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Post subject: Intermittent issue with Fender Reverb Deluxe 68
Posted: Wed Aug 07, 2019 12:27 pm
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Joined: Wed Aug 07, 2019 12:22 pm
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Hi all. I've had this problem with my Fender Reverb Deluxe 68 reissue, which
I'll try to describe to the best of my ability.
This happens intermittently once the amp warms up. All of a sudden there is a
lot of static kind of noise which does not depend on the volume knob
(sounds like when wind blows into a microphone) and
the sound of the guitar degrades significantly. Note that if I hit the amp with
hand, the problem stops and all is good again.
The problem seems to have to do with the second/vintage channel. If I pull V2
tube, the problem never comes back (while I play on channel 1 obviously), which
makes me rule out the channel 1 circuit and the power stage (is it shared among
the two channels?)
So far I've tried swapping all the smaller tubes, but the problem persists.
A reliable way to reproduce the problem is to pull the guitar cable in and out
of the amp slowly.

As the next step in my troubleshooting, I am considering taking apart the amp
and reflowing all (or suspicious) solder joints to make sure I don't have a cold
solder joint. I've dealt with soldering electronics in the past, but can anyone
chime in on the safety aspects? Obviously I'll be working on the non-powered
amp, but I hear stories of significant voltage remaining in caps here and
there - how do I make sure I don't get shocked?

The amp is still under warranty, so I'd like not to void it with anything that I
do as it can be my last resort to fix it. (but I'd rather fix it myself)

Thank you


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Fender Play April 2019
Post subject: Re: Intermittent issue with Fender Reverb Deluxe 68
Posted: Sun Aug 11, 2019 1:13 am
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Joined: Tue Jun 29, 2010 1:20 pm
Posts: 9623
Location: Indiana
Intermittent does indicate a poor connection, quite possibly a solder joint, or the tube socket connections need cleaned or re-tensioned. If you try the repair yourself, there is the possibility of voiding the warranty.

BTW, the '68 Custom Deluxe is not a reissue, not even close, it is a Vintage Modified. Not sure why people want to add the reissue moniker where it doesn't belong.

_________________
---> "The amp should be SWITCHED OFF AND UNPLUGGED before you do this!" <---

Por favor, disculpe mi español, no se llega a la práctica con mucha frecuencia.


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Post subject: Re: Intermittent issue with Fender Reverb Deluxe 68
Posted: Sun Aug 11, 2019 3:54 am
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Joined: Sat Dec 27, 2014 8:14 am
Posts: 45
I have the same issue on my 68 Vibrolux. Same sound. Never tried my hand but going in and out of standby it goes away. Usually happens once at start of practice and then it’s quiet. I thought it was static build up or a bad tube. Thanks for any suggestions


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