#16
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Quote:
If there is no sound (not even hum?) or raster then you probably have a low voltage power supply problem, (low voltage in this case means something around 400 volts so be careful) Does this set have a 5U4 tube, that one tube with the shoulders looks like one. Anyway, if it does, that will be the low voltage rectifier. check to see if it's lighting, a shorted or leaky filter cap can blow the heaters right out on that tube or cause the plates to glow orange. You can also check the voltage at the filter cap attached to the 5U4, should be several hundred volts, if not the cap or tube may be bad. Even if you get the LV power supply working correctly the set will probably need the paper caps replaced to make the rest of it function right |
#17
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I did plug it in directly.There is no hum at all,nothing.The tube you are asking about appears to be lit normally,or appears normal.I guess some sort of schematic would help so I can measure voltages and test/check tubes.I am really getting into this thing now.It sure is a beautiful TV.
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Main:Marantz 2220B ,Yamaha CDX-1100U, Thorens TD160 , Klipsch Forte II's Mancave:Yamaha C-6, M-2, T-1, CDX-1110u, KX-930, PF-800, AR9's |
#18
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Wild stab in the dark: It looks like a two-tube rectifier setup using (perhaps) 6AX5GT types. If I'm correct, they're the tubes directly above the shouldered one. Its identity is a puzzlement; another wild stab would 6Y6G. Isn't there a tube location chart pasted to the interior of the cabinet?
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