C860 Charging Problem (not Battery), weird voltage measured on the terminals Options

[seva]

(This is going to sound like a lot of other posts, but read on for more details)

Recently I got my C-860 back from Sharp via Japan Direct, I wanted them to look at the CF port, which may or may not have had a problem, anyhow everything was working fine in regards to charging before that, but after I got it back I couldn't turn the Zaurus on.

I thought this was my battery, so I ordered a new one, Zaurus turned on. After the battery discharged it wouldn't charge anymore, that's when I started looking on the forums about other similiar sounding problems.

I know there are a lot of people reporting problems charging, and have often found odd solutions, like flashing the current state of the battery into the D+M Batt Voltage Adjust menu.

However, it seems like I have a hardware issue, I measured voltage across positive and negative terminals on a normal Zaurus C-860 (my friend's) and mine; here's what I got:

CODE

Normal Zaurus:
   Charge off: 0.4V (or something close to that)
   Charge on: 4.2V

My Zaurus:
   Charge off: 3.0V
   Charge on: 2.5V

What is going on here? Any suggestions? I don't really want to send it back to Japan, because last time it took 3 months?!

For the record, my new battery seems to be fine, when charged in my friend's Zaurus, I can use it just fine until it's drained.

Thanks for reading, as a bonus here's a picture of two C-860s side by side, click for a larger version:


P.S. I meant to post this in the hardware sub-forum, mods feel free to move.

[seinfield]

I have an idea, you can buy a normal fuse (a cristal fuse) of 630 ma or 500ma (if you dont find the 630ma fuse).
Break the cristal being carefull to dont miss the conductor, then solder both sides of that conductor to your zaurus where the small fuse goes, taking care to dont touch any other pice of metal or circuit around.

I think that can works!!!

Regards

[mle]

I have an idea, you can buy a normal fuse (a cristal fuse) of 630 ma or 500ma (if you dont find the 630ma fuse).
Break the cristal being carefull to dont miss the conductor, then solder both sides of that conductor to your zaurus where the small fuse goes, taking care to dont touch any other pice of metal or circuit around.

I think that can works!!!

Regards

Hi Seinfield, I was thinking this way also when I was quite desperate to find correct fuses. Problem is that those fuses are 0603 size, 1.6x0.8 mm and the layout is quite tight, so adding self-made fuses there may not be easy...

Anyway, I got some samplefuses from Koa Speers, and I also have few extra fuses of both of them, so if there is a need, I can send those extrafuses.