Hy everyone.
I have a Fairphone 3 and this morning, liing on the table it stopped workng. Research - sudden death seems to be the case. Replacement of accumulator, bottom moduel, top module … nothing changed:
The phone showed no reaction to anything. No LED when USB-Charger is plugged in, no reaction to any button or button combination. I found the following thread:
I thried to twist the phone slightli - nothing happened. I connected the USB Carcher and gave pressure to several points on the motherboard to see if the LED lights somewhen up - nothing happend. I spent some time with a “professional” Mobile phone emergency repair store just to realize the guy knows nothing about fairphones.
I found this thread:
So I had nothing to loose → The thread proposed to bake the motherboard to resolder a possibly disjunced solder part. AND IT WORKED FOR ME! Thank you @ElKrasso!!!
I took the fairphone apart until I have the motherboard naked on the table. I heated up the oven to 200C°. I put the motherboard in the oven for 8 Minutes. Then I opened the door and waited for 2 Minutes. I took out the motherboard, let it cool down, reassembling the phone and tadaaaaa - it started as if nothing had happened.
Of course i have to repeat the warnings: with this procedure you can damage your phone - and as an electrical engineer I think not the heat is the most dangerous part (ESD). But to repeat the words from @ElKrasso : If you have nothing to loose it is worth a try! I just wantd to share this experience. If someone is lost as I was it this morning it can probably help…
Thomas