Das iPhone 6 Plus mit dem 5,5 Zoll Display ist die größere Version des iPhone 6 und seit dem 19. September 2014 auf dem Markt.

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No touch after touch IC replacement (LCM_TO_AP_HIFA_BSYNC short)

Hi guys,

recently i repair iPhone 6 plus with not touch, I replace Meson and Cumulus, but touch still does not work. After measure, i found shorted line LCM_TO_AP_HIFA_BSYNC to ground. After remove FL2034 is line still shorted to ground on CPU line. I remove U2403 and Meson but does not help.

Is there any solution how to repair this issue without reball CPU?

Thanks

Sorry for my bad English.

@refectio

Beantwortet! View the answer Ich habe das gleiche Problem

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Gewählte Lösung

The current best practice on repairing Touch Disease on the iPhone 6 Plus is to solidify the M1 pad (which is the LCM_TO_AP_HIFA_BSYNC line). That pad tends to lift, partially or totally when removing Meson. If you didn't jumper it, then it may have moved and is shorting with the adjacent pad which is ground.

Jason from STS did a great video on this earlier this year (with a few follow up videos as well). I encourage you to watch them.

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This line is shorted to ground also when i remove meson. I still think, there is short under CPU. Normal resistance is 500-600 and this board have 0.

von

Is C2001 under fl2034 ok as well? It is part of that circuit too.

I'd even check r2406 and remove cumulus...they look connected through the U2403 and not sure they would still be once removed.

von

I removed:

C2001

U2403

Cumulus

Meson

and there is still short.

von

That sucks...does sound like cpu or sub layer trace.

von

Is here any solution how to bypass this traces and fix this phone?

von

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Tomas wird auf ewig dankbar sein.
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