Just scored this nice shape Precision 620 tube tester. anyone have this unit and can share procedures or PDF of the manual.
ange
Precision 620 tube tester
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Sonny ReVerb
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Re: Precision 620 tube tester
Found a little info here.
Thanks & question for tester owners
Great thanks Sony. I found that one too. They have a booklet for the 612 and 614 but there are discrepancies. I had a look under the hood of this 620 and there appears to be D cell batteries?? My oh my, and this tester does light up and the needle can be centered. Do these batteries need to be changed out.
ange
ange
Last edited by angelodp on Thu Aug 07, 2008 2:07 am, edited 1 time in total.
Re: Precision 620 tube tester
I have the 920 model. Got it for about $40 on ebay. It was made around 1947 
and still works. I had to change the 9pin tube socket since it's heater pins were intermittent. It had already been changed previously. There's a giant rectifier tube inside and an ancient lantern battery that still has some juice in it. 
Had to buy the manual separately and a supplement since it was missing some common tubes on the roller.
and still works. I had to change the 9pin tube socket since it's heater pins were intermittent. It had already been changed previously. There's a giant rectifier tube inside and an ancient lantern battery that still has some juice in it. Had to buy the manual separately and a supplement since it was missing some common tubes on the roller.You do not have the required permissions to view the files attached to this post.
If it says "Vintage" on it, -it isn't.
Re: Manual
I bet it was found at Radio CRA Archivesangelodp wrote:Where did you find the manual. Nice unit and price.
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Edit: dang my eyes, Radio ERA Archives it is!