Recent content by wirelessplanet

water damage around camera lvds and wifi. getting only 5v and .04/5 amps on usb c PP3V3_UPC1_LDO - 3.23 PP3V3_S2_LDO - 0 PP1V5_UPC1_LDO_CORE - 1.583v PPBUS_AON - 12.29v 3V8_AON - 3.805v

Device came in clean with no liquid damaged. noticed L8430 was burned to a crisp. No shorts on either side so i replaced it and it got burned again. i honestly don't know where to go from here as neither side has a short.

checked all resistors in the area. also diode mode u6701/2 and 6700 all was in values

looks like c6270 and r6722 were fried to a crisp. replaced them both along with u6702 but still no keyboard or touchbar

trackpad is working on this with old topcase and new one. (it came with trackpad). this board has its own keyboard connection, and doesn't go through trackpad, however i may be mistaken. IPD_LID_OPEN diode mode checks with obdata values (.706) TPAD_3v3_SPI_EN is same. (.592)

board is pretty clean no liquid damage or corrosion. the keyboard and touchbar both do not work. i have tried with 2 known good topcases still no keyboard. i have 1.8v power on keyboard while on. diode values on keyboard pins match obdata values on flexboard view. could use a little help on...

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.