Egnater Tourmaster 4100 Tube Amp Head ~ No volume?

[jonsix]

Well my Tourmasters current problem is no sound coming from the amp. Ive tried different cabs, guitars, cords, and power sources. I've done some tube swapping and I'm no closer to diagnosing the problem. Was wondering if anyone knows of a simple solution I'm just not thinking of.

Can't afford to keep bringing my amp into the shop every month. Since I got this amp a year ago I've already put nearly $600 in repairs into it. Recently the fuse kept blowing and the amp wouldn't turn on. Turned out to be nothing big but still pricey. Ive also had the transformer replaced.

I only use Egnater amps. I own the cheaper Renegade and Tweaker and they've never had any problems. Then I broke the bank and got what I thought was my "end all be all" amp of the Gods. This amps been a nightmare. Maybe I just got a dud

Thanks, Jonathan

 

[Flyer91]

Have you tried different power grid settings?
With and without the footswitch?

I've attached the schematics for the 4100, hopefully that might help.


If you have access to an audio signal generator and an O-scope, you can use the half split method to quickly zero in on the issue.
You simply inject a signal from the generator into the input of the amp, then touch the O-scope probe to the signal line midway between the input and output .
If you have a signal, then go half way from there to the output.
If no signal, go half way from there to the input ... etc.
This will quickly dial you into where the signal is not being passed.

Good luck!!

 

[jonsix]

listened close to my cabs through the Tourmaster and I can hear a very faint hum. everything appears to be working except the guitar input. cleaned the 2 inputs and tried both Low and High inputs and still nothing.

also when i flip the standby switch to ON mode i hear immediately following a odd sound from within the amp. like a BZRTT! sound that only happens once then its gone.

 

[jonsix]

im dumb when it comes to schematics. and i don't have any of those tools. at this point if i costs more than $20 to fix I'm probably gonna throw it in my closet forever and just take my $2000 loss like a man. haha

 

[jonsix]

Is this guy Bruce Egnater actually associated with Egnater?

 

[Dopethrone]

Is this guy Bruce Egnater actually associated with Egnater?

yep he's the owner.

you can message him here, he's pretty prompt and helpful.

 

[Bluezman]

I have a similar problem with my Tourmaster amplifier. No input sound, but get sound when I plug guitar in effects loop return. I recently replaced the shot power transformer, and had the amp working, all but the reverb. It also would cut out sound if I tapped the top of amplifier or pushed on valve one on the amp, it would lose sound, then come back. So I put it back on bench, soldered a few bad solder joints on the tube sockets. I noticed that the board that hold valve one and two, seems to maybe the issue? Can't figure it out, changed numerous tubes, nothing. I'm thinking of taking the small board out to look inspected the other side of it. May have issue with the registor R16, is that supposed to be soldered in the plate socket, or independent. I don't have a Schematic to see? I all have zero reverb too. I want to get this amp running again. Sunk money into it, now I'm scratching my head?