[ltp] Replacing the backlight of the thinkpad LCD

[cupaxe]

Hello Richard,

Yes, the display goes off in a matter of seconds rather than minutes.
Thanks for the link. I will try to be very careful. There are so many
options for CCFL for a T42p 15" on ebay. They all don't mention
anything but that they are compatible with the T42p and are for
theWXGA displays. Mine is a 1600x1200 display which I think is a WXGA.
So I ordered one CCFL randomly chosen from one of the sellers with
good rating. I hope things work out well. In case you or anyone has a
better idea of these issues, here is the link to exact CCFL I bought-

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150320923226&ru=http%3A%2F%2Fshop.ebay.com%3A80%2F%3F_from%3DR40%26_trksid%3Dm38.l1313%26_nkw%3D%2B150320923226%26_sacat%3DSee-All-Categories%26_fvi%3D1

Thanks,
Krishna



On Sat, Jan 17, 2009 at 9:23 PM, Richard Neill <rn214@hermes.cam.ac.uk> wrote:
>
>
> cupaxe wrote:
>>
>> Hello everyone,
>>
>> Thank you so much for all your helpful suggestions and tips so far. On
>> your suggestion, I purchased and replaced the inverter with the same
>> exact model number (second hand though) from eBay. Unfortunately for
>> me, it didn't solve the problem.
>
> That's a shame. It was a good chance, but not a certainty.
>
>>
>> The display starts off fine, bright and clear. At random times during
>> the boot, it just goes completely blank and has to be rebooted for it
>> to appear again. The exact time from the start of the reboot when it
>> goes blank is different for every reboot.
>
> Just to check: I presume that these are various numbers of seconds, rather
> than minutes?
>
>> Do you all still think it is an inverter problem?
>
> If you've already replaced the inverter, then it probably isn't an inverter
> problem, and you need a new backlight.
>
>
> If not, then is it a
>>
>> backlight problem? I then need to replace the backlight which seems to
>> be very complicated from the looks for it. I still haven't removed the
>> LCD from the casing so I don't even know what lies behind it and how I
>> can get to the backlight. Looking forward to all your guidance and
>> suggestions.
>
> There's a good howto here:
> http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/
>
> Note: CCFLs contain mercury, which is moderately toxic. Try not to break the
> backlight. If you do, ventilate the area carefully before you return  to it.
>
> Richard
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>