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Repair information, troubleshooting tips, and guides for the sixth iteration of Apple iPhone, announced on September 12, 2012. Model: A1428, A1429

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iPhone 5 black screen beeps on charger

the phone simply goes black when i try to unlock him and when i put him on charger he starts to beep every few seconds and gets hot. then i reassembled and disconect the lcd flex cables and connect them again but the problem is the same. then i changed the few working lcds but he beeps again and gets got. then i chacked the logic board all connectors and components are ok. l41,l42.l43,l44,l45 are beeping that is good i think,and i forgot to say that the backlight is dim and se the light in dark room. can you help me somehow i dont know what the problem is?

the phone isnt water damaged or droped

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can anyone tell me where to look ?

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Hot = a short. Find and relieve the short. Beeping means a line is down at LCD

Connector find missing voltage, it is probably on the shorted line

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can you tell me where to star or what component to look ?

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Start by finding what is short to ground that shouldn't be. Compare to schematic. Start at LCD connector and work backwards using schematic

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i made it, the fauty component was c351 my screen now works and no beeps, you are the queen :D..... But i am facing with new problem :( my touch now work. i changed few screens and nothing , checked all component again, clean the connector and still not work??? what that can be? can you tell me some solution ??? i am very grateful with your help thanks alot :D

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Same thing--work backwards from touch connector and look for missing voltages. Touch rails are something like SAGE_5v7 and neg 5v7

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do i need to check rails with connected battery or disconected battery, or on or off phone ??

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Same thing happened when my phone screen broken. It beeped because there was no signal from lcd. Try with new screen, and check the lcd + digitizer connection on your phone clean it with alcohol.

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the whole board gets really hot when is on charger and when it beeps?

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Vladan Vojinovic will be eternally grateful.
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