What is White Display?
Ans: LED Gold LCD is glowing means back bed is working fine but it is called 3Volts called VCC_lcd or say energy from Motherboard.
Possible reason: Cable may damage, laptop motherboard not sending to Screen pcb or screen pcb is faulty may be open on screen pcb.
solutions:
1. Open the Screen from its cover the cable to the screen and motherboard after checking cable physically. Check the 3volts supply on screen first if its present then screen pcb is faulty need to replace
2. If your cable is not present then check the cable connectivity with motherboard JP24 pin No.38 & 40 if your cable is so faulty so replace the cable.
3. If it is not present at CN24 Pin 38 & 40 or L21 then return to Q3 mosfet which is working as switch P type mosfet switching or not may faulty. if faulty replace it. if still not lcd_vcc / lcdvdd please follow the signal responsible for switching along with Q29 in their case.
Ans: LED Gold LCD is glowing means back bed is working fine but it is called 3Volts called VCC_lcd or say energy from Motherboard.
Possible reason: Cable may damage, laptop motherboard not sending to Screen pcb or screen pcb is faulty may be open on screen pcb.
solutions:
1. Open the Screen from its cover the cable to the screen and motherboard after checking cable physically. Check the 3volts supply on screen first if its present then screen pcb is faulty need to replace
2. If your cable is not present then check the cable connectivity with motherboard JP24 pin No.38 & 40 if your cable is so faulty so replace the cable.
3. If it is not present at CN24 Pin 38 & 40 or L21 then return to Q3 mosfet which is working as switch P type mosfet switching or not may faulty. if faulty replace it. if still not lcd_vcc / lcdvdd please follow the signal responsible for switching along with Q29 in their case.
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