6 replies to this topic

[FtJackson]

I have a CT810 that hums.    
You can hear the amp hum with no inputs or outputs.
It does transfer the hum to the outputs if it's hooked up.

I checked for anything loose inside and found nothing.

Could this be the main transformer?

What else might I check?

Is there a Troubleshooting Chart for this amp?

[Bradford Benn]

You may want to see if the problem occurs on another outlet, perhaps you have a bad ground on the outlet you are using.

[FtJackson]

The outlet is good.

[FtJackson]

Resolved by swapping the main transformer from a fried amp.

[DGlass]

Resolved by swapping the main transformer from a fried amp.

It sounds like a winding in the transformer became delaminated and the noise was from the mechanical vibration

[FtJackson]

Resolved by swapping the main transformer from a fried amp.

It sounds like a winding in the transformer became delaminated and the noise was from the mechanical vibration

Can this be fixed or is is lost.

[DGlass]

Resolved by swapping the main transformer from a fried amp.

It sounds like a winding in the transformer became delaminated and the noise was from the mechanical vibration

Can this be fixed or is is lost.

Sorry, there's no easy way to rewind a transformer and fix it. They are cheaper to replace.