Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: jalexquijano on November 07, 2017, 02:26:47 pm

Title: Fender Twin Reverb 65 Reissue scratchy volume pot on 1st and 2nd Channel
Post by: jalexquijano on November 07, 2017, 02:26:47 pm
My Fender Twin Reverb 65 Reissue is rarely used and now that i started using it i have noticed the following:

1. Scratchy 2nd channel Volume Potentiometer when wiped. It does the same on the Channel 1 but not as harsh as on Channel 2.

2. Random noise while playing

3. Reverb is very sensitive and sometimes it sounds more as vibrato than reverb. I only dial it to 1.

This amp is a reissue which is PCB and not point to point as the originals of the 60īs .

What can i get this sorted out and fixed by myself?
Title: Re: Fender Twin Reverb 65 Reissue scratchy volume pot on 1st and 2nd Channel
Post by: sluckey on November 07, 2017, 02:53:39 pm
Probably just need to clean the pots with some electronics spray cleaner. You will have to remove the pot pcb to do that. Is that something you can do? See pic...

Title: Re: Fender Twin Reverb 65 Reissue scratchy volume pot on 1st and 2nd Channel
Post by: Leevi on November 09, 2017, 02:38:24 am
Quote
3. Reverb is very sensitive and sometimes it sounds more as vibrato than reverb. I only dial it to 1.


Are you using the original foot switch delivered together with the amp?


The FS cable is common for vibrato and reverb and it must be a certain type of cable, otherwise the
reverb and vibrato signals will be mixed with each other.


/Leevi