jimbo
jaded asshole
Posts: 1,524
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Post by jimbo on Oct 2, 2011 22:08:10 GMT -5
I was gonna post this in amp talk but decided "fuck it".
I went to play my vtm 120 today for the first time in about a month. I turn it on, get my guitar tuned up and whatnot, and I flip the standby switch, and the "status" light doesn't come on (off means its in standby and on means its on "on"). The power light is on, but it wont come out of standby.
No sound, not even any noise or hum. All the tubes are lit up. Could not figure out through all my troubleshooting (without opening it up).
Anybody got any ideas on whats going on?
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Post by emp1reinru1n on Oct 2, 2011 22:14:38 GMT -5
I had an issue similar to that, except both lights wouldn't come on. I took it too a local shop and the guy said he had to re-sauter the circuit board. He said it was cheaply done by a machine (bugera 333, made by behringer. go figure.)
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jimbo
jaded asshole
Posts: 1,524
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Post by jimbo on Oct 2, 2011 22:36:22 GMT -5
I had an issue similar to that, except both lights wouldn't come on. I took it too a local shop and the guy said he had to re-sauter the circuit board. He said it was cheaply done by a machine (bugera 333, made by behringer. go figure.) this amp is 30 years old. I don't think the issue is a machine sautered cheap circuit board. Vintage peavey>behringer quality wise. I'll keep that in mind though thanks. |
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Post by TerribleCj on Oct 3, 2011 4:56:22 GMT -5
Sounds like the standby switch itself has gone bad. This is fairly common these days in amps made in the 70's and older. Happened several times with my twin and once with my peavey mace. Its usually a cheap fix. If everything else seems normal and theres no smoking or bad smells or crazy noises then the amp is probably fine other than a switch replacement.
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Parker
seeker of the truth
Posts: 425
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Post by Parker on Oct 3, 2011 12:33:25 GMT -5
Standby fuse probably blew. 3 dollar fix.
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jimbo
jaded asshole
Posts: 1,524
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Post by jimbo on Oct 3, 2011 15:41:17 GMT -5
Standby fuse probably blew. 3 dollar fix. the easily accessed fuse (one you can reach from the back without opening up the amp) is fine. there aren't any other fuses readily available to check unless I pull out the chassis, which I'm not sure I should do since I've never opened up an amp before. Anybody ever pulled the chassis out of a vtm or similar peavey that can guide me so I don't electricute myself or ruin the whole circuit? |
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Post by forget it on Oct 3, 2011 16:41:19 GMT -5
when i sold that VTM to you, the filtercaps were old as shit, and if you play anywhere near as much as i do, i'm surprised they lasted as long as they did.
This would be your worst case scenario.
but i agree with parker, must be the standby fuse, which yes will have to be accessed by sliding the whole bastard out of the head case. its not that hard, just be sure to be careful of the tubes.
if i remember correctly the fuse is really close to the switch itself.
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Post by joshjoshjosh on Oct 3, 2011 18:32:40 GMT -5
which I'm not sure I should do since I've never opened up an amp before. considering this... i think you really should just take your amp to a qualified tech... if your standby switch isnt working, then you really dont even have an effective (for someone who has never opened up an amp, that is) way to discharge your filter caps , which carry potentially lethal voltages. Worst case scenario, you take the amp to a tech and he charges you a small fee to diagnose the amp, then after knowing whats wrong, if the cost to repair the amp is too much, then you know its something you couldnt fix anyways. It really isnt worth the potential risks involved to try and do it yourself if you arent experienced. |
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jimbo
jaded asshole
Posts: 1,524
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Post by jimbo on Oct 4, 2011 7:44:52 GMT -5
which I'm not sure I should do since I've never opened up an amp before. considering this... i think you really should just take your amp to a qualified tech... if your standby switch isnt working, then you really dont even have an effective (for someone who has never opened up an amp, that is) way to discharge your filter caps , which carry potentially lethal voltages. Worst case scenario, you take the amp to a tech and he charges you a small fee to diagnose the amp, then after knowing whats wrong, if the cost to repair the amp is too much, then you know its something you couldnt fix anyways. It really isnt worth the potential risks involved to try and do it yourself if you arent experienced. I agree |
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Parker
seeker of the truth
Posts: 425
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Post by Parker on Oct 4, 2011 21:05:56 GMT -5
which I'm not sure I should do since I've never opened up an amp before. considering this... i think you really should just take your amp to a qualified tech... if your standby switch isnt working, then you really dont even have an effective (for someone who has never opened up an amp, that is) way to discharge your filter caps , which carry potentially lethal voltages. Worst case scenario, you take the amp to a tech and he charges you a small fee to diagnose the amp, then after knowing whats wrong, if the cost to repair the amp is too much, then you know its something you couldnt fix anyways. It really isnt worth the potential risks involved to try and do it yourself if you arent experienced. SAYS THE WIMP |
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Parker
seeker of the truth
Posts: 425
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Post by Parker on Oct 19, 2011 11:03:30 GMT -5
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Post by joshjoshjosh on Oct 19, 2011 12:23:31 GMT -5
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Post by forget it on Oct 19, 2011 17:45:35 GMT -5
THAT FUCKING RULES! and its cheap. holy shit i want one.
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