TC Stereo Chorus/Flanger voltages
Hi, I'm working on a TC Stereo Chorus as detailed in this post: viewtopic.php?f=1&t=18002. Unfortunately, after making and populating boards, I've hit a brick wall (getting only buzz), and in order to troubleshoot need the IC voltages from a functioning unit. Would anyone who owns one be willing to take some measurements and assist? Many thanks!
- Fender3D
- Cap Cooler
I think you'll need more than just voltages...jdub wrote:...in order to troubleshoot need the IC voltages from a functioning unit.
this is not a project to do "by numbers". you'll need to know how THESE chips work, or need to work, since there are few regulation points and bias voltages usually come from the previous chip... see BBD bias.
Voltages are more or less as usual: 1/2Vcc @ op amps pins, as per datasheets on the other chips. Variable voltages @ LFO and logic (+Vcc or GND) @ 4007 and 4016
After audio-probing, it turns out the problem was a ground issue with the enclosed output jack, and I've got success! Still need to calibrate and tweak, but once I do I'll post details. Might be a little while though, I'm only working on it when I have spare time. Also want to get the OK from Bajaman to post the edited PCB transfers. Thanks for the replies!
- bajaman
- Old Solderhand
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ok by me
cheers
bajaman
cheers
bajaman
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