Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Posts: n/a
Default Laptop LCD inverter repair

I posted this question a week ago but did not get any responses. I have
three "dead" inverter boards that came from an older IBM Thinkpad 600
series laptop. This tiny card converts low voltage to higher voltage
high frequency AC that is then used to light up the fluorescent
backlight tube(s). The symptom is that it will come on for a short time
(I can see the fluorescent tube glows for a 20-30 seconds, then just
before the laptop hinished its POST, the light goes out. While it is
on, I can hear a slight high frequency chirp from the card, then its
off. So a component in there is bad. Does any of you repair gurus have
any experience working with this kind of circuits and possibly tell me
what is the typical failure mode components that caused this behavior?
TIA. Note: spraying "freeze" on it did not help to bring it back.

  #2   Report Post  
Posts: n/a

I have no experience on this laptop but recently had a NEC 2010 lose
one tube of 10. I moved the inverter chip and the problem moved with
it. NEC was no help at all and I'm trying to find a repair depot that
will sell me the chip.

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
LCD monitor's Inverter bad ? Rajiv Mehra Electronics Repair 14 January 14th 07 05:30 AM
How to repair an UFO? Adam Ben Nalois Electronics Repair 27 January 18th 04 03:37 AM
Gouged on repair part by appliance repair company? DH in Denver Home Repair 14 December 15th 03 04:02 AM
Is a laptop LCD safe to repair Primster Electronics Repair 2 December 1st 03 04:07 AM

All times are GMT +1. The time now is 02:12 PM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright 2004-2024 DIYbanter.
The comments are property of their posters.

About Us

"It's about DIY & home improvement"