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On a set the age of the CT-100 or other 50's set I would replace all paper and electrolytic caps. On something rare like this you don't want to damage anything like transformers or coils with a short because of bad caps.
Based on my experience old caps are not reliable! even if they may appear to work after a fashion they will continue to deteriorate. It is very difficult to do a good troubleshooting job when chasing down problems caused by leakage and low capacitance in these old caps.
Also you should replace the selenium rectifiers.
I would carefully check the CRT to see if it appears to have vacuum before investing a lot of effort on repairs...I'm sure someone who has worked on the CT-100 can offer more detailed tips (personally I have not worked on this model)
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