GE Porta Color: need help identifying chassis / model

[Electronic M]

Questions 1 and 2. If you have the back open change those white caps! They can fail at the drop of a hat even if they test good, and when they fail they spray conductive foil everywhere that can short other stuff and increase collateral damage.

You can buy the spade end crimp connectors from any hardware store. What I'd do is strip the one wire and solder on a crimp connector.

Last question. Most makes used the same cathodes for everything from 5" to 27" CRTs. That cathode has a limited amount of electrons it can emit. The bigger the screen the more emission it needs for a given brightness level, thus smaller CRTs last longer and can work better with a weak CRT.