changing the polarzing film of LCD
after doing some research, I understand that LCD film can be degrade by light, then screen turn to black or blank. And there are 2 films in a LCD module, one on the top, one on the bottom with reflecting face. trick is to heat up before peel off, sometimes, glue residue can be slowly remove with alcohol. take your time, don't crape it by force, it may leave track on LCD glass. if you can light up machine after remove the film, then it's easy to find the orientation of replacement. If not, try to find the most bright diection when 2 are stack up. it should be the correct direction. 1. 9XR RC remote nothing show on the screen, after open it, it's the top film failed. slight heating with hot air gun. nothing on the screen after changing the upper film, it looks good with external light. but the back light seems very week in dark. 2. coreless phone: this one shows nothing, my first try is to replace the back side film. JP stuff, quite delicate, can see a pop on the back side f...
