Regrettably the vast majority of HT electronics are Chi-fi disposables with an estimated reliability life mirroring the warranty period. ARCAM also moved it's top AVR production out of China back to the UK a few years back.
I also had a top CAMBRIDGE AVR that required warranty repairs to fix certain Chi Fi manufacturing Build quality issues. I eventually migrated to UK high-end separates .
This is an old model with known motherboard issues identified a decade ago without prejudice to the fact that it also well past it's sunset period
Your time to replace or upgrade the AVR is here.
I also had a top CAMBRIDGE AVR that required warranty repairs to fix certain Chi Fi manufacturing Build quality issues. I eventually migrated to UK high-end separates .
This is an old model with known motherboard issues identified a decade ago without prejudice to the fact that it also well past it's sunset period
Your time to replace or upgrade the AVR is here.