on my first TS-4 every cap and high value resistor was changed. The rest were checked for tolerence. Once warmed up it'll even play a Betamax without "flag waving". Since the TS-18 is in such poor shape, I hope to track this problem down once and for all.
While I'm asking questions, years ago the Motorola factory tech said that once these little sets horizontal frequency "went south" nothing could get it back. When he died I bought the five sets from the Motorola distributor. One of them had the terminal strips all cut to separate them and hacksaw cuts in the base of the CRT between pins. I tried the CRT in my other TS-4 and it gives a good picture. This TS-18 is in that lot. Has anyone had the horizontal frequency fight them like he described? Like I said, it's a real mess! At least the high voltage bit me good last night!
I have a good deal of the update literature from Motorola and there is no mention of the horizontal going so far off value that it posed a severe problem.