I have a 1992 sony KV27TS27 tv.
When I switch tv on it quickly switches off
by itself. If i keep switching off and on it eventually
comes on and then abruptly switches off again.
After some playing around it will stay on for however long
I watch TV.
I have looked on these posts and got some info from other sources
saying that the powerboard is gone. Unfortunally powerboards
are hard to find and are expensive, from what I have been told.

I have no experience with tv repair, at all, but would like to
give fixing this problem a try.

I have already purchased a new Sony, KV27FV310.
So any info would be appreciated.