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Topic: Peavey amp-Loud hum -Won't amplify |
Lee Gustafson
From:
Mohawk Michigan, USA
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Posted 3 Nov 2009 3:07 pm |
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| My Special 130 worked fine. The next day I turned it on and all I get is a loud hum. I can turn any knob, plug or unplug cables,nothing changes. When plugged into my steel, there is no amplification. Any input would be appreciated. |
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Donny Hinson
From:
Glen Burnie, Md. U.S.A.
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Posted 3 Nov 2009 3:11 pm
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| Sounds like a bad internal connection. Since it was working fine the day before, and it does it when nothing is plugged in, I'd suspect one of the molex connectors, or a bad solder joint. |
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Clyde Mattocks
From:
Kinston, North Carolina, USA
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Posted 3 Nov 2009 3:19 pm
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This happened on one of my Session 400's once. It was one of the molex connectors that plug into a circuit board. I cleaned it and re-tensioned it and it was fine.
_________________
LeGrande II, Nash. 112, Fender Twin Tone Master, Session 400, Harlow Dobro, R.Q.Jones Dobro |
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Lee Gustafson
From:
Mohawk Michigan, USA
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Posted 3 Nov 2009 3:26 pm
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| It was working perfect the day before. All I did was mute the TV during the World Series, figured I'd play guitar for a couple minutes, and when I turned it on it just hummed. The amp was never moved. I was hoping it was something simple, like I pushed the wrong button. I was plugged into the low gain the night before to see how my steel sounded on the low plug-in. |
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Jack Stoner
From:
Kansas City, MO
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Posted 4 Nov 2009 3:18 am
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The internal connectors is a good place to start. But, electronic equipment can and will fail. Although most guitar amps are very reliable, like other electronic devices there can be failures and many times it's something "quick" such as yours where it worked and the next time it was turned on it didn't work.
I worked in electronics and computers for my entire working career, including a stint as an amp tech in Nashville. If things never failed I would have had to find a different career. |
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Jerry Overstreet
From:
Louisville Ky
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Posted 4 Nov 2009 6:13 am
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Sounds like time for a visit to the amp doc. Just for fun though, you might try a jumper, plugging a cable between the pwr amp in and pre amp out jacks on the back of the amp.
Unlikely, but it's possible you could have a jack problem on the front panel, but that would probably cause a no sound condition v a hum. It doesn't cost anything to try it though. JMO. |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 4 Nov 2009 2:52 pm amp
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Try plugging your guitar into the POWER AMP IN jack, if you get signal then the power amp is working. If you have a second amp, plug a guitar cable from the PRE AMP OUT jack to the POWER AMP IN jack on the second amp................if you don't get signal through the speaker, then there is something wrong with the preamp section of the amp. You can try this in reverse order to determine if it is a preamp or power amp/speaker problem.
I am in the office from 8 am to 5 pm Mon-Friday should you need assistance.
1-877-732-8391, ext. 1180. |
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Bill Bassett
From:
Papamoa New Zealand
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Posted 6 Nov 2009 4:58 am Funny, I have the same problem
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Same thing happened to my Renown 400. I'll try these same suggestions. The darn thing has just been sitting in the back room for the past few months.
BDBassett
Rimrock AZ |
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Ken Fox
From:
Nashville GA USA
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Posted 6 Nov 2009 5:26 am
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Like Mike said! This is a most common problem on any brand of amp with effects loop jacks. I had a newer Ampeg in the other day, same problem. Sometimes best to just get a 6" or 12" guitar cable and loop the jacks together. There are two sets on the N-400 that can be jumpered out to check the amp. The front Pre EQ in/out and on the rear the pre amp out and power amp input.
Last edited by Ken Fox on 6 Nov 2009 6:39 am; edited 1 time in total |
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Mike Brown
From:
Meridian, Mississippi USA
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