Bad 0.1 V test signal. Mainboard issue.

[Avt585]

hi, sorry for starting another "cant calibrate" topic, but i have some additional questions.

motherboard v. 109 15000 00d1
analog board v. 109 15001 00c1
fw 55

i just start to calibrate this thing then i saw this strange signal on 0.1V. i cheked mainboard resistors and found R31=22Ohm instead of 470? Is that normal?



P.S. I have -7.55V on V- instead of - 7.15V, AV- is Ok. Is there any reason to do a troubleshooting?

P.P.S. Is it possible to use on these old boards a step up converter 250-350kHz w/o filtering for power supply?

[jan]

please re-upload picture

[Avt585]

please re-upload picture

That is strange, i still see the picture. Are you logged in?