182 Sensitive Digital Voltmeter

[rgonzal021]

Hi,

I've got a 182 voltmeter in which the display goes blank after a few minutes. It's losing the +60V to the display, it goes to 0V. Here are some notes:

- the +5V to the +60V VFD supply looks good even when the I lose the +60V.
- a power supply put in place of VR500 (an 8.2V zener diode) which doesn't help,
- if the display is disconnected, the +60V still stops working.

Without a schematic, I would have to guess that the +60V VFD supply is the next thing to try replacing. It is labelled: ERG Inc. E705-E1368VF. Is it possible to get one of these? Does anyone have any other suggestions on what to check?

Thanks,
Bob Gonzales
Binghamton University
Chemistry Dept

[Dale C]

Sorry, the last repair date for the Model 182(which is obsolete in 1999) was in 2004.
There are no obsolete parts left in stock.
The Model 2182A replaces the Mode 182.

[ateneycke]

To whom it may concern:

Our company found replacement VFD modules through the original manufacturer (ERG, inc.)
The specific module in our Keithley 182M was ERG part number E705-E905 VF which was still
a good number with that company.

http://www.ergpower.com/