Electronics Forum => Electronic Video Blog => Topic started by: The Radio Shop on March 14, 2016, 07:26:33 PM
Title: #37 Hewlett Packard 410A VTVM tear down
Post by: The Radio Shop on March 14, 2016, 07:26:33 PM
In this video we tear down the HP 410A vtvm. Inside the bottom of the unit we find a board that appears to be an add on that is not listed in the B.O.M. or shcematic. Will be a lot of work to get this old unit back operatrion but I think it is doable.
Title: Re: #37 Hewlett Packard 410A VTVM tear down
Post by: su_pyrow on March 14, 2016, 10:27:04 PM
wow, that is a pretty neat addition! sorry I wasn't of any help, i've been searching since i saw it.
allot of work there, its worth the time though. what a gem, i love the old HP stuff!
Title: Re: #37 Hewlett Packard 410A VTVM tear down
Post by: The Radio Shop on March 15, 2016, 12:07:52 PM
Yes, HP used to make some nice test gear. Now only clone computers :( Paul from Mr Carlsons lab gave me some info on the add on. Very nice stuff.
Title: Re: #37 Hewlett Packard 410A VTVM tear down
Post by: The Radio Shop on March 16, 2016, 05:00:39 PM
Thanks to Mike I now see that the probe tip screws off to accept different adaptors.
Title: Re: #37 Hewlett Packard 410A VTVM tear down
Post by: Mikes Radio Repair on March 16, 2016, 08:30:22 PM
Glad I could be of some help. Hope you are able to get it up and running.
Mike
Title: Re: #37 Hewlett Packard 410A VTVM tear down
Post by: The Radio Shop on March 16, 2016, 10:07:15 PM
I did apply some power to it. When you switch polarity on the selector the scale would peg at either end. I bet just changing out the caps it would go right back to work. I need so many capacitors at the moment :( So many projects waiting for them.
Really appreciate all the information and help Mike.
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