What's the best approach for this?

[martin martin]

Greetings all,

I was just given this 1973 Victor calculator.  Uses Beckman Panaplex displays to the tune of 12 digits!.

The display comes up, but dim.  Should I replace all the caps first?  The power supply is external.  It's sealed up pretty well.  14.5 VDC @60mA.

Thanks all.

[Richard Nicewonger]

Hi martin,

Congratulations, that’s a terrific calculator to receive as a gift! The high anode voltage required for the display

is generally provided by an inverter powered by the DC input. From the pictures, it looks like there is a transformer 

just behind the display. That is likely for the inverter. Look for small electrolytics around that transformer, especially

ones that have high operating voltage values. All those should be replaced. The yellow ones in front of the display are

probably OK if all digits are visible. I love these kind of calculators and hope you get this one in working condition.

All the best,

Rich

 

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<victor 2.jpg><victor 1.jpg>

[martin martin]

Update:

Will soon replace caps on the calc. board.  

Here's a pic of the power supply. Caps leaking and diodes were partially melted from the failed batteries.

More work to do!