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G1, yes- all the regulators are To-220 packages. I'm gonna give it a go, we'll see. I am gonna be replacing the electrolytics and the tantalums around the...
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VR 2 is listed as 340T-12 while VR3 is 340-12. I'm not clear on the T other than to say the packaging is TO-220. Is there some electrical difference? When...
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Thanks very much for your replies. I will see about acquiring these VCs and give it a go.
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Oof, it's been a long time since I posted on a forum. Links worked.
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Late 70s MXR Digital Delay power supply and voltage regulators
Oof, I never really mess with stuff like this as I'm more of a tube and amp guy. A buddy has one of these that clearly needs power supply work and I'm trying...
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So the transformer was not bad per my testing. Just in case I missed anything there I decided to hook up another OT. Same results.
I noticed...
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So things were looking ok with this amp. I fire it up to play and it has developed this sizzling sound over the top of the signal.
At low settings...
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All the resistors are in spec. I've tried different AU7s with the same result. I lowered R33 to 620k and that helped alot.
Thanks for your...
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AMPEG VT-22 phase inverter imbalance
I've seen a number of threads concerning this issue with the floating paraphrase inverter that Ampeg used on amps from that time period. The amp in question...
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Cornell Dubilier caps- date and condition
Whelp, I thought I was gettin' a deal..... I got some reasonably priced Cornell Dubilier 'lectros for some old solid state gear
with beefcake power...
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Univox U-400G blatty, distorted, and weak output
I'm pulling my hair out on this one. I have a schematic for it but there are no voltages for anything.
I've tested the transistors...
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The Weller SP80 is what I use. Anytime I need to solder or unsolder on a chassis, this iron gets it done with no problem. I just keep it hanging
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