Saving Circuit Board w/o Tube

[Electronic M]

Originally Posted by old_tv_nut

I didn't know that using a resistive discharge would prevent the bounceback (dielectric relaxation) - interesting. I wonder if bounceback would be eliminated with a direct discharge if you just held the contact for a few seconds more?

I've experienced bounce back minutes after disconnecting from IIRC over 10sec long discharge... I've also done multiple discharges and gotten multiple bounce backs on some CRTs. I either resistively discharge, leave the CRT HV connector shorted to ground, discharge immediately before contact, or regret my lapse... assuming the CRT hasn't previously been discharged beyond bounce back.

It is one of life's little annoyances.

I've always liked the SS and hybrid Zeniths that use a resistor voltage divider to obtain focus voltage from the HV since they self discharge fairly quickly.