Mein A71 hat plötzlich aufgehört zu funktionieren.
Ich hab die Batterie nachgemessen und die Konnektoren vom Main- und Sub Modul untersucht+gereinigt.
Das Handy geht immer noch in den 9V-Fast-Charge und bricht diesen ab, wenn man einen Reboot versucht. Es vibriert auch nicht mehr beim Laden. Die CPU wird warm.
Wo könnte das Problem sein?
Questa è una buona domanda?
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Hi @noah_m
Here's the Power ON troubleshooting flowchart from the service manual for galaxy A71 that may help.
There are also two images showing the location of the components mentioned in the flowchart. The left side image is zoomed in to show the component and the right side is of the entire board to give the location on the board.
(click on image)
Questa risposta è stata utile?
So I guess it's the mainboard then. Unfortunately, I dont have the skill to change the defective part. So I'd just swap out the mainboard. Do I need to change the IMEI number after replacing the pcb? if so, how?
The IMEI number is unique to each motherboard. So changing the motherboard means there is a new IMEI.
Not sure but in a lot of places transferring the IMEI to another mainboard is illegal since doing this can be used to give false information.
The new motherboard should come with information regarding what its IMEI number is etc
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@noah_m what exactly happens when you try a reboot? What voltage did you get on the battery? Any increase in voltage when you connect your charger? When you say that the CPU gets warm, is it excessively warm or just warming up like it gets power? Anything happened to the phone? Did it get dropped or any potential water immersion?
Translation
@noah_m was genau passiert, wenn du einen Neustart versuchst? Welche Spannung hast du an der Batterie gemessen? Erhöht sich die Spannung, wenn du dein Ladegerät anschließt? Wenn du sagst, dass die CPU warm wird, ist sie dann übermäßig warm oder erwärmt sie sich nur so, wie sie Strom bekommt? Ist irgendetwas mit dem Telefon passiert? Ist es heruntergefallen oder möglicherweise in Wasser getaucht worden?
da oldturkey03
I measure a voltage of 4.2V, which should be correct for a fully charged battery. The CPU is not overheating, it just seems to get to a "normal" temperature.
The phone seems to have been dropped on its upper left corner. However, the phone suddenly stopped working, not being directly connected to the drop.
da Noah M