[r0b]

Dan, thanks for all the details and pics! My F112 (v1) died about a week ago, leading me to search online. I found posts from others complaining about similar issues. However only your post had sufficient info for me to attempt this on my own.

I also had trouble removing the amp, but the M6 machine screws did the trick! I only needed one and the amp came out enough for me to do the rest.

Once the amp was on my workbench, I removed the hex bolts holding the PCB and the power transistors, but the PCB was still stuck. Turns out there is some black mushy material (silicon caulking?) on the large capacitors that hold it to the metal. Slicing it near the metal freed it.

I did not have an ESR device, so I ended up changing both caps that you referenced from Mouser. I double checked my work and put everything back together including the cable ties that hold the wires in place.

I plugged the amp back in and attached a few screws to hold it in place. I plugged in the power cable and it turned back on! My amp was finally on again! Big sigh of relief.

At this point, I heard some ground noise I never heard before. I don’t know why, but figured maybe something else had also gone wrong. Since the hum was mild, I figured it should be fine from in my listening chair. I unplugged power, finished securing all the screws, then moved the sub back into its place. I plugged in the source RCAs and the power cable. The ground hum was now gone... no idea about this one.

I played a few tracks and all was well!

Oddly, I became somewhat accustomed to listening without the sub, and realized I had its level higher than necessary. I adjusted it slightly down and now the bass transitions smoothly from my Olympica III’s to the sub bass of the F112.

Very happy this repair went so smoothly. Thanks again Dan!