CF-18 Dead Motherboard

I have two CF-18's I am working on that I think have dead motherboards. Neither will power up at all. No lights or beeps or all. I have tried to power them up with a good charged batter and original Panasonic charger that I use regularly. What are the common (if any) connections and motherboard failures with CF-18's? I have a spare board that is suppose to be good, but was told it has a bad battery port on it. So I can swap it out with one of the bad boards.

CF-18BHAZXKM
Description: Pentium M 900MHz(Centrino), 10.4" Hi-bright Transmissive XGA, 40GB HDD, 256 MB RAM, WLAN, Dual pass through antenna, WIN XP

CF-18FHAZBBM
Description: Pentium M 733- 1.1GHzULV (Centrino), 10.4" Touch Screen Hi-bright XGA, 40GB, 256MB, Intel 802.11a+b+g, WIN XP SP2, Bluetooth, Dual pass through

 

These are sensitive to certain types of RAM... did you try removing the extra RAM modules?

I had this problem with mine...the seller put ram in it and didn't test it... It wouldn't power up until i removed the extra ram.

 

Not quite that simple, no extra ram in them. I have backs off of both of them now. I can tell one of them has been into before as it is missing the dock connector and couple other cables. Trying to see what I can come up with them both tonight.

EDIT:
Swapped motherboard in one unit, now I have one working, (CF-18DDAZBMM) it's a digitizer motherboard in a non digitizer body. It seems to be working fine on battery, guess the battery port wasn't bad after all on it. Still working on the other one.

 

Try to look on IC51 or 54 if I am not mistaken. Its been a long time since i troule shoot the same model. Look if there is a sign of burn and then replace it. It is near between the docking connector center of the Mbo.


ohlip