Big problem with deluxe reverb 65

[Travis8]

Hi,

I´m trying to fix a deluxe reverb, the issue is that turn up the reverb make a lot of hiss, the hiss only come down when I disconnect the reverb tank..

some ideas?

[Travis8]

Is the TAD 4AB3C1B new one..

[Travis8]

Also If I remove V4 noise dissapear and If I remove v3 noise still there.

[Travis8]

I try with a new V4 and the noise continue.

the noise here: https://drive.google.com/file/d/1Tyx-001ATqgZxwEcXtoSo04p8hshFqnC/view?usp=drive_link

[PRR]

> deluxe reverb 65

Probably the 1993 Reissue?
https://robrobinette.com/images/Guitar/Deluxe_Models/65_Deluxe_Reverb_RI_Manual.pdf

[Travis8]

> deluxe reverb 65

Probably the 1993 Reissue?
https://robrobinette.com/images/Guitar/Deluxe_Models/65_Deluxe_Reverb_RI_Manual.pdf

Serial number: AC 075690

[Travis8]

could be RCA cables?

The tank is very new, I think is correct.

[sluckey]

Why was the tank replaced?

[Travis8]

Why was the tank replaced?

Becouse old one doesnt sound and the tremolo doesnt sound too.

Now works but with this noise

[sluckey]

Try another cable set. OK to borrow from your sound system.

BTW, tremolo issue is likely not related to reverb issue.

[Travis8]

Try another cable set. OK to borrow from your sound system.

BTW, tremolo issue is likely not related to reverb issue.

Ok, i will try another cables..

Yes, I know tremolo must be another think but I didnt found it yet... tubes are new

[Dave]

Also try a snubber cap on the return from the reverb tank like Fender used in the 70's. That's what that cap was there for.


Dave

[Travis8]

Ok, tremolo was bad footswitch now is working

[Travis8]

Also try a snubber cap on the return from the reverb tank like Fender used in the 70's. That's what that cap was there for.


Dave

ok, never see it. I will investigate

[sluckey]

2000pF is the same as .002µF. If cables and/or this cap don't fix this issue you need another tank. It seems like I see lots of issues with new tanks these days.

[Travis8]

2000pF is the same as .002µF. If cables and/or this cap don't fix this issue you need another tank. It seems like I see lots of issues with new tanks these days.

Ok, I order one good RCA shielded cable to try it, the two 12AT7 are this one "TAD ECC81/12AT7-Cz" could be problematic this tube for reverb?

[Latole]

First of all, can you confirm that this amp has already worked perfectly? No hiss?

Secondly, has this amp ever been repaired by another person ?

And finally, show us a good photo of the circuit. I suspect somes wires are misplaced.