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Snaredrum Power Voltages

Posted: Jun 2nd, '16, 00:50
by Boterham
Hey there!

I'm at the point where I'm measuring power voltages before I add the IC's. The M5218L's all measure +15 and -15 where they should, but the two 0.6v points are not measuring 0.6v.
the one near VCO1 is 0v
the one near VCO2 is about 15 mv

Or aren't these supposed to read 0,6v at this point?
Is it safe to put the IC's in?

Thanks in advance!

Re: Snaredrum Power Voltages

Posted: Jun 2nd, '16, 05:15
by e-licktronic
Boterham wrote:Hey there!

I'm at the point where I'm measuring power voltages before I add the IC's. The M5218L's all measure +15 and -15 where they should, but the two 0.6v points are not measuring 0.6v.
the one near VCO1 is 0v
the one near VCO2 is about 15 mv

Or aren't these supposed to read 0,6v at this point?
Is it safe to put the IC's in?

Thanks in advance!
You can put ICs in without any problem.
0.6v is voltage peak to peak of VCO waveform.

Best regards,
e-licktronic

Re: Snaredrum Power Voltages

Posted: Jun 2nd, '16, 11:56
by Boterham
Thanks for the swift response!

Re: Snaredrum Power Voltages

Posted: Jul 26th, '16, 20:49
by 4teenth
What about IC36? I'm not getting any voltage on any of those pins.. :?

Re: Snaredrum Power Voltages

Posted: Jul 27th, '16, 00:57
by Kazper
The 4069 should have +/-15V on pins 7 & 14 check with one lead on ground... You also need RP3 (+15v) & RP4 (-15v) filled with lead shorts or 0 ohm resistors. All the RP resistors act as a power rail jumpers.

Re: Snaredrum Power Voltages

Posted: Jul 27th, '16, 18:03
by 4teenth
Kazper wrote:The 4069 should have +/-15V on pins 7 & 14 check with one lead on ground... You also need RP3 (+15v) & RP4 (-15v) filled with lead shorts or 0 ohm resistors. All the RP resistors act as a power rail jumpers.
Hmmm... 1 ish volt on all the pins... :?

Re: Snaredrum Power Voltages

Posted: Dec 20th, '17, 03:12
by Teef
4teenth wrote:What about IC36? I'm not getting any voltage on any of those pins.. :?


Me either. What ended up happening with yours?

Re: Snaredrum Power Voltages

Posted: Sep 19th, '18, 15:50
by JP maro
I have the samedi problem on ic36. No power voltage on any pins. The other ic have voltage. Rp3 ans rp4 have 15 ans -15v. Hello please