Motorola roundie

[doogie812]

In looking at your photograph it seems you are very close to zero beat on the oscillator. What is disturbing is the two horizontal bars at the top of the picture. If these are not a photographic anomaly I would be on the lookout for an open peaking (choke) coil across a plate resistor in the chroma, video & sync circuits. While many circuits work without these little buggers their absence passes high frequencies into the circuit causing undesirable output.