Lenovo x220 Backlight Not Turning on

[leggot]

Hi all,

I have a Lenovo x220. At one point in time, the backlight worked, but the lcd had a vertical line through the screen. Upon reseating the connector from the motherboard to the ribbon cable, the backlight ceased to work. I figured that it was simply poor timing that the backlight went out and I ordered a replacement panel off ebay. Unfortunately, the panel arrived and exhibited similar symptoms of the backlight not turning on.

I have tested fuses on the mothboard around the connector and fuses on the panel's board and was unable to discover any shorts.

My next step is to test the ribbon cable for loose connections and also the voltages at the test points on the panel, but I am open to any other suggestions. Thanks

[saularciga]

Re: Lenovo x220 Backlight Not Turning on

I give you advice, NEVER manipulate the fexible cable of the screen on your computer with voltajes. Always disconnect battery or power adapter 3 minutes before, Search the fuse. there is OPEN . Are very very little