LCD Diagnosis Request

[jn1520]

Hi Everyone. Great forum!

Here's a question regarding my TP600X. I've had this laptop from the beginning. Absolutely my favorite and most reliable computer ever. Recently, the LCD starting giving me trouble.

First, I would here a high-pitch, whining sound coming from the LCD. Now the LCD won't stay lit. Connecting to a monitor works. I've also noticed that if I close the unit and re-open it, the screen will light up for a few seconds and then go dark again.

Tried replacing the Inverter Card, but no luck yet. Also checked all cables and they seem to be secure.

Based on your experience, what can this be? Thanks ahead of time!

[Rob Mayercik]

Have you considered that the backlight may be going out?

There's a sticky post up top with a good step-by-step on how to replace it (haven't tried it myself, but my backlight is still working ok (though it is sometimes a little sluggish getting up to full brightness).

Rob

[jn1520]

Thanks for the reply. I'm hoping it's not the backlight because that would be the most difficult repair. Unfortunately, you're probably on the money, considering I've replaced the inverter card and checked all cables.

I'll post back if I figure anything out.

[tfflivemb2]

It might be easier to replace the entire screen, if the task of replacing the CCFL seems to daunting for you. The price of the LCDs with and without the entire display casing have dropped quite a bit in the past 2 years.

[LtTPfan]

You say the backlight won't remain lit. How is the brightness when lit, is it dim? Does the tint start out reddish then get whiter? Does it take a while to warm up? How do you know the inverter you got was good? Are the symptoms the same? If you bought an inverter off eBay or someting it could very well be bad as I doubt many vendors do extensive testing; if they turn it on and it works they assume it's good to go. Unless brightness is bad I'd suspect your "new" inverter.