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if in doubt check those black capacitors for leakage if you have such an instrument to test them, wouldn't hurt to replace them, they could be causing your color issue too.
as far as electrolytics go i've given up on trusting 40 year old or more electrolytics even multi section , I do have one set running on one original electrolytic in a multi can , its a 58 zenith and the reason is its a 475 volt cap , I didn't have any 500 volt ones to put in so I chanced it and it seems to be holding up , its tough to test the voltage because the set can only be removed by disconnecting the tuner with the two plug in plug out connectors running to the tuner and I really didn't want to remove the tuner just to test the voltage on that one electrolytic just to see if it has a higher then 450 volt running voltage and running wires from it would have been a pain too , down the road I may just replace it , its in the focus circuit.
awaiting the post that tells us the cathode current.
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