I have a strange problem with my iPad Pro 12.9 4Gen / A2229. When I start the device, it stays on the Apple logo, but when I heat the back of the device with a hair dryer, the device boots, but this time there is an interesting problem. The iPad is charging, but there is no USB data on the computer. The USB charging port has been changed and the chips seem normal, but I have given it to 2 different Apple services in Latvia, but the repair could not be done. Is there anyone who can help with this? Can someone support the repair by sending only the motherboard within Europe? Thank you.

i have a problem with thinkpad X1 carbon gen 2 "LMQ-1MB 12298-2 48.4LY26.021"
The laptop was turned off because the MOSFET was not transmitting voltage. After checking it turned out that the gate pin on the MOSFET was the problem, because it was producing an inappropriate voltage. and it was discovered that the problem was with the Think engine, so I decided to reprint each pin, and finally the mosfet could work properly. However, there is another problem, even though the voltage has been supplied to the laptop, it still won't turn on, there isn't even an LED indicator. After double...

Hi,

I'm learning about motherboard repair and I believe I've traced the issue down for the South Bridge on the particular motherboard I'm working on. My path of concluding that:
- There's no sign of any attempt to power on when pushing the power button.
- No PSON signal is reaching the 24-pin ATX connector.
- The Super IO chip is receiving the PS_SWITCH signal from the power button and is relaying this signal back to the South Bridge.
- The Super IO is not receiving the S_SLPS#_R signal back from the South Bridge
- If I pull the Super IO S_SLPS#_R pin...

Hello, I have a Dell 15R-5521, with the problem that the Ctrl, Alt, Shitf and Num Lock keys do not work, I tested the keyboard with a keyboard tester and it is functional, I also got another new keyboard and the computer has the same problem with the same keys. Check continuity between the ZIF connector from the keyboard to the KBC and all pins are correct. I cleaned the ZIF connector and the KBC and I still have the same problem. I reinstalled windows just in case, and it didn't work. I updated the BIOS to the latest version A16 and there were no changes.

As additional information,...

Recently, I have started to encounter a problem with Lenovo E15 Gen 2 models not opening. When you try to open the device, it gives a warning sound and does not display an image, when you apply light pressure on the keyboard, the image appears and works for a while, when you turn it off and on, the same thing happens again. Bios was tried, RAM slots were cleaned and soldered to the legs, the problem still persists. There seems to be a problem with the onboard processors, but since Lenovos glue the processor firmly from the sides, the paths are very damaged when removing it. Has anyone encountered...