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Need an answer from Bbblyd

#81
JellinWellen said:
I set my amp that way to get the power tubes to distort slightly, not for clean volume. Its actually quieter to do that on my amp. Whenever I do that the pickup noise is gone, for example:

OD channel
Gain 12 o clock
master 12 o clock
The pickup noise is very present

OD channel
Gain on 7 o clock (very low)
Master dimed
Slightly more noise from the amp, but no noise from the pickups on my bass.
But when I run it like this, my mute button doesnt mute the signal all the way anymore.

Thats what leads me to believe the problem lies in the preamp section of my amp.
Click to expand...

And the bass does not make this weird pickup noise thing with any other amps you've tried?

It may seem like the higher gain (input volume setting) might be injecting more noise from a noisy bass into the amp, but then it would do it with other amps too.

B-string and others would know better than me, but it wouldn't hurt to look for a bad ground/broken board trace at the input of the amp?
 
#87
BbbyBld said:
To be honest, I don't even remember why the amp was sent back the first time or what the complaint is now. From what I've been told, there was nothing wrong with it the first time in. The tech. burned it in for a day and played bass through it. This particular tech. is probably the best there, but he's not really a bass player, so maybe something was overlooked that an actual bass player would pick up on.

These are built to order, so there may not be a new one in stock to send out at the moment. The assembly line is reconfigured depending on what's scheduled for production on a given day. At the same time, Peavey manufactures the whole amp, so the chassis from the metal shop, cabinet from the wood shop, circuit boards from the PCB line, etc... must be ready before assembly. Most likely, the option with the fastest turn around time was offered. Also, in these situations (repeat offender, upset customer) service turn around is usually expedited.
Click to expand...

I'm just going to say it - it would be worthwhile for someone experienced to watch the OP operate this amp. I suspect OE.
 
#89
AlexanderB said:
The issues I have are not related to user error, bad linevoltage, instrument etc.
Click to expand...

Well, could be a couple bad ones, then. Mine was fine - and a bargain.

PeavyVB2tb_zps4a94092a.jpg
 
#91
What about the loud rattling? It seems to be coming from the transformer by the preamp tubes. I've tried putting the amp on the floor/thick towel under the amp but its still pretty noticeable.
Click to expand...

If you are hearing a rattling noise, you have a loose or missing screw. The transformer near the preamp tubes is the output transformer. I hate to say it, but one of the screws used to mount one of the power amp PCB standoffs is sometimes forgotten about in final assembly because it's sort of hidden underneath the output transformer wires. There is also a grommet used to protect the output transformer wires that may become loose and rattle. That kind of annoyance is easy to fix.

If you are hearing a snap noise from your bass when you touch strings or pickups, sounds like you are plugging the amp into a power outlet without a proper ground.
 
#92
BbbyBld said:
If you are hearing a rattling noise, you have a loose or missing screw. The transformer near the preamp tubes is the output transformer. I hate to say it, but one of the screws used to mount one of the power amp PCB standoffs is sometimes forgotten about in final assembly because it's sort of hidden underneath the output transformer wires. There is also a grommet used to protect the output transformer wires that may become loose and rattle. That kind of annoyance is easy to fix.

If you are hearing a snap noise from your bass when you touch strings or pickups, sounds like you are plugging the amp into a power outlet without a proper ground.
Click to expand...

I used to work doing assembly on welding gun parts, stuff gets forgotten it happens. As for the noise it's only when my hands are near or touching the pickups (pole peices or if I touch the plastic covers) and is absent when I'm touching something metal on the bass. But this is only present when the amplifiers gain is above around 8 o clock.
 
#93
Caveat: Taking the amp apart yourself could void any warranties you may have.


That said, I would want to get in there and find thst screw or whatever it is that's loose in there. If it comes out or lands in a bad spot, it could arc across things that are not supposed to be connected together and cause some real problems.
 
#94
I used to work doing assembly on welding gun parts, stuff gets forgotten it happens.
Click to expand...

If I'm right about the screw, it's visible without having to remove the chassis. It's right underneath the output transformer (the smaller xfrmr) wire bundle.

As for the noise it's only when my hands are near or touching the pickups (pole peices or if I touch the plastic covers) and is absent when I'm touching something metal on the bass. But this is only present when the amplifiers gain is above around 8 o clock.
Click to expand...

This could be because of the high input impedance and gain of the amp. High input impedance and gain ensures you don't lose subtleties in your playing, but sometimes you pick up things you don't want.

I don't want to make excuses for the amp, or convince you that you don't know what you're talking about. If you think something is up, send it back. I just discussed your situation with the head of service again this morning.
 
#95
BbbyBld said:
If I'm right about the screw, it's visible without having to remove the chassis. It's right underneath the output transformer (the smaller xfrmr) wire bundle.



This could be because of the high input impedance and gain of the amp. High input impedance and gain ensures you don't lose subtleties in your playing, but sometimes you pick up things you don't want.

I don't want to make excuses for the amp, or convince you that you don't know what you're talking about. If you think something is up, send it back. I just discussed your situation with the head of service again this morning.
Click to expand...

Thank you, I'll be sending it Monday most likely. One last thing, If I have the master up around say 3 o clock or higher, is it normal for the mute switch to no longer mute the signal completely?
 

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