06-03-2013 04:01 AM
My Thinkpad Twist does not display anything when turned on except on external monitors. The Device manager shows a greyed out internal display icon, says it is not connected.
1. Could this be the power connect ribbon cable p/n DC002C003W00 have a fractured wire(s)? I have tested for open circuit between PWR1 and PWR2 connectors and there are 4 sequential pins which are open circuit. Is this normal?
2. The touch screen works
3. There appears to be absolutely no LED backlighting working
4. Is there a possible fix for this and if so is it the power cables or some physical problem with the ribbon cables OR is it definitely a new display that is needed using existing cables?
Thanks in advance
06-10-2013 04:27 PM
The last 4 pins on the connector are unused I have determined so it is not the power ribbon cable connector.
I found two wires fractured in the LCD ribbon cable right at the point where it feeds through the twist mount. I expect this could be a common problem after use. After repairing these two wires it did not fix the screen problem. I have ordered a replacement LDVS ribbon cable and will report back once I have replaced that.
09-18-2015 08:18 AM
08-25-2016 11:50 AM
Facing the same problem here. I think the backlight is working but definitely no display. Occasionally it will boot up (1 out of 10 times) and display the POST/BIOS screen to the internal/attached swivel screen, and then I know it will boot up completely, but if the POST screen doesn't appear, I know that the Windows screen will not show up. The POST/BIOS screen NEVER shows up on an external monitor attached via mini-HDMI, but the Windows boot screen ALWAYS appears on every attempt. Removing the hard drive gave a similar result, 1 out of 10 times displaying the BIOS screen, but obviously never booting to Windows. This seems to indicate that either the motherboard is bad. I thought it might be a connection, but the screen never seems to cut out or cut in no matter how much I twist or bang the computer. Any suggestions? If I can't fix this, I figure I have a junker since it will likely cost the same to repair as to purchase a new one. Help?