hickok 209a VTVM

View previous topic View next topic Go down

hickok 209a VTVM

Post by CHUCKSUE on Thu Feb 05, 2015 3:40 pm

Has anyone worked on one of these? I would like to restore it.

CHUCKSUE
Member
Member

Number of posts : 26
Registration date : 2013-07-04

Back to top Go down

Re: hickok 209a VTVM

Post by 75X11 on Thu Feb 05, 2015 6:45 pm

I'm not familiar with them, but here's a start for you...

http://bama.edebris.com/manuals/hickok/209a/
avatar
75X11
Member
Member

Number of posts : 4900
Age : 60
Registration date : 2013-03-10

Back to top Go down

Re: hickok 209a VTVM

Post by willy3486 on Thu Feb 05, 2015 11:49 pm

I have never worked on one like that but I am getting onto restoring these old test pieces. I have had a lot of luck doing so. I have restored a few pieces like a scope and generator in the last few years.

willy3486
Member
Member

Number of posts : 1392
Registration date : 2011-07-02

Back to top Go down

hickok 209a

Post by CHUCKSUE on Fri Feb 06, 2015 4:54 pm

I opened her up last night. The VTVM had no paper caps. I did notice that there was a resistor changed. They had two resistors in parallel that were 10%. The result was the resistance was too high. I also found out that the batteries have to be positive ground. I set the two pots that control a 10volt and a 40 volt level according to the schematic. I then calibrated the unit using my fluke to set the control voltages. I would like to find some wire to re pair the test leads. Other than that it is working fine.

CHUCKSUE
Member
Member

Number of posts : 26
Registration date : 2013-07-04

Back to top Go down

Re: hickok 209a VTVM

Post by Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum