View Single Post
  #9   Report Post  
Posted to sci.electronics.repair
Rick Rick is offline
external usenet poster
 
Posts: 43
Default *New* problems after replacing IBM lap top main board

Morse wrote:

"Rick" wrote in message ...

snip

Nevermind. A second call to IBM confirmed that the first idiot I spoke
to at IBM gave me incorrect information. The 16 MB VGA version of the
main board isn't compatible with the display in this lap top.

Rick


Have they agreed to exchange the board for the correct one, Rick? I imagine
this is a frighteningly expensive item? Laptop manufacturers love to fleece
people for spare parts, which is one reason I'm reluctant to replace my
Omnibook 6100. It's been patched up a few times with secondhand spares very
cheaply, and bits are fairly readily available on eBay for them. If I bought
a new one I just know it'd fail one day outside the warranty and I'd be left
with a pile of junk!

Morse


Morse, you seen this one?

Got the replacement board, slapped it in and...

Dead. Well, let's call it barely on life support: The battery charge
indicator works and the battery seems to be charging. At least I know
the thing is getting power. But other than that, hit the power button
and all I get is a split second of the cooling fan doing a twitch and
the hard drive status LED flashes a split second - whether the hard
drive is in the bay or not. Nothing else. None of the other status LED's
light, no screen display - nuttin'.

So far I've reseated the cpu, reseated the mini PCI card, reseated and
then pulled the RAM, pulled the hard drive and CD ROM, pulled the
battery. No change.

I can't see how I could have introduced a short considering the way
ThinkPads assemble. There are only 3 direct board to board connections
and only one plastic insulation shield that goes under the keyboard. All
screws are accounted for.

Having pulled all components that the HRM said to pull and there is
still no change any other suggestions for troubleshooting this? Or does
it seem like a dead main board right out of the bag? What this one is
doing is only slightly different than the won't power up problem with
the original main board that went bad. I'm a little suspicious of the
replacement board because it came with a CMOS battery and the mini PCI
cables already attached - not "stock" items to come with an IBM
replacement main board.

Rick