Problem Naomi rca buzzing

[Sbdesign]

I have a Naomi with real bad buzzing from rca’s
Sound also works
Not tested a different Naomi in machine yet
Tried diff cable

Note: fan is very noisy

Anyone had a similar issue and resolved it.
Thanks

 

[jerryspaghetti]

Mobo fans are often noisy and can be cleaned or swapped out with a quiet one easily.

The buzzing from the audio could be anything on the amp. Check caps are good and solder joints. If you need a replacement for parts I have one knocking around.

 

[Fantazia2]

When you say buzzing from the RCA's do you mean coming out the speakers in the cab?

 

[Sbdesign]

Yes but only when plugged into Naomi rca

I need to try a external source to the amp
But funny feeling it’s a lot of static from Naomi out
Hopefully I’m wrong.

 

[Retroman839]

Or plug Naomi’s phones into another amp.

You could try putting a multi meter on the rca metal outer and see if you got any voltage on it ?
Then check for bad solder joints
Bad caps