Hum

farout

I have a hum coming through my speakers when cd is turned on. Anything i should try?

sovereign

Change the CD,

Sorry that was rubbish

farout

Thanks Sovereign lol

Suzy6toes

James, shame on you! Esp after i resisted suggesting meditation :-D

cj66

Let it hum a little longer and you'll get the tune!

***serious mode on***
Is the CD player new to you? Has anything changed since it didn't hum? Check the interconnects. Try CD player on another amp if possible, if it still hums it's your CD player causing it.
***serious mode off***

p.s. try the radio, see if it's whistling!

farout

Wondering if my pre amp is sensitive to it,as is didnt hum through my other amp. The cd player doesnt have an earth so would that be an issue for my pre? If so how could i get around it?

uglymusic

Your CD player doesn't have an earth, or it isn't connected?

farout

uglymusic said:

Your CD player doesn't have an earth, or it isn't connected?

No earth wire

AntiCrap

Is the CD player on top of the pre-amp?

farout

AntiCrap said:

Is the CD player on top of the pre-amp?

Hi Col no i got it on a separate shelf

cj66

Where is it plugged into the mains, relative to the pre and power amps?

farout

I got them all running into a mains distribution block

AntiCrap

Check screen cables, or the pre has lost a return/stroke earth signal. Or much worse it broken and there is a hum loop maybe power caps etc nafff.

farout

Yeah it only hums on cd not turntable,i bringing up to you to soon to upgrade few components in it for me so you can check

cj66

farout said:

I got them all running into a mains distribution block

I have often expereinced installs where either the source or the pre-amp object to this arrangement. I assume it being transformer hum from the power amp being picked up by the source/pre.

farout

Yeah it only happens when i turn selector to cd