Chroma 6404 issue

[Deni]

I have Chroma 6404 programmable AC source whose output slowly (over several seconds period) changes output voltage for ca. 1-2V.
I have service manual, but there's no schematics - only component layout. I would be VERY grateful if somebody has schematics and is
willing to share it...

[coromonadalix]

Did you ask Chroma directly ??   maybe they would share it or provide it to you under a non disclosure agreement ?

[PTR_1275]

I’ve asked chroma for documentation before. Got the usual runaround of “we can’t provide it to non authorized service centers”, then got a email from the Australian service center with some absurd cost just for me to send it back and look at it.

If they’ve changed and you can get a service manual, I might try again

[harrimansat]

I need it too, mine has short protection, but when I disconnect the current transformer it works.