ThatDude
Joined: Feb 07, 2012
Posts: 6
Ohio
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Posted on Aug 10 2014 04:46 PM
So I recently bought a Fender Yale Reverb amp off Ebay in an effort to quickly (and cheaply!) replace my stolen gear. Love the tone, love the built in verb. It's a pretty swet amp for being SS.
However...whenever I turn the verb past 5 it hums/feedbacks/makes an awful noize. I have no experience with the technical side of life. Anybody have any clue what may be causing this issue? If it were some junky amp I'd take it apart and tinker with it, ya gotta learn these things somehow  , but as it's somewhat hard to find and out of production since the 80's I'd really rather get some kind of heads up first before I beat it with a stick.
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SanchoPansen
Joined: Jan 04, 2011
Posts: 1588
Berlin L-Berg
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Posted on Aug 10 2014 06:02 PM
I'd first try to replace the pan and/or connector cables.
— The Hicadoolas
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ThatDude
Joined: Feb 07, 2012
Posts: 6
Ohio
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Posted on Aug 10 2014 10:38 PM
Hmm if the pan was f'ed wouldn't the verb not sound at all, or hum regardless of the setting? I'm hoping it's just the cables, but like I said I ain't no whiz with these kind of things.
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Bob_Kennedy
Joined: Feb 27, 2012
Posts: 316
Mesa, AZ.
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Posted on Aug 11 2014 01:38 AM
Is the reverb pan still inside the black vinyl sleeve? If not, it should be. How close is the pan mounted to the speaker magnet? Does it have the stock speaker(s)? I've experienced the same problem you describe. Turned out that the springs inside the reverb pan were being affected by the speaker magnet. The amp had an aftermarket speaker with a larger magnet than the stock speaker. I ended up having to mount the pan further away from the speaker & that cured the issue.
— Otto & The Ottomans
Kennedy Custom Guitars
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SanchoPansen
Joined: Jan 04, 2011
Posts: 1588
Berlin L-Berg
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Posted on Aug 11 2014 01:56 AM
ThatDude wrote:
Hmm if the pan was f'ed wouldn't the verb not sound at all, or hum regardless of the setting? I'm hoping it's just the cables, but like I said I ain't no whiz with these kind of things.
Could be that the hum is present all the time, but only kicks in as soon as a certain point is reached on the 'mix' level (reverb). Pans are easy to replace and actually quite cheap. It is never a bad thing to have a couple of backups anyway.
I had the same issue as Bob discribed with my VL RI. I had to move the pan a little, but it didn't hum. I got a nasty feedback as soon as I cranked it above 5-6 on the mix. I also replaced the pan and moved it a little bit to the back (away from the speaker).
— The Hicadoolas
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LeeVanCleef
Joined: Oct 05, 2011
Posts: 744
France
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Posted on Aug 11 2014 09:15 AM
Bob_Kennedy wrote:
Is the reverb pan still inside the black vinyl sleeve? If not, it should be. How close is the pan mounted to the speaker magnet? Does it have the stock speaker(s)? I've experienced the same problem you describe. Turned out that the springs inside the reverb pan were being affected by the speaker magnet. The amp had an aftermarket speaker with a larger magnet than the stock speaker. I ended up having to mount the pan further away from the speaker & that cured the issue.
Apparently on the Yale Reverb the reverb pan is a short type and it is mounted on the side panel.
Firs thing you should do is wiggle the reverb cables around with the amp on and the reverb turned up and listen for possible bad connections.
Then you should check the rca connectors on those cables for any trace of oxidation, or anything that could cause a bad connection.
Perhaps you can unplug the reverb pan input cable, crank the reverb knob and see if the hum is still there? That might help to locate the source.
Good luck! In my experience the Fender SS amps from the eighties are pretty good sounding.
— Old punks never die... They just become surf rockers.
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ThatDude
Joined: Feb 07, 2012
Posts: 6
Ohio
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Posted on Aug 15 2014 02:21 AM
Thanks fellas! I will mess around with it as y'all said and see if that fixes it. I'm thinking its a problem with the electronics as it's now starting to cut out every once in a while (the sound in general, not just the verb). Probably gonna have to take it to a tech and have him replace a bunch of stuff as I do not have the tools to do that myself.
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