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OK, the 3 dots are probably a sign that the set is going into shutdown. The power (green light) will stay on, even in shutdown mode. If you're handy with electronics, you can try a quick "cheat" test to see if it's a faulty HVR block:
The HVR block is a clear shiny plastic case with red inside; about 4" tall, which is mounted on the metal shield around the CRT, (identified by one heavy wire from the high voltage anode cap ontop of the CRT, and one heavy wire to the flyback transformer). There is a third wire from the HVR block; a very thin red wire. You can unsolder that from it's terminal on the back of the HVR block, and tape it out of the way. There is probably a glob of silicone rubber over the connection, which you can carefully pull off to expose the solder lug terminal. Now turn the set on, and see if it still is shutting down. If not, and it appears to be working, the set is sensing too much high voltage and is going into X-ray safety shutdown. Usually, between you and me and the gatepost, that's a false alarm. But for lawsuit protection, I have to say "DONT run the TV with that wire disconnected". If you want to be super-sloppy, you can snip that wire and then reconnect it without messing with the block itself.
If it's still shutting down, you need further troubleshooting.
NOTE: Although that thin red wire does unplug from the board, it has a safety interlock and the TV will not start with that plug out. Hence you have to unsolder the wire at the HVR block for the "test".
Caution for anyone not familiar with TV work: These sets store high voltage in the CRT for hours, and you can get a nasty zap while fiddling around with the HVR block.
Charles
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Collecting & restoring TVs in Los Angeles since age 10
Last edited by kx250rider; 10-01-2010 at 12:44 PM.
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