Chosen Solution
Hello, I changed my battery and since then my left fan is running at full speed. I ran a diagnostic and it says it was an error PPF004. I also ran TG Pro and it said my left fan is running at full speed. What can I do to solve this problem? Thanks Edit: Pictures of my fans connectors
Edit 2: Missing component repaired but the fan is still running at full speed
If it’s only the left one this is likely to be an issue with the connections. Retrace your steps. Especially if you took the whole board out. Reseat your keyboard connector, since it is the conduit for fan signals to and from the board. Make sure none of the pins here are bent or damaged, or inadvertently got any solvent on them or other debris (assuming you used something to loosen up the adhesive). Check both the cable side of the connector and the board side. Of particular note would be pins in the middle of each row, the left fan tachometer pin is the 9th one in from the left on the bottom row. If for whatever reason you took the fans out, reseat those connectors too. If you didn’t take your board out, same steps still apply, but I would take it out and make sure that no solvent got into in any place it wasn’t suppose to. On the other side of that trackpad connector are some components involved in fan speed regulation, so they could have been damaged. EDIT to include pictures of where the the Q6000 and Q6050 transistors and affiliated components are located, which are responsible board side for fan regulation.
The error implies the fan its self has a problem. Is TG Pro only showing one fan is encountering an issue? If it does then you need to inspect the ribbon cable and the connector of the given fan.
