• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 450
  • Last Modified:

Laptop wont boot- possible water damage

I have a Lenovo U110 that was apparently affected by light water damage (carried unprotected in a snowstorm). It would not show any indication, including the battery charging indicator. The charger shows 19+V, but no other sign of life with battery or charger.  I removed all components and immersed them in isopropyl achohol, and dried them carefully. I reconnected everything, still no life. Then tried with just the display, keyboard/touchpad, and DRAM and power switch cables, & CMOS battery (which is OK) but still  nothing. I get life (3+V) on the power switch, which goes to ground when the switch is pressed. Disk drive is OK with external attachment.

I would appreciate any ideas for further diagnosis...
0
goldband
Asked:
goldband
  • 6
  • 4
2 Solutions
 
nobusCommented:
hey Ravi, you read my article !

anyhow goldband, you can always brush the motherboard carefully to remove stuck dirt (that may be conductive)
or blow it out with a can of compressed air (i always use a compressor, but not too close)
and starting with a minimum of connected devices also helps.
in your case, try to test as many components as you can on another laptop or PC (you tested the disk already)
and remove the rest
i suppose you reset the CMOS, since you said the battery is ok ?
0
 
nobusCommented:
this may help too :
here my laptop troubleshooting guide :
- remove battery and AC adaptor, hold power button for 20 sec, connect AC and reboot --> any display ? if NO -->
- disconnect all disk and cd drives, battery , and other cards and peripherals, leave only 1 ram stick
- boot -->any display ?
- if NO remove all ram and reboot --> if NO beeps, mobo or cpu bad ; if it beeps, replace ram sti
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
Ravi AgrawalCommented:
0
 
Ravi AgrawalCommented:
@ nobus

Read it on 12/12/09 03:05 PM, ID: 6575

You did not go through the Comments, right. EE was having issues relating to Emailing of Article comments, a few days ago, so maybe you didn't get the email regarding Article Comment posted.

Ravi.
0
 
nobusCommented:
Ravi, i just read yours on drivers.
 not sure what you mean with the above?? (maybe we must move the discussion to the bar??
0
 
Ravi AgrawalCommented:
It was the answer to ---- hey Ravi, you read my article !

Scroll down to your comments section in your article, I read it on 12th Dec, The rest are time and ID details.

If you voted, thanks for the yes vote :lol: no way to know if it was you who voted.

I guess we are leaving the author behind in our personal discussions, but there is no place to chat on EE so it becomes here by default.

Hi author of the question, goldband whats your progress?

Ravi.
0
 
nobusCommented:
>>   but there is no place to chat on EE    <<   wrong -  the lounge ! look in the section others
0
 
nobusCommented:
>>   but there is no place to chat on EE    <<   wrong -  the lounge ! look in the section others
0
 
goldbandAuthor Commented:
Since there is no life on the display and this is a laptop- I am at a loss for other signs.... should I expect a 'beep' as in most desktop motherboards when POST occurs? I would connect an external display, but I am not sure this would be useful since most laptops default to LCD only. Also, is there any general way to check the power supply? I can find 3.3V at some points on the mobo, but not 5v or 12V-- where should I look of those, and does it depend on the power switch being functional?
0
 
nobusCommented:
>>  should I expect a 'beep'   <<  yes
the +5 V is applied after the power switch starts the power supply
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

  • 6
  • 4
Tackle projects and never again get stuck behind a technical roadblock.
Join Now