Weird behavior after disassembly (Water Spill)

I disassembled my Macbook Pro 15" (Model A1286) because of water spill.

After cleaning and reassembling the Macbook won't work normal.

After turning on the HDD is going up, but the screen stays complete gray after the startup sound. I found the problem: it was the connector to Wifi and Bluetooth that causes the problem. After disconnecting that the Mac starts normally again. I come to the login screen but either the keyboard nor the trackpad are working.

I wonder why the ALT-Key is working after power on to get the boot menu.

The sound is also not in normal state: with balance to left, the sound comes out of the right speaker. With balance right, the sound stays right.

The fans show also an incorrect behavior: at any time the fans turn up to max and down. It is like a morse code: 2 times the fans are on short (about 1-2 seconds) and one time they run longer (5-6 seconds) and start over. I don't know what that could mean, can this be compared to the bios error codes?

A new try after resetting the PRAM: The fans are 5 times short (1 second) and one time long (12 seconds)

I already did a PRAM-Reset with an external USB keyboard but this didn't help.

I think it might be the logic board that could be broken, but what are your opinions?

A last thing: the keyboard backlight doesn't work over the whole keyboard anymore. You can see light at every place but there is at some places no light in the keys.

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I did a few tests with the tool from Apple.

With every time I get the following error code:

4SNS/1/40000000: TsOP-128.000

Some keys of the keyboard are working again, but the trackpad is still dead.


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Yes it sounds like cleaning and drying did not repair all the problems from your liquid spill. (Often it can not) It is not uncommon for some keys on a wet keyboard to still function. (Try a USB keyboard it may, or may not, function-if it doesn't points back to logic board failure) I don't know what error codes you refer to, you didn't list any. Running from Hardware Test may give you more detailed information.

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4SNS/1/40000000: TsOP =a failed (shorted, unplugged or dislodged in the liquid spill/cleaning process) sensor near palm rest making the fans run out of spec. ~128.000 RPMs- that sensor can be replaced but it's not IMnsHO a DIY task, desoldering, and re-soldering components on logic boards requires special soldering tools, solder, and a high degree of skill (lots of experience soldering printed circuit boards). It's sounding more and more like you need a replacement logic board and top case / keyboard / trackpad.


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