[Electronic M]

Yes they do not make capacitor replacement kits for these, but the sam's does have a capacitors section in the parts list. The first 1-about 10 caps will be electrolytics, and will have values between 1 and 500uF and will be rated to handle roughly 10-500V. Replace with a new cap with as much as a 20% (smaller is better) capacitance value difference (if the exact value is unavailable/expensive) and the same or higher voltage rating. The next caps are a mix of types that are virtually immortal, and ones that are usually bad. The bad types will be listed as something like .5 to .0001 and the good ones will be listed as two to four digits like 3900. These you want to try to get as close to value on as feasible, and the same advice on voltage as above is applicable. It is often better to 'shotgun' replace all those caps than troubleshoot individual failures, however since it has been powered on safely I recommend replacing 1-5 at a time and powering up between to check for mistakes.

On your set there are a few possible 'quick fixes' if the original caps are miraculously all still good. The audio is usually picked off the last IF stage on sets of this era so if the video amp tubes are weak or the video detector diode is bad (rare when SS diodes are used) that will give you a blank raster. Another possibility is the AGC tube (if your set has AGC) is bad or the control is miss-adjusted.

If you can remove the platter of the record changer there should be a rubber wheel (called and idler BTW) between the motor shaft and where the inner lip of the platter should be. At this age they are usually rotted and need to be rebuilt/replaced.

I notice there is also an AM radio on that unit; does it work?

EDIT: One more thing sam's is good as long as you beware typos, and remember they do not always reflect all production changes....