I would also try shutting it down and unplugging it from the wall for 5 minutes. Unlikely to help but worth a try. I would have thought a blown tube, but in standby the tube is off so likely not that.
PS Audio BHK300 didn’t work this morning.
Last night everything worked fine, this morning my left mono block was silent and only the blue on/off light was on. I checked everything and found a fuse was blown. I checked all six fuses and found the one to the right of the IEC inlet had blown and I replaced the fuse and all the lights went on and the tubes started to glow, but still no sound. I’m sure it’s not the source, the preamp, cables. It’s definitely something wrong with the amp. When in standby, the amp is normally warm to the touch and this is cold. I sent an email to PS Audio and am waiting for a reply. I also put this question on their forum.
Any thoughts?
Jeez, I hope I don’t have to send this 83# brick back to Colorado!