Lines in Blue CRT on a Sony Projection TV

The blue tube is being overdriven and clipping so you're getting retrace lines. Did the problem occur suddenly or gradually? Either way you're in need of an experienced tech to repair the problem. Quit using the TV until it's fixed to prevent further damage.

The CRTs are known problems on these models. The G2 voltage drifts upward over time due to internal leakage. Grounding the CRT pins with the TV on and socket removed will clear it up for a few weaks, but the leakage returns. I fudged one with stacked zeners to about 420 volts, and bumped the G2 up to butt up against the zeners. It's been running over a year now. Another tech told me that the focus\screen controls are known to be cranky, but I haven't seen one yet.

I read somewhere that contacting Sony may yield some sort of compensation if one or more of the CRTs are bad.

John