T60 charging circuit or motherboard defect? No battery power

[bototucuxi]

I have a T60 that I purchased in June 2009.

Six months ago my battery died and I bought a new one. Afyetr received it realized that didn't work either. The laptop does, however, work on AC power, whether or not the battery is in the laptop.

I called a local IBM tecnician and he told me to charge the new battery for 24 hours. After that time i tried to switch the notebook on without the AC power and no sign of booting, no lights, no nothing .. just a dead T60...

I rang him again and he told me that the most likely problem was that the charging circuit on the motherboard was with a defect. He said i had to buy a new motherboard

Here where i live the energy varies always .. sometimes there are deep high and low voltages and perhaps was during one of these variations of energy that blow the charging circuit because the T60 was working fine and one day while i was working the battery started to beeping and its light became orange blinking fast that mean that was a bad battery... but this happened very quickly. before the noptebook was fine.

I would like to know:

1. How can I check myself if indeed is the charging circuit defect r something else.

2. Do I need to buy a new motherboard for my T60 and if that is the case what is the FRU for my model T60 1953-D9U ?

3. Can I chage it mysellf? Is there a manual do desassemble and asseble the notebook?

Thanks.

boto

[richk]

First, here is the manual.
http://www-307.ibm.com/pc/support/site. ... MIGR-62733

It isn't that hard to do if you are careful. You need to keep track of the screws and you need thermal paste for the CPU. You have an intel-based 14" board, which is the cheapest. I just sold one for $50. It would be best if you could test the battery in another machine, but if the tech said the battery and ac adapter are OK, it probably is true. I have another board, so send me a pm if you are interested.

[bototucuxi]

Hi,

Whats the meaning of "you need thermal paste for the CPU. "?

How can I buy this motherboard from you? With paypal?

[bototucuxi]

Okay i have run the battery test and i sghow here the results. I have used the program BateryStats to produce the results buty i cant understand the results to check if my new battery is in god conditions. Please see the picture bellow t see the battery results mentoned before:


Please let me know what do the resulkts mean.
Thanks.
boto

[RealBlackStuff]

These two figures are the most important:
Full charge capacity: 79.12 Wh (the way it came when new)
Remaining capacity : 75.23 Wh (what is currently left in the battery).
The Remaining figure will go down over time as the battery gets older.
Your battery is in excellent condition.

As to thermal paste, to get an idea, have a look at this YouTube movie: http://www.youtube.com/watch?v=lFjh2Hkfj74
(comment: there's no need to take the CPU out)

[bototucuxi]

Today I have opened the notebook with a tecnitian and found our some componente called Q13 or RT16 burned or blown... I dont know what this piece does but is placed in back of the battery socket in the MB.

Please see pics here:

http://www.mediafire.com/?mz7ww2800eths04

If someone knows what this is plase let me know and what sould i do to make this laptop work again with battery, because it works with AC power.

thanks.

[rkawakami]

If you can post some sharper pictures (use the "macro" setting on the camera if it has one), then it may be possible to provide more detailed information. However, the following may help:

Q13 appears to be a MOSFET, a specialized high-current switching transistor. There are various kinds so it is very important to replace it with an exact copy (or one very, very close).

D19 would be a diode of some kind. The last photo appears to show that it has three terminals. That's a little bit different than the regular two-terminal diodes. If that's the case, then most likely it's a pair of diodes in a single package.

F9 would be a fuse. It looks like a small current fuse, probably less than 1A.

RT16 sounds like a temperature-dependent resistor, aka a thermistor.

All of these are unique components and need to be replaced with functional equivalents. Your best bet would be to get a whole motherboard. An alternative would be to get a mostly working motherboard (cheaper) and swap just the parts that are damaged. However, there is a danger in doing that because if there's a short somewhere on your motherboard, putting "new" components on there could result in the same damage.