cheers for replies guys....

blitz..don't think its the volume knob as its a new one and have got a noise from speaker...
rob..tried wiggling those boards about and apart from one single burst of noise as i picked up board can't get anything...
wacky..it would be entirely possible for me to connect speaker to smoker socket but i know i haven,t (this time)..! tried the speaker on a battery and got a noise and also had the one single noise from speaker so that should be ok..not sure what the wiper thingy is..? is it the black shiney blob on back of cards..? tried the 3 wire data cable and have had a general poke/prod/wriggle about of things but nada...![:@]
starting to think its the replacement board i put in which will now probably be replaced with another replacement..!![:@][:@]
they've about doubled in price too since last i had to buy one..?!
cheers, rgds stuart