09, 2019, 06:12:12 PM »
Also triple check the orientation of the 22uF cap that follows that part.  If it's in backwards, the 3.32K resistor will smoke.  If one end of the 3.32K resistor is connected to an incorrect terminal, it could also smoke.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Cary

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Re: Smoked Resistor
« Reply #3 on: September 11, 2019, 12:51:45 PM »
Hi Paul,

I triple checked the orientation of the 22uF caps, everything was correct, what is my next step?

Cary

Offline Paul Birkeland

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Re: Smoked Resistor
« Reply #4 on: September 11, 2019, 12:52:28 PM »
Post some photos.

-PB
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man