Peavey Session 500 Volume Pedal Patch

John Floyd · Post by **John Floyd** » 9 Nov 2003 2:59 am

Has anyone accidentally plugged Their PSG directly to the send jack for the volume pedal patch?

I had a friend (who will remain nameless, to avoid embarrassment to him) who was in a hurry to get set up at a gig and did this by accident.

The guitar was a Mullen Royal Precision and When the error was discovered and corrected, the E9th neck had no sound output from the pickup.

Upon Checking the pickup with a Meter, the pickup was found to be open. He had the pickup rewound and the tech who rewound the pickup found a burned winding inside the pickup itself.

This happened a couple of years ago and was just thinking about it and wonder if anyone else has ever done this.

My advice is to use caution when using the three wire patch with Peavey Steel Guitar amps. This might not happen on other Brands of guitars or pickups. I'm not sure what gauge wire is used in Mullen pickups or if this was just an isolated incident.

This should not be taken as Peavey bashing, as I am a user and supporter of Peavey amps and products.

Just being curious.

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Mike Brown · Post by **Mike Brown** » 10 Nov 2003 9:32 am

John, this is the first that I have heard of something like this and we appreciate the warning. Perhaps the amp was powered up when this happened?

John Floyd · Post by **John Floyd** » 10 Nov 2003 11:56 am

Mike
It was powered up.
I'm certain of that

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Mike Brown · Post by **Mike Brown** » 10 Nov 2003 2:28 pm

I don't know if that might be related or just a coincidence but always try to make it a habit to have all electronic gear unplugged from the wall when making connections. The difference in ground potential can cause major failures.

Keith Hilton · Post by **Keith Hilton** » 12 Nov 2003 1:21 pm

I really don't see how something like this could happen--"IF"--the Peavey amp had the orginal ground plug. Many times ground plugs somehow get removed over the years. If the amp is not grounded anything is possible. My question is this, "Did the Peavey amp in question have the ground plug on the power cord?" Even if the power cord had a ground plug, many wall recepticals are not grounded.
This means you could be in parallel with all kind of electrical devices in a circuit before the current gets to a ground. It is possible to even be in parallel with your neighbor's house. Sometimes ground wires on entrance meter loops get cut with lawn mowers.

Donny Hinson · Post by **Donny Hinson** » 12 Nov 2003 4:48 pm

It's easy to understand how it could happen. It doesn't take much voltage and current to "burn out" a piece of #42 wire. I've heard of players mistakenly plugging into a speaker jack, and doing the same thing. I guess the bottom line is if you're dealing with both input and output jacks...you'd better be doing it right!