#1
Hi there, this is only my 2nd post so dont bite

I have owned a Fender Deluxe 112 plus amplifier for about 6 years now, it was my cousins before and he gigged it heavily for best part of 10 years. It has always been superb but the amplifier has developed a constant hiss/buzz. this I know is not a guitar issue as it occurs on all 3 guitars, with and without effects units and even if i unplug the guitar lead completely.

I suspect this is an earth issue or a shielding problem somewhere? I have the schematics for the amplifier but have never had the time to go thru them all.

I'm sure this is not the first time an amp has developed a buzz so i'm sure someone on here can point me in the right direction?!

The amplifier does operate spot on, sound is great but there has always been this background hiss/buzz .

Can anyone suggest what this may be? I'm due to start gigging again very soon with a new band and so would love to get this cured before it is really called upon.

Cheers
Gibson SG VooDoo/Fender Satin Strat/Squire showmaster heavily customized
Fender Deluxe112 amp/Line6 POD2/Crybaby classic

10 years and counting
#2
I just had the same problem with my Marshall. The input jack came loose from the circuit board.
#3
im not sure about the amp type, but is it valve?? If so, get them checked, regardless. Go to an amp tech.


The Gear I Use Most:
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#4
its a solid state amp.

ill check the input jacks tonight since the missus is out

What do you mean an amp tech? like an electrician who can work on it? I'm confident that I can do the work if I know what to look for (saves me some money!)
Gibson SG VooDoo/Fender Satin Strat/Squire showmaster heavily customized
Fender Deluxe112 amp/Line6 POD2/Crybaby classic

10 years and counting
#5
Quote by myromeo
its a solid state amp.

ill check the input jacks tonight since the missus is out

What do you mean an amp tech? like an electrician who can work on it? I'm confident that I can do the work if I know what to look for (saves me some money!)



Well it's just an amp tech ( who is a person who specialises in fixing amplifiers, and maybe other musical electronics ) will generally know what it is. But if you can do it by yourself, then by all means


The Gear I Use Most:
Gibson guitars, Les Paul, ES-335, SG and more.
Dunlop Crybaby | Dunlop Volume | Boss TU-2 | Ibanez TS-9 | Maxon AD-999
Planet Waves Custom Leads
Marshall JCM900 (model: 4100 + 4101)

TooJoo The Band
#6
is the amp near any sources of interference? such as a computer, other speakers, some lights, or other electronic things as such? those things can give you a heck of a buzz
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#8
ok i got grabbed at work to do some work! the shock of it all.

The guitar is in my spare room which has nothing electrical in it at all other than the ceiling light.

the noise has been present regardless of where i plug it in so is not socket specific.

I think ill have a look at the schematics tonight and see what I can see.

is it typically the grounding circuit that eliminates background noises or could it be something else? presuming nothing is interfearing with it.
Gibson SG VooDoo/Fender Satin Strat/Squire showmaster heavily customized
Fender Deluxe112 amp/Line6 POD2/Crybaby classic

10 years and counting
#9
Quote by myromeo
its a solid state amp.

ill check the input jacks tonight since the missus is out

What do you mean an amp tech? like an electrician who can work on it? I'm confident that I can do the work if I know what to look for (saves me some money!)

Your Fender Deluxe is solid state?



check again and look for glass tubes.

you said this is a new problem? No changes to environment? Is the ceiling light florescent? Could be lots of things. Input jacks, bad cables, grounding, microphonic tubes.....oh, wait - it's solid state. I forgot.
#10
^Yeah, the fender deluxe plus is solid state

(taken from Harmony central reviews)

"The clean channel sounds nice - it's especially ballsy for a solid state amp."

"Like most solid state amps, the sound greatly deteriorates at higher volumes."

And it has a headphone jack
#12
It does sound like connection taking a crap. Input, ground, something. Open her up, unplugged obviously, and see what gives inside. If you're adept at all electronically you may spot the source of the issue and repair it. If nothing appears, then take it to a local pro to diagnose. It could be on it's "way" to that big amp pile in the sky. Or not.
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#13
the ground might be bad

and if it's over 15 years old the electrolyte caps could be bad take it to a tech
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#14
cheers for the advice. i got dragged into football tonight so will have to look at it tomorrow morning, ill post my findings and we can take it from there
Gibson SG VooDoo/Fender Satin Strat/Squire showmaster heavily customized
Fender Deluxe112 amp/Line6 POD2/Crybaby classic

10 years and counting