Re: HP 54512B (pair) repair
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Thank you, Steve.? One other unfortunate effect?of the spot-welding of the top tab is that the battery code is not visible. I can probably destroy the battery once out, and read the CRxyzt?battery code, but would anyone have good info offhand on it? I couldn't track this info in any of the manuals.? Or alternatively a link to the correct replacement would be even better, of course. Some years ago, I'd be confident I could source it from Keysight, but these days availability of parts seems to not quite be there anymore.? Thanks a bunch! Radu.?
On Thu, Feb 27, 2025 at 12:53?PM Steve Hendrix via <SteveHx= [email protected]> wrote: On 2025-02-27 3:47 PM, Radu Bogdan Dicher via wrote:
> If I understand this right, the correct procedure is to desolder both
> tabs?... Given the top tab is spot welded, it may not be reusable? So,
> replacing?this with the appropriate coin battery socket and a new
> battery is the way to go?
When you get to the bottom side of the PCB, I'm pretty sure you'll find
three "leads" sticking thru. Two go to the top side of the cell, and one
to the underside. You'll need to carefully desolder all three to remove
the cell, then clean up the holes. Not sure if you will find a socket
that neatly fits the same footprint; you may have to just solder in the
new battery. Those tabs are a permanent part of the battery. If you find
a socket that will fit, you can just buy a standard coin cell without
the tabs of course.
Steve Hendrix
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