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FDP Forum / Amp Mods, Repairs, and Projects / Super Reverb reverb not workiing

Mars Hall

USA NW Indiana

Apr 9th, 2019 07:50 PM   Edit   Profile  

I've been trying to diagnose a 1970 SR. The reverb just quite working. I've tried replacing both tubes. The reverb tank transducers are reading within tolerance as well as the transformer. What have I overlooked?


Too Near Atlanta GA

Amp Tech Emeritus
Apr 9th, 2019 09:06 PM   Edit   Profile  

Have you done voltage checks on V3 and V4? Have you checked continuity of the reverb cables? Ensure good electrical connection of the tank cables on both the amp and the tank?


Mars Hall

USA NW Indiana

Apr 9th, 2019 09:19 PM   Edit   Profile  

I did check continuity of the cables, they're good. I'll check voltages at V3 and V4 and report back.

Contributing Member

Just beyond Mars

there's a world of fools
Apr 10th, 2019 04:17 AM   Edit   Profile  

Check the control pots too. Make sure they're in spec, connections are good, and they have good ground continuity.

(This message was last edited by Peegoo at 08:11 AM, Apr 10th, 2019)

Contributing Member


Apr 10th, 2019 05:08 AM   Edit   Profile  

I know you said you checked the cables, but have you checked the foot switch for proper operation?

FDP Forum / Amp Mods, Repairs, and Projects / Super Reverb reverb not workiing

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