cappy2112 wrote:There is a bit if dust around the edges of the keypad, how should I clean this?
That said, I'm familiar with the self tests in the 15C & 16C, and I'm surprised & disappointed that there isn't a self test/acceptance test in the 41, given that it is so much more powerful. Why is that? Did HP run out of code space in the ROMS, or is there another reason?
A built in self test seems like a great idea for every electronic device.
The battery case still holds itself shut, but I think I will buy a spare. It looks like it could come loose if jarred.
andThere doesn't seem to be any gaps along the edges, as would be caused by loose or cracked plastic posts.
I do want to disassemble the whole thing to make sure everything else is ok inside. I'm considering doing the CL upgrade, since the serial number
is in the correct range, and the display has the square corners.
There was a tiny drop of corrosion on the dark padding under the battery case, but it doesn't look like it ran. It's barely noticeable, but I'd like to remove the residue for the sake of prevention.
What is the best way to clean the corrosion off of the spring and padding? Does vinegar & baking soda remove corrosion?
Is there any compound I should coat the springs with to prevent future corrosion (similar to the lead posts on a car battery)?
If it's from alkaline batteries, use white vinegar on a Q-tip. I've never had any corrosion in mine, but I've done this trick on bicycle lights and couldn't believe how well it worked! The Q-tip should not be dripping wet. There's no need for that. If the corrosion is from acidic batteries like carbon-zinc or zinc-chloride, then use a baking-soda solution.
I think that if there's a problem, it will show up without a self-test
Garth wrote:Have you ever heard of one of them failing the self test?
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