Cracking Open the ASUS Eee 901 20G ultra-portable
by Mark Kaelin | July 25, 2008, 2:28pm PDT | Image 10 of 42
Clips open RAM removed
Clips open RAM removed - Image 10 of 42
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Replace 901 defective cells
A bit of careful adhesive/potting compound scraping released a board mounted ? temperature sensor ? fixed to one of the batteries and then cleared away enough gunge to allow all 6 cells and the pcb to lifted clear of the bottom half of the case. That's as far as I've got and I know I haven't wrecked things completely yet because I've been able to put it all back together and put it pack into the computer and writing this on the power it contains.
There are now two problems.
The first is that the sets of three cells are custom assembled by spot welding onto specially shaped connector plates. Replicating this is not a diy option. It is gong to take careful arrangement of cells and routing of wires to get an equivalent assembly of individual cells back into the case but I think it looks do-able.
The second is that when, without having yet broken any connections, I measure cell voltages with I get 3.9v for one set of three cells and over 4 for the other. It's difficult to interpret such measurements but there seems to be chance that the cells are healthy and that it's the pcb that is faulty in which case a repair is out of reach.
So now is the decision point. Do I disassemble further, buy new cells and try to rebuild. Or do I accept that a new pack from pcbattery.co.uk at ??30 + ??4pp really is the best bet. And I have to admit that I have already bought a new pack. Do you really think I would wreck the broken one without having bought a back-up? The only small drawback is that it had to come from Hong Kong and took a month rather than the hoped-for 15 days to arrive. I think the company is genuine and offers good quality. I hope not to have to put their two-year guarantee to the test. It's just that the post from Hong Kong isn't as fast as you would expect when buying from a .co.uk website.
Any further comments / advice particularly on identifying defective cells would be most welcome.
RE: The ASUS Eee 901 20G Cracked Open (Cracking Open the ASUS Eee 901 20G ultra-portable)
You're kidding, right?
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