This chassis is famous for the high voltage transformer to short and go bad. There is also a couple of capacitors that go bad sometimes along with the horizontal output transistor. Now there is a slight tiny bit of chance that a small coil that is attached to the secondary of the horizontal driver transformer and the other end of this coil is attached to the base of the horizontal output transistor could need to be taken out of the board, the leads scrapped of of enamal and resoldered onto the board as this coil will cause intermittant problems of the set going on and off by itself. Good Luck, and let us know how you make out with this. The coil location is call L1401 or L401.
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