WRF,
First and formost thank you Very kindly, Love learning from other Carver people.
A.) Problem, Volume at 0db is Equel to-20 / -25 dB all across the board at all inputs.
B.) Opened the Unit there is a CPU fan but do not know if that only turns on under load like the older Techice receivers and if it could have a saftey build in if the fan is shot.
It is a 12V DC fan measure when starting up the unit but no voltage.
Caps at Power supply C17 & C18
seem questionable, plastic ends are a little bulged.
Measure them with my Signstek MESR-100 V2 seems to be good, but flux all over.
Sorry for the lengthy reply.