My amp crashed to the floor
Question:
and then stopped working. Its a little 10 watt Marshall valvestate and it crashed face down from about 2.5 feet (table height). My first thought was that the jack for the guitar cable broke inside (this actually happened a little while ago and I switched in the jack from foot switch) but thats not the case as it appears intact. The only noise it makes now is an extremely high pitched whine which is sort of hard to hear because its not that loud and as I said it is very high up, a little more and I think only dogs and cats could hear it. Any thoughts on what the problem is? Thanks alot.
Response:
>and then stopped working. Its a little 10 watt Marshall valvestate and it >crashed face down from about 2.5 feet (table height). My first thought was >that the jack for the guitar cable broke inside (this actually happened a >little while ago and I switched in the jack from foot switch) but thats not >the case as it appears intact. The only noise it makes now is an extremely >high pitched whine which is sort of hard to hear because its not that loud >and as I said it is very high up, a little more and I think only dogs and >cats could hear it. >Any thoughts on what the problem is? >Thanks alot.
I don’t know. If it’s worth the effort, see it you can get the circuit board out, and with the trace side towards you, look for cracks in the CB. If you don’t see any, try resoldering all the connections. I’m not a tech, so I’d either do that, or remove what I wanted from it, and toss it in the trash. My guess is that it’s just a broken connection somewhere though. Pete — Well, I guess reality is what you make of it. –Bender
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> and then stopped working. Its a little 10 watt Marshall valvestate and it > crashed face down from about 2.5 feet (table height). My first thought was > that the jack for the guitar cable broke inside (this actually happened a > little while ago and I switched in the jack from foot switch) but thats not > the case as it appears intact. The only noise it makes now is an extremely > high pitched whine which is sort of hard to hear because its not that loud > and as I said it is very high up, a little more and I think only dogs and > cats could hear it. > Any thoughts on what the problem is?
You broke it. Seriously, the high pitched whine sounds like your amp is oscillating. I don’t know whether a blow to the 12AX7 can cause that, but tubes should always be checked after a physical blow to an amp. You can pop in a new tube for a few seconds, but if that doesn’t fix it don’t run it until you get it fixed. This may be a good time to consider price of repair vs. a tube amp, such as a used Peavey Classic 30.
Response:
>and then stopped working. Its a little 10 watt Marshall valvestate and it >crashed face down from about 2.5 feet (table height). My first thought was >that the jack for the guitar cable broke inside (this actually happened a >little while ago and I switched in the jack from foot switch) but thats not >the case as it appears intact. The only noise it makes now is an extremely >high pitched whine which is sort of hard to hear because its not that loud >and as I said it is very high up, a little more and I think only dogs and >cats could hear it. >Any thoughts on what the problem is? >Thanks alot.
It’s a valvestate, first of all. That’s your main problem. Something that small and cheap, you can’t really justify a repair on it. They are designed to be throw-away amps. But there might be a chance that all your problem *could* be is a tube, since valvestates use them. try changing those/that and see what happens. If that doesn’t take care of it, unless you are electronically inclined, you probably have to get a new one. –Tony Lostpup198 ‘97 FXSTSB (…and then some!) JAMFHDO #1
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>>Any thoughts on what the problem is?
I believe you have frightened the mojo out of it. If there was a tennis shoe or muscle shirt laying around on the floor near the amp when it fell, the mojo probably migrated there. Try putting the tennis shoe or muscle shirt in the back of the amp. Of course, if this works it will have to be a permanent arrangement, you will have to buy a replacement pair of tennis shoes or muscle shirt, and it will decrease the resale value of the amp. If you had something like a beagle or a hound near the amp when it fell you are probably screwed. Once the mojo goes in there, there is no hope of getting it back out. now you are really screwed http://www.infernalpress.com/Columns/election.html http://www.scoop.co.nz/mason/stories/HL0307/S00065.htm
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– Hide quoted text — Show quoted text ->and then stopped working. Its a little 10 watt Marshall valvestate and it >crashed face down from about 2.5 feet (table height). My first thought was >that the jack for the guitar cable broke inside (this actually happened a >little while ago and I switched in the jack from foot switch) but thats not >the case as it appears intact. The only noise it makes now is an extremely >high pitched whine which is sort of hard to hear because its not that loud >and as I said it is very high up, a little more and I think only dogs and >cats could hear it. >Any thoughts on what the problem is? >Thanks alot. > It’s a valvestate, first of all. That’s your main problem. Something that > small and cheap, you can’t really justify a repair on it. They are designed to > be throw-away amps. But there might be a chance that all your problem *could* > be is a tube, since valvestates use them. try changing those/that and see what > happens. If that doesn’t take care of it, unless you are electronically > inclined, you probably have to get a new one. > –Tony > Lostpup198 > ‘97 FXSTSB (…and then some!) > JAMFHDO #1
It turned out to be the jack again, once I removed the board I was able to see the break. btw there are no tubes in this amp.
