#1
So I bought a Marshall Class 5 today with my xmas money and its acting up a bit. I was in the music store playing on it for about 3 hours today, going between this a Tiny Terror and an AC4TV and there was absolutely no sign of a problem. It sounded perfect. That's why I bought it.

I take it home and not fifteen minutes after powering her up she starts making this heinous crackling noise. I figure its a lose connection in my pedal board but everything's fine there so I plug straight in. Still making noise, and not the normal "This is a junk cord" noise. But to be safe I switch to my better cord anyways. Still making noise.

On top of that, it smells like something might be burning inside. There was no visible smoke and when I opened up the back and looked around nothing seemed charred. But I'm very nervous and very paranoid. This is my first tube amp and I have no idea how they work properly. Any ideas on what it could be?

I'm bringing it back to the store tomorrow afternoon to try to exchange for a better one, but I think the sales rep said that it was the only one they had. If you guys can think of anything it could be that I could pass on to the repair guy you could save me days, potentially weeks of waiting for him to get to it much less figure it out himself. You guys are awesome for the help, thanks in advance.

tl:dr - First tube amp making weird crackling noises. Not Effects. Not Cable. Smells like burning. What do I do?
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DT EX-7
EHX Q-Tron +
EHX Big Muff Pi w/ Tone Wicker
Line 6 Echo Park

My PRS with SD P-Rails Build
#2
do what you're planning on doing. if they don't have anymore in stock, ask them if you can bring home an amp of equal/less value to hold you off till another one comes in, OR ask them if you can just keep playing your marshall till then.

if they REALLY wanna just have the technician repair the amp instead of getting you a brand new one, then i guess you'll have to wait about a week for it to ship to where it has to go, another week for the guys to get to it and fix it, then another week to get it back. though, i don't think it'd be unreasonable if you demanded (in a nice way?) that you just get a new model.
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#3
take it back. if they don't have a replacement to hand, get a refund.
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#4
Quote by Dave_Mc
take it back. if they don't have a replacement to hand, get a refund.


+1
#5
Did you wait for the tubes to warm up before you started playing?
#6
Quote by nazfomo
Did you wait for the tubes to warm up before you started playing?



Unless I'm taking it past 3, then I never do this. I just flick the Standby switch when I flick the power switch. Been doing it for 6 months and no problems.

Hell, it doesn't even work until the tubes are hot anyway.
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#7
Quote by Juadafi
Unless I'm taking it past 3, then I never do this. I just flick the Standby switch when I flick the power switch. Been doing it for 6 months and no problems.

Hell, it doesn't even work until the tubes are hot anyway.


It's not good for the tubes to play them when they're cold. Since you just said they don't work when they're not hot, why not just wait until they are? It's not going to instantly fry your tubes, it just decreases their life a little.
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#8
Take it back, if you're set on that amp go to a different store or order one..
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#10
First off, yes I waited for them to warm up. Second, there is no standby switch.

And thirdly, I took it back to the store today, they plugged it in and they determined it was a blown preamp tube. Since I was the only customer in the store at the time, they replaced it on the spot. It actually took them longer to find the screwdriver to get the back off the thing than to actually get it up and running. But they did and it sounded great in the store. I thank them and go home.

I get home and plug it in to the wall plug my guitar straight in without effects, wait a minute and strike a chord. It near instantly fades to silence. WTF!?!? I call the store and tell them whats up, they're just as confused as I am and they offer to order a new one straight from the factory, which I accept. Hopefully there's nothing wrong with the new one.

I may be getting a new one in a few days but until then I'm stuck with it. Any speculations as to what the ailment might be so that when I return i they don't have a totally useless waste of space lying around?
MY GEAR
Epi SG w/ Gibson Burstbuckers
Epi Casino
PRS Kit
Thinline Tele w/ SD 1/4 Lbs
Warmoth JM

Vox Nightrain
Marshall Class 5

Boss RC-20
DT EX-7
EHX Q-Tron +
EHX Big Muff Pi w/ Tone Wicker
Line 6 Echo Park

My PRS with SD P-Rails Build
#11
If they give you a brand new one that works, make an offer for the broken one for spare parts.
If video games make you violent, does monopoly make you a millionaire?
#12
Hmmmm. It sounds like it could be a problem with your wall socket. What are you plugging it in to? It's really strange that it worked at the store both times, but not your house.
Fender '04 Strat
MiM Sunburst with Maple Neck

Ibanez TS-808
Fender Blues Junior
Marshall JTM60
#13
I've just been plugging it straight into the wall in the same socket that I plug all of my amps into. Granted the only other amps I have are SS but they still sound fine.
MY GEAR
Epi SG w/ Gibson Burstbuckers
Epi Casino
PRS Kit
Thinline Tele w/ SD 1/4 Lbs
Warmoth JM

Vox Nightrain
Marshall Class 5

Boss RC-20
DT EX-7
EHX Q-Tron +
EHX Big Muff Pi w/ Tone Wicker
Line 6 Echo Park

My PRS with SD P-Rails Build
#15
Quote by metalplayer0-1
burning smell is usually normal with tube amps, its just the tubes heating up.


No, a burning smell is not normal with any amp. You should not have a burning smell and if you do, you should immediately turn it off and take it to a tech.
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#16
ya somethings fired, that sucks but take it back.... as for warming up, thats not the problem i NEVER warm my amp up no matter what volume i`m playing be it 4 or 9 LOL
#17
Quote by metalplayer0-1
burning smell is usually normal with tube amps, its just the tubes heating up.

The worst part of this is that someone might actually take this advice and this idea will spread. NOTHING should be burning in your amp, are you crazy?
#18
Quote by androidred0100
I've just been plugging it straight into the wall in the same socket that I plug all of my amps into. Granted the only other amps I have are SS but they still sound fine.



get a surge protector. i have shit wiring in my house so i have to use them for pretty much everything. dont use the new amp without one.
stay lit


Quote by PeteTLT
Will preamp tubes turn black and melt slightly undernormal conditions and still work?