[ARC5] BC-230 meter repair?

[J Mcvey via ARC5]

I acquired an old 'superior electronics" tube tester which was a parametric type rather than just emissions.
Unfortunately the meter was open. I had nothing to lose at this point but to open it up and see what what happened. All volt meters are basically an ammeter with a limiting resistor, and this one was no different.
The limiting resistor was wound nichrome that had a corroded open spot. which I soldered up and restored it back to operating condition. It think it changed the changed the value a small bit, but it works well.

If the D'Arsonvol movement coil is bad, then may be fatal. Hopefully it a corroded connection or resistor.



On Monday, August 4, 2014 3:16 PM, Ian Wilson <ianmwilson73 at gmail.com> wrote:
 


Assuming that the RF ammeters respond to DC, my BC-230
has a defective meter.

Is it worth trying to fix this? I assume there is some sort of
heating element/thermocouple arrangement inside.

73, ian K3IMW
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