Sound Skulptor forums

Build help and troubleshooting => MP566 Tube microphone preamplifier => Topic started by: Claudio on January 15, 2022, 11:07:44 PM

Title: Low voltage check failed
Post by: Claudio on January 15, 2022, 11:07:44 PM

Hello everyone,

When going through the MP566 test guide, I’m stuck at point 4 (Low voltage check). According to the documents I’m supposed to get a voltage between -3.8V and -5V between the TP8 and 0V test pins, but what I really get is -15V. What could I have done wrong?

Thanks,
Claudio

Title: Re: Low voltage check failed
Post by: Claudio on January 15, 2022, 11:31:38 PM

Nevermind. Seems like there was a bad solder joint at the power-up PCB. Now it’s working as intended.