Hairball 1167 rev D Power Supply - CR6 measuring 0,777 V instead of -10V

probablyhenri said:

Hi,

I'm building my first DIY project ever and have no experience with electronics. I built the power supply of the Hairball 1176 Rev D today and checked every step twice. When i measure the voltages by placing the common lead on the CT of the power connector and the other lead on the -30V mark (near R87), the result is correct. But when I measure at the -10V mark (near CR6) I get a reading of 0,777V DC.

Does anyone know what could cause this incorrect result? As I said, i'm completely new to this, so I have no experience with troubleshooting electronics... Hope you guys can help.

Thanks in advance!

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