A 25-inch Sharp Linytron from 1982 or so. The largest turret tuner set I have (still!) ever seen. I was about 12. The set was arcing from the flyback casing to the HOT (?) heatsink. I wedged a piece of vinyl stripping between the two and the set worked perfect from then on.
I wish I still had that set! I remember it had a REALLY fuzzy picture; at that time, I didn't know to adjust the flyback's focus control. My parents dumped it when I wasn't looking.