A1466 820-00165 Fans running loud, system slow

it-solve

Member
Tried SMC reset, Voltages stable, tried bare board as well.

No signs of liquid, reflowed SMC in case.
Any suggestions
 

it-solve

Member
Yes tested with spare DC in board, havent seen these boards going loud fan when naked on the bench.

Did SMC reset too, forgot to mention
 

2informaticos

Administrator
Staff member
"havent seen these boards going loud fan when naked on the bench"
Fan increases speed in aprox 10-20s; and ALWAYS board alone does that.
 

it-solve

Member
Thanks for this.

I have replaced the trackpad and its cable. Still that loud fan. Tpad and keyboard are typing well. There was liquid sign around tpad, bbut no visible oxidation. No oxidation on the board either.

Customer reported this happen after a drop. I am trying to start diagnostic utility but no luck so far. SMC reset doesnt affect
 

2informaticos

Administrator
Staff member
LIO and trackpad boards have thermal sensors.
If swapped both, as their flex too, then try now disconnecting camera.
 
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