Working on a friend's 1972 Deluxe Reverb - vibrato question

Fender Amp Discussion

Moderators: pompeiisneaks, Colossal

Post Reply
Firestorm
Posts: 3033
Joined: Fri Jan 25, 2008 7:34 pm
Location: Connecticut

Re: Working on a friend's 1972 Deluxe Reverb - vibrato question

Post by Firestorm »

mlp-mx6 wrote:OK, further exploration revealed that if I remove the 12AX7 for the trem the thumping still happens, but of course no flashing neon. This removes the trem osc. from the cause of the problem. Swapping power tubes didn't do anything either. Screen resistors still in place. This silverface also has the grid caps to ground, FYI.

Any suggestions?
Oh. Blackface it. Then there will be just one thump. (Unless the board is conductive).
Top
User avatar
BTF
Posts: 194
Joined: Wed Oct 18, 2006 2:27 pm

Re: Working on a friend's 1972 Deluxe Reverb - vibrato question

Post by BTF »

Perhaps your standby switch? It wouldn't be the first time a standby caused thumping.

Good Luck!
Top
mlp-mx6
Posts: 1111
Joined: Sat Feb 04, 2006 4:24 pm
Location: NW Atlanta

Re: Working on a friend's 1972 Deluxe Reverb - vibrato question

Post by mlp-mx6 »

Blackfacing done, I'll check the standby switch as soon as I can. Thanks again.
Wife: How many amps do you need?
Me: Just one more...
Top
Post Reply

Return to “Fender Discussion”