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March 2006
Posts: 1634
Location: Chehalis, Washington | I just got a Marshall valvestate VS65R on ebay, and it seems to have a buzz somewhere in it when I turn it on. Doesn't matter if I have the guitar plugged in or not, there is just a steady buzz/hum coming from somewhere.
My bass player/technical guy thinks it might have a loose ground or bad sauder somewhere inside. Any ideas or suggestions? |
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Joined:
November 2004
Posts: 382
Location: USA | It could be quite a few things...
It could your guitar...Does it stop when you hold the strings???
It could be an internal wire to your jack...
It could be a bad guitar cable...
It could be your pickups...
does the guitar do this in another amp...
My guess is its not the amp...I could be wrong...But those suckers are tough.
It may need a good cleaning....
lol...sorry...read it does it regardless if the guitar is plugged in...somehow I read over that...
Check your fuses...Check your grounds...also try replacing the electrolytic caps...
http://www.myspace.com/styllheartandsoul |
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Joined:
March 2006
Posts: 1634
Location: Chehalis, Washington | It's not the guitar or the cable - it does it when nothing is plugged in. Plus, I play the same guitar through a master sound system directly an never have any trouble.
Thanks for the ideas. I'll probably just pull the thing apart and have a look. :eek: |
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November 2004
Posts: 382
Location: USA | or give them a call... |
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October 2005
Posts: 803
Location: Avondale, AZ | My Marshall MG100hdfx has a fan that runs constantly when the amp is on. It is quiet and only can be heard when I am not playing. The sound comes from the back of the head. |
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February 2006
Posts: 140
| Sounds like a grounding problem. Does the "on" switch have a reverse polarity? |
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June 2005
Posts: 231
Location: N.J. | Eden,
Try lifting the ground on the plug and see if that quiets it down. Could be anything from a bad cap to a cold solder joint to a loose wire.Unless you know what your doing I would be real careful inside there. Even though your unplugged the transformer still has enough juice in it for a rude awakening! :eek: |
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August 2002
Posts: 8307
Location: Tennessee | Maybe it was previously used by an emo band? They always like to play with a buzz going.
Sleepy Eyes gives good advice. Unless you've been there and done that, stay away. Find a local amp tech and let them have a look at it. |
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Joined:
July 2002
Posts: 1900
| Edensh, If there's not a reverse polarity on the "ON" switch, then there's an 'open nuetral' somehwere in the circuit which produces a 60 cycle hum. Have a technician trouble shoot it, should be easy to find. |
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Joined:
March 2006
Posts: 1634
Location: Chehalis, Washington | Thanks guys,
Guess I'll have someone else take a look at it who knows instead of poking around myself. |
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December 2003
Posts: 13996
Location: Upper Left USA | I can take it apart for you!
No promises after that though. |
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April 2003
Posts: 183
Location: Denver, PA USA | I had that problem it was the wiring in my house. I got a filter for it and it went away. My friends fender amp does it at church. Got a Carvin power conditioner. http://www.carvin.com/products/single.php?ItemNumber=AC120&CID=PROC
Solved the problem. |
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Joined:
October 2005
Posts: 4072
Location: Utah | Also, it could be your outlet. Try plugging it into a different room, or better yet try a different house. If your outlet is wired wrong it might be the problem.
My guess is that it is an internal grounding problem. There are a lot of places that the problem could hide, but it could be very obvious. But you shouldn't poke around unless you know what you are doing. Just taking the cover off and looking inside might reveal a broken wire or something else obvious.
How old is this amp? What is the technology? Some semiconductors can be destroyed by static on your fingers that you can't even feel when it discharges, so you have to be really careful not to do damage. |
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Help! Anyone know about Marshall amps?
