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What is the voltage to ground of IPD_LID_OPEN?
The lid sensor works with the trackpad.
Also, from post #12, do you see the graphics on the lcd?
Double check your parts in this backlight area and the soldering of this backlight IC. Post pics of this reworked area of the logic board.Last edited by mon2; 04-14-2024, 07:00 AM.Comment
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I did an hdmi port repair for a PS5 and I lost the small diode z71 SOD923 on the back of the port. I did a trace repair for pin 19 of the port as well. Without the diode I get no display at all. I tried replacing the diode twice but after I get flux on it the marking comes off so I can't tell if I have it on the right orientation. When I measure I get a reading of 1(open) and 923 in diode mode. Is 923 a normal reading for these and also which side should the reading be with regards to the arrow on the board?... -
Have an A2141 which is reading about 5.2V 0.07A on all USB jacks, started doing the measurements.
PPBUS_3GH diode: measures good .45V
PPBUS_3GH Voltage: maybe not so good 12.25V maybe bad T2? Unit did not come up in DFU on configurator.
The weird so far is
PP3v3_G3H_RTC_X diode: .104V (WTF?)
PP3v3_G3H_RTC_X voltage: 3.39V (Normal)
Stopped there attempted reverse voltage injection at PP3v3_G3H_RTC_X with 1V. Instead of the circuit sinking any current, My PSU suddenly reads 3.4V with no current draw.
Not sure what any of this means... -
Wow it's been a while since I posted!
This is a weird case, it has a history of liquid spill a year ago but customer did not want to replace neither trackpad or keyboard.. fast forward for today:
A2681 turns on but not trackpad or keyboard feedback (or external keyboard and mouse) and then after a minute or so the Mac sleeps..
It's a NOT a sleep sensor or trackpad or keyboard or daughterboard or anything else (I replaced all those); it's the logic board..
Tested another locked logic board on customer's top case and it posted with keyboard and...05-22-2025, 09:59 AM -
Hi there, I need some help identifying replacements for a Launch Diagnostic Plug In Tool. I can't seem to find any information on the LF 7HZPU Diode so I have no idea what to replace it with if anyone can help? Also there is a missing component on the side that I highlighted in green and I assuming it's a cap?
I have added some photos for reference.... -
I am working on this board that has some water damage though not around this rail but I measured it anyway to rule out that CPU is not fried.
Resistance to ground on PPVCC_S0_CPU rail is 2Ohm and in diode mode it shows 0V.
What is the normal reading on that rail?
TIA
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