Roberts R66

[ppppenguin]

You should replace ALL the paper caps. For example leakage in C14 will wreck the AGC, though leakage in C22, C16, C5 (screen decouplers) probably won't make much difference. The big LT smoothers (C29,30,31) all 2500uF may all be below par, resulting in hum. For neastest results the modern 2200uF replacements can be hidden in the old cans.

By chance I have an R66 which I'm taking to Harpenden on 3rd March to sell. It all looks untouched (I certainly haven't touched the innards), the case would come up nicely with some red shoe dye.