LP156WF6 lcd screen

[myth77]

I didnt repair led/lcd screens before from laptops...and to tell you the truth it was very rare that they were not working; either i got them broken or damaged lcd cable...
But now i have three LP156WF6 lcd screens with same symptoms...(different laptops) There is no short anywhere...all fuses are good and on lcd board coils i have 19v and 3 volt...nothing is getting too hot...but no picture and backlight. I checked with working screen and those laptops are posting picture, so this lcd-s are definitely dead.
My only conclusion is that the chips (i believe there are 2) on lcd boards are dead or something...and i have a few of similar broken screen lcd-s for chip replacement but i want to be sure that is the problem?! someone here more experienced in lcd screen repair? any advice?

[mon2]

Re: LP156WF6 lcd screen

Trace the cable end on the display. There should be a T-con board. In the past, have had good luck repairing these on the iMAC displays. Found shorted caps onboard. You can review the caps for their resistance, with no power of course. Otherwise ask some of the vendors that sell T-con boards on AliExpress for assistance. Mention this lcd panel. Just some ideas to explore.

[SMDFlea]

Re: LP156WF6 lcd screen

I didnt repair led/lcd screens before from laptops...and to tell you the truth it was very rare that they were not working; either i got them broken or damaged lcd cable...
But now i have three LP156WF6 lcd screens with same symptoms...(different laptops) There is no short anywhere...all fuses are good and on lcd board coils i have 19v and 3 volt...nothing is getting too hot...but no picture and backlight. I checked with working screen and those laptops are posting picture, so this lcd-s are definitely dead.
My only conclusion is that the chips (i believe there are 2) on lcd boards are dead or something...and i have a few of similar broken screen lcd-s for chip replacement but i want to be sure that is the problem?! someone here more experienced in lcd screen repair? any advice?

Post the full laptop panel part numbers such as LP156WF6-SPB1 , LP156WF6(SP)(K5) .Do you know what laptop models each came from,a few years ago there were some problems with win 10 and nvidia drivers bricking the EDID firmware.I posted some links to a thread at notebookreview which discussed the problem and fixes. https://www.badcaps.net/forum/showthread.php?t=76270 sadly notebookreview is no longer but you can use the waybackmachine to view the archived web pages https://web.archive.org/
.