Nash 400 cutting out

Steel guitar amplifiers, effects, etc.

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John Knight
Posts: 310
Joined: 25 Jan 2001 1:01 am
Location: Alaska

Nash 400 cutting out

Post by John Knight »

This problem drives you nuts. Intermitten cuts in sound. Is this part of the molex connector problem with the reverb?

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D 10 Thomas with 8&6, '61'D-10 Sho-Bud 8&3
S12 Knight 6&4
Nashville 400 and Profex II
81' Fender Twin JBL's
Asleep at the Steel


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George McLellan
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Joined: 4 Aug 1998 11:00 pm
Location: Duluth, MN USA

Post by George McLellan »

John, mine did the same thing and Mike Brown told me to use a jumper from the two jacs in the back of the amp. That solved the problem. Apparantly the points on one of the jacs (I've forgotten which one it is) corrodes a little and that's what causes it. Give it a try.

Geo
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Jack Stoner
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Joined: 3 Dec 1999 1:01 am
Location: Kansas City, MO

Post by Jack Stoner »

There are two jack points that could potentially cause problems. The input/return jack for the Effects loop and the Power Amp in jack on the rear. These two jacks have a "normal through" contact so that, for example the preamp out to power amp in connection is made through the "normal through" When you plug in a jack from a preamp or whatever that you want to run direct to the Power amp then the Nashville 400's preamp is disconnected from the circuit.

Run a jumper cable (guitar cable) from the Effects loop out/send to the Effects loop in/return and see if that is causing the problem. If not, try the preamp out/power amp in as previously suggested.

If that doesn't do it, then there is something else internally. A band "Molex" connector for the reverb will not cause the entire amp to cut in and out.

ADDED: One other issue. If you have one of the older Nashville 400's that still has the molex connector for the speaker connections, remove the Molex connector and solder the speaker wires directly to the Molex pins. This was an Engineering Change that Peavey did on the amps and from talking to Mike Brown this should be done to older amps that still have the Molex connector.<font size="1" color="#8e236b"><p align="center">[This message was edited by Jack Stoner on 10 March 2006 at 03:05 PM.]</p></FONT>
John Knight
Posts: 310
Joined: 25 Jan 2001 1:01 am
Location: Alaska

Post by John Knight »

Thanks guys, I will give it a shot

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D 10 Thomas with 8&6, '61'D-10 Sho-Bud 8&3
S12 Knight 6&4
Nashville 400 and Profex II
81' Fender Twin JBL's
Asleep at the Steel


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Blake Hawkins
Posts: 1844
Joined: 4 Aug 1998 11:00 pm
Location: Florida

Post by Blake Hawkins »

To help prevent a recurrence of the problem,
it's a good idea to "exercise" the jacks mentioned by Jack Stoner.
Every few months just insert and remove a plug a few times.
This moves the switch contacts and helps to prevent them from getting dirty.
I do it about every three months or so.

Blake
LARRY COLE
Posts: 943
Joined: 16 Feb 2000 1:01 am
Location: LANCASTER, OHIO, USA

Post by LARRY COLE »

I changed the power amp in jack on the back to a Switchcraft jack and haven't had a problem since. The plating on Switchcraft brand connectors does not corrode or tarnish like other brands.

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Playing For JESUS,LC. WILLIAMS U12,SHO-BUD PRO1,CARVIN TL60,GIBSON LES PAUL CUSTOM,YAMAHA L-10A ACOUSTIC,ROLAND JW-50 KEYBOARD,G&L AND BC RICH BASS'S


James Quackenbush
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Joined: 27 Sep 2002 12:01 am
Location: Pomona, New York, USA

Post by James Quackenbush »

This is a common problem with effects loops if they're not used very often ....It's not just with Peavey .....Jim
Mike Brown
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Joined: 4 Aug 1998 11:00 pm
Location: Meridian, Mississippi USA

Post by Mike Brown »

John, call me toll free tomorrow or at your convenience and I will be glad to assist you. Maybe we can figure it out by phone and take the appropriate action. My phone number is 1-877-732-8391, ext. 1180 and I am in the office from 8am to 5pm CST the remainder of the week. I look forward to your call.

Mike Brown
Peavey Electronics Corporation
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