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#1
03-21-2007, 03:05 PM
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Making progress!
Perhaps you are right, Eric. I will leave the circuit as is for now.
The chassis in this set was TIRED! The lytics were pretty bad... seriously leaky and one open. At some point, somebody wired in a new lytic in the power supply without disconnecting the leaky one... just wired one on top of the other. Four tubes were bad... HV rectifier was open, 6T8 was shorted, and the last two were pretty weak. I was a little surprised to find four tubes with so many issues. I suppose the HV tube going out was when they finally retired the set. A 10-watt resistor doubled in value, and while I haven't gone thru the rest of the resistors, I'm sure I'll find many off spec. As of last night, we have a heartbeat! I ran it for a little bit with the high voltage disabled, and then plugged in the HO Tube and got a picture... and no unpleasant surprises. The screen shows signs of more work to be done. The picture is a bit weak, retrace lines across the entire screen, and no control of the brightness (although threre is good brightness). Guess I'll poke around in the video amp area later. I suspect resistors. Regardless, I was glad to get a picture out of it. High voltage seems good and steady. The Sams does not give any HV info... but I'm getting about 12KV and I'm sure that's good for a 16" CRT. I would have posted a picture, but, I can't find my camera. I'll look for it tonight.
__________________
Charlie Trahan He who dies with the most toys still dies. 
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#2
03-21-2007, 05:56 PM
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Charlie,
You finally made it off the ship! Glad to see you are working on that set. I almost drove back to Texas to get it. I'm glad you got it. It is really cool. Gonna replace the Tv at the cabin?  polaraman
__________________
On the Bench: Master's Degree Thesis!
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