Is it the LCD or Inverter? no display or faintly seeable

[MikeRies]

I have a ThinkPad 770ED with a LCD that is basically dead. If you try real hard you can see things but not enough to use.

The monitor port works perfectly.

Does this mean the LCD is bad or do I replace the inverter?

[sickofit]

Definately the inverter....you can use part # 12J0445 instead of the original 10L1161....more widely available and ALOT cheaper...

All you have to do is remove the keyboard(6 screws on bottom,4 on top)(4 ribbon cables underneath,remove carefully),and the enclosure around the LCD(3 screws at bottom)...

You may be able to just hit FN=F7 a couple times to turn the LCD off then back on.....works for awhile usually,but eventually dies completly...

Do a Google search for the part number....I was able to buy 2 before for 19.00 U.S each awhile ago.....

Later....

Greg St.L

[jphudek]

Just to let you know, I had the same problem on my 770z and ended up installing a new DC/DC board to get it going. There is a fuse (surface mount) on the DC/DC board that opened, when replaced the board worked fine in my other unit.
Anybody had this same failure? I've replace 3 DC/DC boards in the same unit. It fails when the unit goes into standby or comes out of standby. I've changed displays, and inverter, with no change. I now just replace the open 2 amp surface mount fuse and the unit works for several months.