Weston Tube Tester Model 777 parts & issues

[Brow2070]

Picked up a Weston multimeter 772 & 777 tube tester combo. I repaired the power cord for it and now I'm looking to find the short indicator bulb (My fault it broke!). After repairing the cord I had it up and running but then it stopped working so I took it out of its case and I must of put pressure unknowingly on the short indicator bulb and it broke. Now I have to replace that before I can track down why it's not working anymore. I don't have any schematics for it either. Does anyone know where I could find the short indicator bulb and schematics? I want to get this thing working again.

 

[Brow2070]

Date inside is SEPT 1944.

 

[zackthedog]

Google "tube tester parts and service" and you'll come across a number of businesses that do this. The Weston may be hard to find parts for, but that's your best bet.

 

[gadget73]

maybe this will help
http://bama.edebris.com/manuals/weston/777/
http://bama.edebris.com/manuals/weston/772/

often the short indicator bulbs are a neon type.

 

[Catmanboo]

You can likely sub a different neon bulb with similar firing voltage, not too critical. Depending on that, may have to change series resistor also.

 

[Pio1980]

Pic of bulb remnants would help. Iirc, there was an unusual bayonet based neon bulb with half cup electrodes used in military receivers.

 

[Catmanboo]

Pic of bulb remnants would help. Iirc, there was an unusual bayonet based neon bulb with half cup electrodes used in military receivers.

I believe that's what he has, judging by pics, but I think it's a screw-in base. Electrodes look like an old style pith helmet.

 

[Pio1980]

There are screw base bulbs for 110 and 220 V, the correct part should be with the dox.