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I have the 27" crt, and it was big buck back in the day from the price list I have seen, like double a 21-23".
That is an easy chassis to work on, I think 3 of the caps are the white tube
1kv type that may or may not be bad, the rest are prob ok.
uses a power transformer so not a hot chassis, and a voltage doubler which prob has a bad cap (all 3of mine did)
Don't rejuve the crt, even weak they can make a decent pic, and you will have a hard time finding a replacement so no need to risk it.
Flybacks run hot on that so dont be suprised if you see leaking tar, it may look bad but will prob be ok, just leave it be.
Lastly if you get a very slow hula movement in the vert (1 cycle aprox 15 seconds) make sure you have a good clean PCB to Chassis connection on the deflection pcb. It just uses sheet metal screws and a clamping pressure to make contact between the PCB ground and the chassis ground.
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