Thread: Philco 51-T1601
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  #12  
Old 03-14-2015, 10:24 PM
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miniman82 miniman82 is offline
First Light: 1952-2011
 
Join Date: Jun 2009
Location: Great Mills, MD
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This is easy, not sure why you're making all these funky readings but...


Your horizontal oscillator probably stopped running. Easiest thing to do is remove the 6CD6 and scope the grid pin for a waveform, if it's there you have other problems. If not, investigate why and trace it back. If the coupling cap between the oscillator and output tube is leaking, you will have 0 or positive DC voltage on the grid of the output tube when it's installed whether the waveform is there or not- that's BAD. There should be normal negative grid voltage on the output tube when things are working like they are supposed to. This is the #1 cause of melted output tubes in TV sets.
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