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Negative Voltage in Noise Section? U24 PIN1

Posted: Jul 18th, '17, 17:51
by SOM
I have read many threads about the 130mv at PIN1 U24 in the noise section.

I got around 240mv but negative ?! so now .. is this a measure fail or what? always -240 - -280 mv (depends on tm4)
i checked all my capacitors .. they are right.

any ideas?

best
sascha

Re: Negative Voltage in Noise Section? U24 PIN1

Posted: Jul 19th, '17, 16:35
by Frotje
Need to Measure in AC mode

Re: Negative Voltage in Noise Section? U24 PIN1

Posted: Jul 20th, '17, 10:43
by SOM
yepp.. that was my fault. and a cheap multimeter the next problem :idea:
in ac i only canĀ“t measure mv...

thanks for the help!