Response:
> and then stopped working. Its a little 10 watt Marshall valvestate and it > crashed face down from about 2.5 feet (table height). My first thought was > that the jack for the guitar cable broke inside (this actually happened a > little while ago and I switched in the jack from foot switch) but thats not > the case as it appears intact. The only noise it makes now is an extremely > high pitched whine which is sort of hard to hear because its not that loud > and as I said it is very high up, a little more and I think only dogs and > cats could hear it. > Any thoughts on what the problem is? > Thanks alot.
The suggestions about checking the tube & the more obvious solder connections, inspecting the pcb, etc are good. You may get lucky & find the problem on your own & be succesful repairing it. Sadly, the labor cost to troubleshoot an inexpensive amp like that is hard to justify. If you are so inclined however, you could take this as your opportunity to start learning about these things. Get yourself a multimeter, learn to read schematics & get the troubleshooting flow chart… It may be a lot of time & effort relative to the amp’s value, but could be an interesting project for you that may lead you to bigger & better things. Barring all of the above, maybe you have a friend of a friend who’s a tech? Ask around with the musicians you know. Good luck, Cat
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- Hide quoted text — Show quoted text ->>and then stopped working. Its a little 10 watt Marshall valvestate and it >>crashed face down from about 2.5 feet (table height). My first thought > was >>that the jack for the guitar cable broke inside (this actually happened a >>little while ago and I switched in the jack from foot switch) but thats > not >>the case as it appears intact. The only noise it makes now is an > extremely >>high pitched whine which is sort of hard to hear because its not that > loud >>and as I said it is very high up, a little more and I think only dogs and >>cats could hear it. >>Any thoughts on what the problem is? >>Thanks alot. >It’s a valvestate, first of all. That’s your main problem. Something > that >small and cheap, you can’t really justify a repair on it. They are > designed to >be throw-away amps. But there might be a chance that all your problem > *could* >be is a tube, since valvestates use them. try changing those/that and see > what >happens. If that doesn’t take care of it, unless you are electronically >inclined, you probably have to get a new one. >–Tony >Lostpup198 >’97 FXSTSB (…and then some!) >JAMFHDO #1 > It turned out to be the jack again, once I removed the board I was able to > see the break. > btw there are no tubes in this amp.
Good for you! I thought all "valvestate" amps were hybrids. Cheers, Cat
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>Good for you!
Ditto >I thought all "valvestate" amps were hybrids.
Me, too … go figure. >Cheers, >Cat
Lostpup198 ‘97 FXSTSB (…and then some!) JAMFHDO #1
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heheheheehh! :-) Regards, Margaret
– Hide quoted text — Show quoted text ->>Any thoughts on what the problem is? > I believe you have frightened the mojo out of it. If there was a > tennis shoe or muscle shirt laying around on the floor near the amp > when it fell, the mojo probably migrated there. Try putting the > tennis shoe or muscle shirt in the back of the amp. Of course, if > this works it will have to be a permanent arrangement, you will have > to buy a replacement pair of tennis shoes or muscle shirt, and it will > decrease the resale value of the amp. > If you had something like a beagle or a hound near the amp when it > fell you are probably screwed. Once the mojo goes in there, there is > no hope of getting it back out. > now you are really screwed > http://www.infernalpress.com/Columns/election.html > http://www.scoop.co.nz/mason/stories/HL0307/S00065.htm
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> btw there are no tubes in this amp.
I am neither a fan of, nor an expert on, Valvestates (I own a 2204 JMP). However, the "valve" in Valvestate refers to the "tube" 12AX7 that (to one degree or another) is used to voice the distortion. If Marshall is producing a Valvestate without a tube, I’m even more disappointed in them than I already was (with respect to their current models).
