Re: Gould 407x display help
Well, I decided that I’d make an extender cable to outrig the pre-amp PCB as instructed in the service manual.
I am glad I did because it made testing much easier and soon a 120k resistor dropping 260V because of a s/c zener was discovered. I can’t work out why the 1.3W 120V zener had failed when the supply resistor is only ⅛W and was undamaged. There wasn’t a suitable zener in the drawer so that’s it for a day or so.
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Richard
Index:
recursive loop: see recursive loop
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