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4-inch iPhone released in March 2016 with similar hardware specifications to the 6S. Available in Silver, Space Grey, Gold, or Rose Gold with 16/32/64/128 GB storage options. Model: A1662 and A1723

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Opties

Screen not firing up

Phone came into the shop yesterday and this could be bad

Unit seems to have no power and will not turn on

1. Tested Battery over half charged

2. Plug in charge cable Phone gets slightly warm after about 10mins charge

(normal and charging)

3. Changed Screen no change

4. Plugged into itunes itunes sees phone

5. Put on another screen (both new) no change

6. Checked main board no damage to connectors

Starting to get worried for this phone, anyone have any ideas ??

Cheers

Beantwoord! Bekijk het antwoord Dit probleem heb ik ook

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Opties

have you tried power cycling the phone? pop the battery and press the power button then plug back in.

if that doesn't work you could have blown the backlight chip by changing screen without disconnecting the battery first.

rip the backlight off a working screen and shine a torch behind the lcd to confirm

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Thanks for the quick answer, I new as soon as I posted this I should have mention rule 101. Isolate power source. Sorry.

Yes I did isolate the power source and i have disconnected the battery and retried to start the phone to no avail

door

no problem, next step is to tear the black backlight off the back of the screen you won't damage anything so don't be scared then you will be left with the lcd with you can shine a torch thru and see if the lcd is working

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Ripped a good screen off one and no back light. Looking more like the Backlight circuit problem

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If iTunes recognizes your device and multiple screens don't work, then check the LCD with a flash light. If you see a dim image, then it sounds to me like you have a blown backlight circuit on the logic board. It's usually the filter but it can also be the rest of the circuit.

It's either the screen or the backlight circuit on the logic board. If you have access to a known-good screen, try that first. Otherwise, you will need to find a reputable shop that does micro-soldering.

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Thank you for your time, great help. That is why I like this forum. Working alone in a shop you don't always have the answers and it is great to "put it out there" To this great pool of knowledge

Thank you again

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My pleasure!

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charlieclemett zal eeuwig dankbaar zijn.
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