Thats a nice clean set !
Anyhows the SAMS will have subs for the transistors on the MAD
& other boards. BTW sometimes the MAD boards are encapsulated.
All red pix is either G-2 too high or red K too low. Possibly set-up
or CRT also. A few measurements point the way.
Tuner number starts with KRK### Start with a good cleaning.
Pull the cover & just put cleaner on the contacts. We used to use
WD40 then douche it out with freon then lube it. RCA tuners often completely
quit when dirty.
The symptom of good UHF snow / bad VHF snow usually the VHF osc
if cleaning dont help.
A word about RCA part numbers.
1) six digit part number. Almost never on the part but the final number.
2) assembly numbers. 3 letters then 3 numbers. Like MAD001 etc.
3) drawing number. Often on the parts. long number ends in -###
Most of the time SAMS has everything.
73 Zeno
LFOD !