02-04-2021, 06:05 AM
The Custom 15 runs the EL84's at full whack, and as you say the old tfmrs were cheap rubbish and prone to over heating, puking wax everywhere. After using it for an hour switch off, pull the mains plug and have a feel of the mains tfmr, cathode R's and other big resistors that might be getting hot. This is one of those jobs for yon fancy heat imaging camera's or failing that MK1 fingers.
Re the hum, did you move on/off SW away from the volume pot? If not you'll always have hum.
Andy.
Re the hum, did you move on/off SW away from the volume pot? If not you'll always have hum.
Andy.
