25" chassis bench-test with a 19" tube?

ajcrm125

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I want to check the B+ on y 25" WG chassis but I reeeeealy don't feel like lugging the 25" tube down into the lab. Can I simply use a 19" tube I have down here or will the flyback voltage be too much and ruin the tube?
 
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The yoke is different between 19" and 25".

I'm gonna disagree a bit with ken's statement on one condition. If your monitor is a 7100 series and you want to test your chassis on a 7100 series 19" tube, this will work just fine obviously your image will runn off the screen but it will produce a picture and give you a b+ reading close enough to verify functio of your chassis. You'll have to swap neckboards if you have the skinny neck tube but this isn,t a problem, I've been doing it for years. Any other 7000 series monitor and chassis combos are gonna give you trouble because of ken's above statement
 
Yeah I'm not even interested in seeing a picture. I just want to have the anode safely connected to something while I test the B+.
 
I used to do it all the time but I had extra yokes depending on the chassis I was testing.
 
As some have already mentioned, it depends on the chassis model. I found out that you CAN'T always swap yokes. I put a 25" yoke on a 19" tube once for testing, and there was so much static voltage that it kept shocking me when i touched it for tweaking...
 
As some have already mentioned, it depends on the chassis model. I found out that you CAN'T always swap yokes. I put a 25" yoke on a 19" tube once for testing, and there was so much static voltage that it kept shocking me when i touched it for tweaking...

Wouldnt that just be from the dag ground missing?
 
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