black screen and hot sometimes

[speedspeed]

hi
have multiple times a day black screen and need to pull the batery to get it going again
also sometimes the screen goes all funny

now i noticed sometimes it gets really hot on front and behind just under where the camera is
for example i factory reset and its getting really hot then

could this be the mainboard failing? and is it worth trying to replace the mainboard?

 

[B. Diddy]

When this happens, see if you can check your battery stats after a battery pull to see if any particular app was using excessive battery.

If you have an SD card, try Unmounting it (in Settings>Storage), in case the card or a file on it is corrupt. This can case overheating and other various issues.

Also try wiping the cache partition: https://support.t-mobile.com/docs/DOC-11017

 

[speedspeed]

this is after factory reset even in setup menu so no apps installed , and with sdcard removed

 

[B. Diddy]

It may very well be a motherboard failure. The only other thing I can think of trying is reinstalling the firmware, either using Kies, Smart Switch, or Odin:

http://forums.androidcentral.com/am...amsung-emergency-recovering-samsung-kies.html
http://forums.androidcentral.com/am...w-flash-stock-rom-via-odin-new-interface.html

 

[speedspeed]

already tried diferent firmwares
all the same problem

I think its the motherboard, ordered one

how hard its to change, looked some video and looks not too hard no?

 

[B. Diddy]

I'm afraid I don't know anything about switching out motherboards, sorry!