MacBook Pro 15 inches A1990 No Backlight repairs

[@ProvakorKonik]

24:35 Problem Types 25:22 Check short on back light output capacitor 26:20 test capcitor by multimeter 43:25 Backlight Explain 46:00 fuse check

[@Hüsrev_Ağa]

thanks for the video i've question my keyboards backlight not working completely, left part not working and right part not working stabile(but the keys and capslock light working) what should i do for fix it? and can u share the motherboard schematic?

[@resetlab7142]

@@Hüsrev_Ağa hello my friend, do you have an A1990? If part of the keyboard backlight works , that suggests that you don’t have a circuit problem but a keyboard backlight sleeve problem, I will first replace that before anything else , and which schematic+board view do you need ?

[@Hüsrev_Ağa]

@@resetlab7142 Actually, I don't really need it, but while watching you in the video, the program you used caught my attention and I wanted to tinker with it a bit. and yes A1990

[@MinhHa-dv4it]

Hello, is this applied for both Macbook pro 15'' 2018 and 2019? Thank you.

[@resetlab7142]

@@MinhHa-dv4it yes , both

[@spwoofandrea3293]

Hello! Great video! I learned a lot! I have a A2485 with the same problem. No backlight. I tested everything, and I am almost changing the UP800 chip... But before do that, I'd like to know if is there anything else to searching for. Or maybe try DFU recover first? could you help me? Thanks

[@resetlab7142]

@@spwoofandrea3293 any device history?

[@spwoofandrea3293]

@@resetlab7142 Hi! the equipment was purchased in a sealed box from a seller who was closing up shop. The equipment has been used for 7 months and has never suffered drops or spilled liquids. The backlight simply turned off during normal use. The equipment works normally via HDMI and it is possible to see background images on the screen. Thank you for your time. NEW! The problem is exactly this one on video: Blurry Screen: kzbin.info/www/bejne/n4SonJVootqIj80

[@alfredmarkamposadas5178]

thanks for this vidoes i learned a lot.. i am current fixing a macbook 820-01041.. mosfet is not open no 12v on the output..

[@resetlab7142]

No backlight repairs? What do you have on your diode mode on the backlight output?

[@alfredmarkamposadas5178]

@@resetlab7142 1.1

[@alfredmarkamposadas5178]

@@resetlab7142 i am missing enable signal from my u8400 try another cable and lcd but still same ..

[@ayoubdjabri4493]

اللهم صل على سيدنا محمد وعلى آل سيدنا محمد ❤