Respuesta a "Backlight doesn't work after repair"Hello, behind the screen, there is a chip management of the screen, in case of indeterminate failure, it is advisable to change the chip, the screen, and the electrical tape, the pieces cost about $ 60. If the failure is still present, the graphics processor of the motherboard is probably defective. The repairer must know the reasons for the breakdown before repairing the unit.
Respuesta a "How to fix error 20"hello, it's a late answer, err 20 corresponds mainly to the mechanism of the defective mirror. but the shutter may be defective, (although err 30 should be displayed), or the motherboard if the device displays err 20 after wetting the device (but this is unlikely). it can also be an electronic problem on the lower board when exposed to water.