e-licktronic Forum

Hi,

Any troubleshooting hints for -+18V when measuring U7 voltages?

Dear bleah,

Measure C88* and C89* voltage. Check the polarity of this capacitors too.
Are the other ic's voltages -15v , +15v ?
Do you already solder U7 ?
Have a look on the HiHat schematic then test all +B3*, -B3* voltage.

Best regards,
e-licktronic

Well, I don't quite understand what happened but now U7 voltage is around +/-15V after I build the Master section.

I have socketed U7 but I tested voltage again without IC in place and voltage is good.
All other IC voltages have been correct.
Polarity of C88 & C89 are correct.

So it seems that I don't have problem anymore.