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Precision 920 Tube tester Short indicator - Printable Version

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Precision 920 Tube tester Short indicator - Sampler1 - 02-13-2019

Hi,
I'm considering buying a Precision 920 Tube tester But before I do I need some info. The Short Indicator G-10 Neon bulb is missing and from what I see they are rare and very expensive. Has anyone come up with a cheap DIY replacement for the G-10 Neon lamp-Bulb. If you have can you please leave details on what parts you used. I have read some people say just use a bulb and change the resistor values but, that is hard to do when I have no original G-10 and also have not bought it yet.

I do realize this is not the best tester with limitations But it is only the G-10 that concerns me.
Thanks! Any Ideas ?

RE: Precision 920 Tube tester Short indicator - morzh - 02-14-2019

https://www.ebay.com/itm/20pcs-Neon-Bulb-Indicator-Lamp-Red-Neon-5X12mm-With-Resistor-Neon-Light-Lampada/252468642466?epid=850361273&hash=item3ac84dc2a2:g:BS0AAOSwLN5WlmQO:rk:3:pf:0

Not G-10 but could be used.

RE: Precision 920 Tube tester Short indicator - 35Z5 - 02-14-2019

The industry std number for G10 is NE-31.

RE: Precision 920 Tube tester Short indicator - radiohenry - 02-14-2019

When I needed one for my tester I ended up buying a junk tester because I refused to spend $25.00 for a bulb. I imagine you can use a different one but you would need to change the socket . 
                                           Henry

RE: Precision 920 Tube tester Short indicator - Sampler1 - 02-14-2019

Thank you all for the info. Just ordered the Tube Tester as a project.
Regards,

RE: Precision 920 Tube tester Short indicator - 35Z5 - 02-14-2019

I'm 99% a NE-45 has same base, dunno about actual charistics.

RE: Precision 920 Tube tester Short indicator - Sampler1 - 02-15-2019

Thanks but the NE-45 specs are 2ma and size 9/16"
The G-10 or NE-31 is 12ma and Size 1"1/4"

The prices on both are crazy so I guess ill have to mod and use a standard Neon.. I hate to change the configuration and was hoping to figure out a way to use a bulb of normal price to fill the hole in the chassis. Guess not.

Still appreciated very much..

RE: Precision 920 Tube tester Short indicator - 35Z5 - 02-16-2019

The current rating would no doubt be dependant on condition of current limiting resistor inside base, I doubt a in spec NE-31 exists. Of course it's all about firing point, I doubt that's in spec either.  

I have a 910 plus a couple of 912 & 920, I wouldn't trust short test in any of them. Likely if short is indicated that's believable, but a small amount of leakage will never be indicated.

RE: Precision 920 Tube tester Short indicator - admin - 11-26-2021

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