Recent content by wirelessplanet

Board was liquid damaged. turns on with charged battery. usb c connector was burned so i soldered on a new one. it will now get 20v but will not draw any amps with or without charger. kinda don't know where to start with this one.

board turns on for half second, either see battery logo or apple logo, then disappears with only backlight. i've tried putting in dfu many times but was unsuccessful. is drawing 20v with .22 amps constant.

ended up being that stupid little lcd flex cable.

new lcd same issue

i ordered a used lcd from ebay. ill let you know.

not much history available, but board is clean. this has been in my box of boards to fix when have free time(most likely customer wanted a board replacement). Looks like C9081 was shorted, because it was removed to probably get data. internal image working. external image is working. usb is...

board is booting up but has no backlight. tried with another screen (although i'm not sure if that was a known good) and still has no backlight. PPvout_s0_lcdbklt isn't short. would appreciate some help on this one.

never mind. fixed the issue. pin 18 trace was going in and out and i redid that connection. all is working now.

Got a board that had liquid damage. i replaced q7680 because it was really corroded. laptop turns on but have no trakpad or keyboard. have repalced both with known good topcase.

thanks, fixed

Can someone please post a working u2890 rom. I don't have a donor to swap, so i just want to reprogram the rom and see if it fixes my issue. on usb charges and upvolts to 20v other stays at 5v.

both are working? just curious whats the difference?

Couple of corded capacitors right next to u9850. I want to replace u9850 as well to be on the safe side but when i go to digikey there are two different TPS62180. can someone help me choose the correct one? thanks!

yes always working and showing up when headphones connected. can i post a video link so you can see?