[Solved] Fujitsu Lifebook E558 USB / HDMI / DisplayPort / LAN / 3.5" jack dead

[Andreasbest]

Hello.
I just solved a mystery with the right USB or HDMI/Displayport or Ethernet or 3.5" jack of Fujitsu Lifebook E558 going suddenly dead.
I realized i had 6 pieces of the same model with the exact same issue, nothing on google, neither schematics so i had to dig in my self and provide feedback here in case someone else has the same issue.
I found out that the USB daughterboard is connected to the mainboard with 2 wide and non bending flex tapes that are 2mm longer than they should and this results in a constant pressure on flex connector and therefore eventually it cracks the solder and desolder completely.
I solder them back with more solder than Fujitsu and they seem pretty tight, time will tell though.

Keep in mind that replacing daughterboard is not a option for 3 reasons:
1) The flex connector can break in daughterboard either on motherboard, not guaranteed it will break on daughterboard only.
2) Daughterboard not available on second hand (ebay etc) , only new for ~100€ Including shipping
3) Fujitsu has used very little quantity of solder on the connector pins, imagine that in most pins i see clean copper, this means that even if you buy another it will crack again.

I attached some pictures to understand the problem.
I hope someone to find this useful

[Duranitron]

Hello.
I just solved a mystery with the right USB or HDMI/Displayport or Ethernet or 3.5" jack of Fujitsu Lifebook E558 going suddenly dead.
I realized i had 6 pieces of the same model with the exact same issue, nothing on google, neither schematics so i had to dig in my self and provide feedback here in case someone else has the same issue.
I found out that the USB daughterboard is connected to the mainboard with 2 wide and non bending flex tapes that are 2mm longer than they should and this results in a constant pressure on flex connector and therefore eventually it cracks the solder and desolder completely.
I solder them back with more solder than Fujitsu and they seem pretty tight, time will tell though.

Keep in mind that replacing daughterboard is not a option for 3 reasons:
1) The flex connector can break in daughterboard either on motherboard, not guaranteed it will break on daughterboard only.
2) Daughterboard not available on second hand (ebay etc) , only new for ~100€ Including shipping
3) Fujitsu has used very little quantity of solder on the connector pins, imagine that in most pins i see clean copper, this means that even if you buy another it will crack again.

I attached some pictures to understand the problem.
I hope someone to find this useful

I recently got hold of this laptop Fujitsu Lifebook E558.

Symptoms: Sometimes its ok, Sometime it hangs the system, sudden bump can cause the hang specially if you are using the HDMI as monitor, I am puzzled about the problem of this Laptop. erratic behavior of the usb, audio jack, lan port and HDMI port. and came across your thread maybe it my lucky day..😀😁😁😁
Thanks for the info its really a time saver and really solved the problem.
(the connector and cable really looks sturdy and doesn't suspect it to being the culprit) and planning to buy the daughter board. The flex cable is really thick and overtime will really lift the joint of the connector. I reflow all the connectors. and glue gun it to stay fixed hehehe GOOD JOB MATE!!! Thank you very much

[Andreasbest]

I recently got hold of this laptop Fujitsu Lifebook E558.

Symptoms: Sometimes its ok, Sometime it hangs the system, sudden bump can cause the hang specially if you are using the HDMI as monitor, I am puzzled about the problem of this Laptop. erratic behavior of the usb, audio jack, lan port and HDMI port. and came across your thread maybe it my lucky day..😀😁😁😁
Thanks for the info its really a time saver and really solved the problem.
(the connector and cable really looks sturdy and doesn't suspect it to being the culprit) and planning to buy the daughter board. The flex cable is really thick and overtime will really lift the joint of the connector. I reflow all the connectors. and glue gun it to stay fixed hehehe GOOD JOB MATE!!! Thank you very much

Really happy that i helped someone, it was very strange that none in google has ever talked about this while it seems to be a model fault, means that happens to EVERYBODY who owns this particular model.

I will try now to cut about 1 mm from each side of the flex, it will be better.

[Duranitron]

Thanks for the thread this is my first time to encounter this model. Keep on sharing.. Thanks again