I have asked elsewhere but I think this may be more an electronics than computer question as such so:
A couple of years ago daughter b/f bought a Dell Inspiron 1545 laptop and it has been running ok till just recently when his Mum caught the power lead somehow.
From then on it still runs ok from the power adaptor / PSU but it doesn't seem to want to charge the battery. What could be part of the same issue is it now flashes the front power indicator with what looks like 4 fast amber flashes and one longer white.
Going into the BIOS tells us that it thinks the battery is there and 'healthy' but is not charging and at 0%.
We tried another battery and psu from a different 1545 (that had a broken DC socket) but that didn't change anything.
Yesterday, thinking it /could/ be a socket and where the tiny inner /3rd pin connects (thinking it might be a 'sense' wire and a socket was cheap etc) I changed it for him but again, no improvement.
I think it still runs from the battery but of course it's now flat (coincidentally a mate is considering getting a Dell 1545 so we might be able to do some tests ).
So, is there anything else we could do to try to work out what's going on here please? I still have some test gear from my 'daze' as a support tech (DMMs, scope, fc, bench PSU etc).
Cheers, T i m