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First, disconnect the B+ line going to the space command module and see if it will fire up. If not, measure the resistance between the secondary transformer taps to ground. Only the black wire should have a low resistance IIRC. It's been awhile since I cracked open a CC2.
You might also check the horizontal output transistor for a short. Check between collector and emitter for leakage especially. A multimeter is not enough to reveal leakage but will show shorts with a diode test.
Test the power supply rectifiers and input filters as well. You can connect an ohm meter across a filter cap and see if it charges up (displayed as a continuing rise in resistance) if it stays at a lower resistance and does not go up, replace that filter cap. A bad filter cap can also destroy the main rectifiers.
Sometimes these problems will only be evident under load.
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Jordan
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