[Username1]

169 means the tube is not producing the nice spike to drive the Horiz. Output tubes
properly, Especially with the Cathode voltage so Low.

Low HV Probably from Poor Horiz. Output drive to G1's, If it's too high, HV will be low
and Tubes will overheat, and will take your Power Supply Voltages down....

You must have some intermittent poor operation of the Horiz. Osc Circuit.


There are a number of things going on, Osc. Possibly not working right, Causes
H Output to overheat, and brings down PS Voltages.... Get the H. Osc working
right, right frequency, right signal shape, Size, etc. FIRST.


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