At 4/7/2010 02:14 PM, [email protected] wrote:
> If your external monitor turns off along with the LCD, then it's definitely a 
> GPU issue.

On my T41, closing the lid switch turns off both the LCD and the external 
monitor....so, I would think this symptom would not rule out a lid switch 
problem.

- TK 


>-----Original Message-----
>From: Ted Wiseman <[email protected]>
>To: Thinkpad Mailing List <[email protected]>
>Sent: Wed, Apr 7, 2010 1:42 pm
>Subject: Re: [Thinkpad] T43 screen out, China support befuddled!
>
>
>On 4/7/2010 9:47 AM, Andrew Webber wrote: 
>> There's a thread "[Thinkpad] T43 screen rpair done, China!" started 
>> Mar 31 which I think is the follow-up. 
> 
>Thanks. In that thread Stuart reported they replaced the LCD and the cable. 
>His problem must have been different from mine, since on my T42 the display 
>turns off on the LCD *and* the external monitor, whether they're running in 
>tandem or separately. So it couldn't be the LCD, and if it were in the cable I 
>don't think it would affect the external monitor. 
> 
>If this is caused by the infamous T4x graphics chip solder fracture, as Chris 
>suggested, then it's yet another manifestation of that problem, in addition to 
>the other symptoms I've read about. 
> 
>On 4/7/2010 8:30 AM, Chris Schumann wrote: 
> > I've had a t41p that does this same thing. It had the reflow done once, 
> > then later developed this problem. I believe it could well be a video 
> > chip issue. 

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