Tektronix 606A that resists being repaired


Hi, everyone.

I've been working on a Tektronix 606A XY Display but the unit resists all my repair attempts. So, I'm reaching out to this group for suggestions and assistance.

I've documented my problems here: http://dutchtronix.com/Tek606A.htm

Summary: 2 problems in the HV section, possibly related
problem 1: HV oscillator stops working after about 2 minutes
problem 2: DC restorer circuit (intensity control) not working at all

Any assistance is appreciated.


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