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Topic: peavey session 400 problem |
Alex Piazza
From:
Arkansas, USA
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Posted 28 Aug 2007 5:34 pm |
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| I just got a session 400 from ebay. The sensitivity knob is very scratchy when you turn it. sometimes the volume is fading in and out, and when it goes low there seems to be a little distortion coming through. It feels like the volume problem is coming from the sensitivity knob for sure. If I just tap the knob a bit once its in place the problem goes away. Has anyone delt with this? |
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Ken Fox
From:
Nashville GA USA
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Posted 28 Aug 2007 6:14 pm
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I did a Sarno mod on an early one and three pots fell out on the bench, cold solder joints! Early wave soldering was poor on these amps. It was corrected later.
Also you could have a dirty pot or a leg broken on the pot that is barely making contact. |
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Alex Piazza
From:
Arkansas, USA
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Posted 28 Aug 2007 6:19 pm
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| Im a little bit of a novice when it comes to amps. How can I figure out exactly what it is? Ive heard that you can get zapped working on a tube amp even when its off. Does the same stand for solid state? |
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Jerry Roller
From:
Van Buren, Arkansas USA
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Posted 28 Aug 2007 6:22 pm
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Alex, how about telling me what part of Arkansas you are in?
Jerry |
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Ken Fox
From:
Nashville GA USA
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Posted 28 Aug 2007 6:24 pm
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I would recommend having a tech look at it. Even cleaning the pots required chassis removal.
I have never been bit by a Session 400 yet. The caps discharge fully shortly after the amp is off. 50 volt DC power supply rails in there for the outputs. A lot more forgiving than 450-700 DC volts on the plates of most tube amps! |
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Alex Piazza
From:
Arkansas, USA
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Posted 28 Aug 2007 7:10 pm
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| Hey jerry, im in little rock. Ive been playing steel for about 4 years and 6 string for about 18 yrs. I play in several local bands and have been able to tour across the country a few times and across the pond a few times as well. being younger has enabled me to tour more often. I geuss i can fake it pretty well, but i would love to get a lesson some day. |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 29 Aug 2007 2:49 am Session 400
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Hello Alex,
My name is Mike Brown and I am a steel guitarist who happens to work for Peavey Electronics in Mississippi. We have authorized service centers all over North America who can assist with the repair of your amplifier. Our website address is www.peavey.com You may also send the chassis only to me here at the factory and our staff technicians will be glad to service your Session 400. It is not a tube amplifier though.............it is all solid state circuitry.
Our factory service center address is;
Peavey Service Center
Attn; Repair Dept.
412 Hwy. 80 East
Meridian, MS 39301
Please include your daytime phone number and a note of symptoms. If you wish to contact me here at the factory, I can be reached toll free at 1-877-732-8391, ext. 1180.
Thanks,
Mike Brown
Peavey USA |
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Rich Weiss
From:
Woodland Hills, CA, USA
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Posted 29 Aug 2007 3:34 pm
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On my Session 400 there is an input in the rear called Power Amp In.
You might try plugging it in there, although you will be bypassing the volume or tone controls on the front of the amp.
I use it this way, and adjust the tone through an external-effects unit. |
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Ken Fox
From:
Nashville GA USA
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Posted 29 Aug 2007 4:33 pm
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| There is not a power amp input in a Session 400. There is one on the Session 400 Limited amp, a much newer amp. |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 5 Sep 2007 6:18 am Session 400
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| We are referring to a 25 year old plus amplifier. It is most likely a broken pot. It will require a technicians attention. |
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David Mullis
From:
Rock Hill, SC
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Posted 5 Sep 2007 6:52 pm
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| Ken Fox wrote: |
| There is not a power amp input in a Session 400. There is one on the Session 400 Limited amp, a much newer amp. |
From what I hear it can be done on a session. My amp tech told me how to do it using a switching jack, but I ain't messed with it yet. |
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Ken Fox
From:
Nashville GA USA
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