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inserting 1V means I will connect 1V lab DC power supply to the F5200:2 point and ground line to the ground point on board. Can you tell me how to find it? Using thermal camera? I need your guidance at this step. Thank you.

Hi. Here are the measurement. What do you think about them? LN480 - 0.31 kohm LN980 - we dont have this could on the board L5230 - 0.55 Mohm L5840 - 0.49 kohm L5820 - 0.31 Mohm L5800 - 0.25 Mohm LF800 - 0.30 kohm LP800 - 0.23 Mohm

Resistance is 0.25 MegaOhm between ground and F5200:1 points. Resistance is 0.11 Ohm between ground and F5200:2 points.

We checked C5251 and C5250 capacitors. There is voltage. Yes you are right. Short remains on PPBUS_AON. But there are many elements. How do we proceed to find the next issue. Thank you.

So we removed both F5200/01 from the board. Checked C5200 and C5201 first leg and both of them shows 12.3 vdc. What should we do next? Looks like there is short somewhere. Please advise how to proceed next. Thank you

I did not know there is 138C solder paste. I just ordered and I will have it tomorrow. Thank you for helping me. I will not write any voltage unit when I measure for diode mode when. Pure short is the problem. It should not be pure short. So I will remove F5200 and check C5200, post it here...

Diode mode to ground is missing as well. It shows 0.0001 mvdc for PPBUS_AON and 0.3 mvdc for 3V8_AON. I put the multimeter on diode mode, put the red on ground and black on element. Also we tried to remove F5200 from the board but 420C hot air cannot remote it. It does not get melted. It...

Yes the same behavior on Magsafe 3 port. Voltages for PPBUS_AON and 3V8_AON missing. Please advise what to check next? thank you

Hi, Sorry for inaccurate information So laptop doesn't charge and doesn't turn on at all There are 3 USB-C ports and all of them use 5.21V 0.03A

I need your help in this situation to move forward and to troubleshoot the issue. Please advise what to check. Thank you. See attachments as well

Hi guys, We have Apple MacBook Pro A2442 and the laptop don't charge. We checked all ports with USB-C meter. All ports uses same volt and ampere (5.21V 0.03A). We removed the Logic Board from the laptop. We inspected the Logic Board and could not find any visible damage.

Hi, Sorry for late response How can we enter the DFU mode in this iMac? By the way, we opened the iMac and checked the Logic Board There is no visible damage on Logic Board but Logic Board doesn't heat Thank you

We connect just motherboard to the Apple Configurator and DFU mode is not detected.

Diode mode testing results: L9080 - 0.2250 vdc L9580 - 0.3000 vdc L3500 - open L7700 - 0.2431 vdc LB700 - 0.2214 vdc LB150 - 0.2902 vdc L9521 - 0.3357 vdc L9520 - 0.3400 vdc L9530 - 0.3620 vdc L8410 - 0.8567 vdc L6960 - 0.4036 vdc L6961 - 0.4036 vdc L7660 - 0.3650 vdc L9030 - 0.4136 vdc L9020 -...

Hi guys, We have Apple MacBook pro A2141 that has water damage. We removed the Logic Board from the laptop. USB-C meter showed the volt switches to from 5 to 20 volt. Ampere is goes 0.05 ~ 0.09 ~ 0.25 then backs to 0.04 amp. We inspected the logic board and found water mark and corrosion. I...

Customer says iMac shut down, won’t come back on. That is what happened. We cannot use USB C meter to see what is happening with voltage and amps. Any advise on this? Plus should we remove mainboard from iMAC. We have never done any work with it that is why I am asking this question. Is...

Hi guys, I have new iMac A2438. The iMac don't turn on. Just black screen. What can we do? Please advice Thank you

We are missing PP1V2_AWAKE and PP1V1_SLPS2R. What can we check next? Thank you.

Hi. Sorry for late response. PPBUS_G3H and 3V3_G3H_RTC are missing. What is next? Thanks.

The laptop easily goes to Disk Target Mode and displays the USB sign on the screen. I am using charging cable to connect but it is not connecting. Is it possible that I should use thunderbolt cable?