Carvin XP800L Mixer/Amp no sound

Hello Repairs
l have the above PA Amplifier come mixer in workshop.
someone donated to club after two power supply 
blew  up.  Have got power back up but no sound.
Ccct Ref;T1 one coil o/c and am  looking for a replacement.
Have Carvin Part Number but no hits so far.
Any advise appreciated 
Fulco