Anyone here have a schematic?

[K-Bizzle]

Of the RM100?

The boards on my Randall are branded as egnator with an 04 date.
SO anyone have a schematic of this?

I'm having some trouble with my amp, and I'd like to attempt to trouble shoot it on my own.

I first swapped out all the tubes and fuses, then tested all the internal fuses, then check all the internal connections and looked for any obvious burned/bad parts and nothing.

I'm guessing it may be the output transformer, but I really, really hope not. I'm probably going to try to test it tonight.

But if anyone has a link or could pm me a schematic I'd appreciate it, thanks.

 

[K-Bizzle]

 

[Jeff Hilligan]

Whats wrong with it?

 

[K-Bizzle]

Basically I've got no output to speak of.

Not even a hum.

Could be the rectifier maybe?

I'm also getting 0 mA on the bias points if that tells you anything. The filaments are all lit, so I suppose I should test the voltage on the plate?

I'm quite the n00b when it comes to tubes but from what I've read pin 8 on the tube is B+. So should I test the DC voltage between pin 8 and the chasis?

 

[trey85stang]

Basically I've got no output to speak of.

Not even a hum.

Could be the rectifier maybe?

I'm also getting 0 mA on the bias points if that tells you anything. The filaments are all lit, so I suppose I should test the voltage on the plate?

I'm quite the n00b when it comes to tubes but from what I've read pin 8 on the tube is B+. So should I test the DC voltage between pin 8 and the chasis?

pin8 is where you would measure you bias (with a 1ohm resistor to ground)... Your b+ would go to pin3.

 

[Mick]

If a rectifier goes so does the main fuse.

Check all fuses, I would suggest. Most of the time a broken output tube takes the B+ fuse with her.
Be careful measuring inside the amp!!!

Mick

 

[K-Bizzle]

Basically I've got no output to speak of.

Not even a hum.

Could be the rectifier maybe?

I'm also getting 0 mA on the bias points if that tells you anything. The filaments are all lit, so I suppose I should test the voltage on the plate?

I'm quite the n00b when it comes to tubes but from what I've read pin 8 on the tube is B+. So should I test the DC voltage between pin 8 and the chasis?

pin8 is where you would measure you bias (with a 1ohm resistor to ground)... Your b+ would go to pin3.

Really?
Hmm the data sheet I've got on 6L6 must have some incorrect markings then.

 

[K-Bizzle]

If a rectifier goes so does the main fuse.

Check all fuses, I would suggest. Most of the time a broken output tube takes the B+ fuse with her.
Be careful measuring inside the amp!!!

Mick

I have checked all the internal fuses I can easily find/have access to without pulling things apart.

I brought it with me to work today, I think the guys here will be able to help me.

 

[K-Bizzle]

This just in F1G and F2G (underneath the midi board) were both blown.

I'll be replacing these as well as testing the rectifier that is side mounted, as well as the rectifier circuit thats near said fuses.

With the tubes out of the amp, I should be alright turning it on right? Just to test the plate voltage to know if its the power supply or not?

 

[K-Bizzle]

with the fuses replaced I've got plate voltage now(started it up with tubes pulled and no guitar or speakers connected just to test power supply).

So unless the blown fuses are a symptom of something else wrong, my only problem was 2 bad fuses.

Wish I had better lighting in my band room so I would have noticed them before bringing it into work.