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Old 10-06-2011, 01:11 AM
jbivy jbivy is offline
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Join Date: Dec 2010
Location: Louisvile Kentucky
Posts: 395
Quote:
Originally Posted by jr_tech View Post
It sounds to me as if it is loosing B+ voltage... as the B+ voltage drops the vertical oscillator quits, leaving a horizontal line... then the horizontal oscillator quits (which will indeed kill the high voltage) but a dot in the center may remain for several seconds until the high voltage filter capacitor is discharged, then fade out slowly. Does this describe what you are seeing?
If do not have a multimeter, get one... the $20 one linked above is a killer deal! With that you can monitor voltages in the set as the problem occurs.
If the set has a tube B+ rectifier like a 5U4, you might observe it as the problem occurs perhaps the filaments go dark or the plates turn cherry red or the whole tube glows purple. Might be a clue there!
jr
That seems to be exactly what is happening to my set. So..where do you suggest i go from here?
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