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Re: HP 130A restoration


 

Replacing both C111 and C112 with your purchased parts won’t be a?problem.?

Jeremy?
N6WFO?



On Wed, May 8, 2024 at 8:27 AM Bepi via <pepicima=[email protected]> wrote:
I found the main power supply issue, a blown capacitor in the HV section, one side to ground. Unplugging the tubes was not enough to exclude the HV section.
From the schematic?

I notice that the blown capacitor C112 has a sister one C111 , same value, according to the component list 0.1 uF


if I measure the good one i get a 3 times bigger value? (this Chinese res/cap/ind/diode/transistor 3$ is amazingly useful)


?and the resistor in between measures 45 ohm instead of 100. Can anybody read the capacitor color codes?
Reality is different from the schematic , the manual is for mod 25 to 724, mine is N 2482
I am tempted to go with the schematic and replace the original capacitors with polyester ones I already purchased, .1uF 650V, am I doing the right thing?

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