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I would check resistors around and downstream of the oscillator, R65 and R66 especially, also R67 and R68 while you're in the neighborhood. You have partial deflection, suggesting that your oscillator is working somewhat, but its sawtooth is attenuated. You have already replaced obvious capacitors in that area. There ain't much left but resistors, so I would check those to eliminate 'em from the equation.
Also, C48 is the coupling cap for the oscillator. With a value of 4700 pf, I suppose it is a mica, but micas do croak sometimes.
Phil Nelson
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