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Re: 7704A - CRT Circuit Question


 

Mark,

I checked those and one of them is well within tolerance. The other one is just at the high end of its tolerance. I may replace one or both of them but they should be okay for now.

Thanks!
Barry - N4BUQ

Barry,

These are a bleeder for the cathode circuit and partial divider for high voltage
and focus circuit. I replaced mine with 1W 1% types and spaced them off the
board. The 1W types I use are about 1cm in length, not 3,68 x 8,74mm types.

You will find the two 22meg resistors to be well out of tolerance. Use VR37
Vishay types.

Mark


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