sony trinitron KV-25ST12

[bvabhi]

Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505

[mrlichenstein]

That's a code for something. Usually involves the quality of the picture.

[jetpack1986]

I've faced the same problem once before! somehow my little brother fixed that by pushing a button (and I don't know what it was) I'll ask him if you want to..

[chrisstv1979]

I can fix that

[Seiji5225]

10年くらい経ちましたね。

そろそろ不具合が出始める頃かも？