Re: HP 54512B (pair) repair
|
One of the two scopes is completely disassembled - head exploding emoji - and I have the old battery desoldered after confirming?it's fully depleted.? I enclose pics with what I'm using for replacement. I probably would have been fine going with a 2032 type, but the 2430 I ended?up fitting just right (maybe a bit snug), and the pins of the holder actually match the PCB eyelets. So all is good.?
I couldn't figure out what exactly was the original battery model, as it's not legible even after removing the top tab, but its diameter is a bit over 23mm.? I think this should work OK.
Back to the?actual troubleshooting now! Radu.?
On Fri, Feb 28, 2025 at 6:21?PM Roy J. Tellason, Sr. via <roy= [email protected]> wrote: On Thursday 27 February 2025 04:09:31 pm Radu Bogdan Dicher via wrote:
> 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?
You might find bits of this useful:
Scroll down to where they discuss coin and button cells:
"IEC designation numbers indicate the physical dimensions of the cylindrical cell. Cells less than one centimeter in height are assigned four-digit numbers, where the first two digits are the diameter in millimeters, while the last two digits are the height in tenths of millimeters. Taller cells are assigned five-digit numbers, where the first two digits are the diameter in millimeters, followed by the last three digits indicating the height in tenths of millimeters."
So the size of the battery will give you the info that you need.
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
|
