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The BA-3 as preamp build guide
The BA-3 as preamp build guide
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Old 11th November 2019, 01:08 AM   #1601
Dneu2011 is offline Dneu2011  United States
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Join Date: Jul 2017
I am still having issues with my build. With my multimeter on the input of C3 and ground, I’m and still getting 0V DC offset and unable to get bias over 300mv. Below are the measurements I took at the JFETS:

-Q1 at D is 24V and at S is 44mv
-Q2 at D is 24V and at S is 34mv

Both sides are the same reading.

Is there a possibility I fried my Mosfets or JFETs. When I first turned it on I had installed my Transformer incorrectly.

Any help is appreciated. Thanks.
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Old 13th November 2019, 01:30 AM   #1602
Russellc is offline Russellc  United States
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Location: midwest
The BA-3 as preamp build guide
I miss connected my first BA3 FE to the power supply and killed the mosfets. It's possible. I also remember turning the pots a lot before numbers started to register.

Russellc
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Old 13th November 2019, 03:46 AM   #1603
Dneu2011 is offline Dneu2011  United States
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Ok I will order a couple new sets and give it a shot.
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