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I had that happen to me with a 100 watt Marshall head that vibrated off a full stack and crashed onto a terazzo floor. (This was before Marshall started using rubber anti-skid strips – apparently someone else had the same problem!) Hit so hard, it shook a couple of tubes out and ripped the chassis loose from the cage nuts that hold it in the box. I straightened out the chassis, bolted it back in the box, replaced the tubes, TURNED IT ON AND PLAYED GUITAR! They don’t make ‘em like they used to, I’ll say that about the oldies! > Any thoughts on what the problem is?
Yeah, I think you done broke it. Looks like a trip to the shop, and hopefully it won’t cost you more than it’s worth. Good luck. ~kp
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> It turned out to be the jack again, once I removed the board I was able to > see the break.
That’s good – easy to fix! > btw there are no tubes in this amp.
Are you sure about that? The whole point of the Valvestate line is that it has a tube and solid state. What is the model number?
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> I believe you have frightened the mojo out of it…
Post of the Week, and most likely, of the Month.
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>> It turned out to be the jack again, once I removed the board I was able to > see the break. >That’s good – easy to fix! > btw there are no tubes in this amp. >Are you sure about that? The whole >point of the Valvestate line is that >it has a tube and solid state. >What is the model number?
I’ve seen a schematic on the 10watt Valvestate. There is no tube. Pete — Well, I guess reality is what you make of it. –Bender
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- Hide quoted text — Show quoted text ->> It turned out to be the jack again, once I removed the board I was able to >> see the break. >That’s good – easy to fix! >> btw there are no tubes in this amp. >Are you sure about that? The whole >point of the Valvestate line is that >it has a tube and solid state. >What is the model number? > I’ve seen a schematic on the 10watt Valvestate. There is no tube. > Pete
MAN! Using a 12AX7 at low voltage is cheesy enough. But to call it a VALVEstate with no tube???
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– Hide quoted text — Show quoted text -> >> It turned out to be the jack again, once I removed the board I was able to > >> see the break. > >That’s good – easy to fix! > >> btw there are no tubes in this amp. > >Are you sure about that? The whole > >point of the Valvestate line is that > >it has a tube and solid state. > >What is the model number? > I’ve seen a schematic on the 10watt Valvestate. There is no tube. > Pete >MAN! Using a 12AX7 at low voltage is cheesy enough. But to call it a VALVEstate >with no tube???
But if you think about it, NOT using a 12AX7 at low voltage is probably an improvement. No matter what they call it. The Solidstatestate. Pete — Well, I guess reality is what you make of it. –Bender
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> I had that happen to me with a 100 watt Marshall head that vibrated off a > full stack and crashed onto a terazzo floor. (This was before Marshall > started using rubber anti-skid strips – apparently someone else had the same > problem!) Hit so hard, it shook a couple of tubes out and ripped the chassis > loose from the cage nuts that hold it in the box. > I straightened out the chassis, bolted it back in the box, replaced the > tubes, TURNED IT ON AND PLAYED GUITAR! They don’t make ‘em like they used > to, I’ll say that about the oldies!
I did an outdoor street party back in ‘74 on the infamous big flatbed, about 4 feet off the pavement. 100w Marshall SL head, 4×12 Marshall cabinet WITH WHEELS, which was stacked on top of another 2×12 Sonic cabinet, lying on its side. You guessed it; the head and 4×12 went over backwards and crashed in the street. It got a couple nasty scuffs, but it was set right back up, and it worked perfectly! Man, was the crew guy who’d set it up there ever sweating as it was warming back up! Zoid z9design.com
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- Hide quoted text — Show quoted text -> >> It turned out to be the jack again, once I removed the board I was able to > >> see the break. > >That’s good – easy to fix! > >> btw there are no tubes in this amp. > >Are you sure about that? The whole > >point of the Valvestate line is that > >it has a tube and solid state. > >What is the model number? > I’ve seen a schematic on the 10watt Valvestate. There is no tube. > Pete >MAN! Using a 12AX7 at low voltage is cheesy enough. But to call it a VALVEstate >with no tube???
Rule: If the letters "valve" or "tube" appear anywhere on the front panel in that order, it ain’t a real tube amp. Ron
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