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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > iPhone ,iPod & iPad (Apple Inc. Products) > iPhone, iPad, iPod Hardware Repair

iPhone, iPad, iPod Hardware Repair Hardware Repair discussions for iPhone, iPod , iPad & Apple Products, help, guides.

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Old 06-15-2017, 19:25   #1 (permalink)
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Iphone 6 backlight trolling me


Got iphone 6, backlight driver was the problem, i decided to replace all circuit as diode was burnt out, i replaced all circuit, back light came, put phone together n after few minutes backlight went again. Checked anode linne filter which was ****n , replaced that again but no backlight, then i replaced backlight driver again, now PP_Lcm__bl cat1 line is short to ground, i removed the filter , backlight ic, and even though cap c2018 which is near to connector, but line is still short, any one got idea what could be the reason?


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Old 06-18-2017, 15:40   #2 (permalink)
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Check all capacitors on this line... not remove, replaced it. I had similar problem. When you remove capacitor your backlight diode or ic will burn. I think now you have to replace backlight ic. But remember to check all capaciotors and replaced if short. I hope this helps.
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Old 06-18-2017, 20:37   #3 (permalink)
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i ve recieved same a burnt diode from one side i hdnt repair it before need solution tht how to rebuilt circuit and part tht i ve to change


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Old 06-18-2017, 21:14   #4 (permalink)
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Burnt diode is caused by anode line , most likely anode line gets short cos of three caps on the line. Check those caps and replace the faulty one n then replace diode , you ill get your backlight. Mine case was different, i had internal short in lcm cat 1 so i jumped that line ..


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Old 06-18-2017, 21:16   #5 (permalink)
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if donot replace the cap and change the diode will it burnt again ? bcose i dont hve another cap to replace


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Old 06-18-2017, 21:18   #6 (permalink)
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Iphone 6 backlight trolling me

It ill burn the diode again. You don't have any other donor board? Get cap from any dead donor board..


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Old 06-18-2017, 21:19   #7 (permalink)
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thnx i ll try it in morning and if the line is not short or the cap then i only have to change the diode


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Old 06-18-2017, 21:21   #8 (permalink)
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Yeh, but that is highly unlikely, cos diode always gets burn cos of short as I explained before.. Good luck


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Old 06-19-2017, 20:18   #9 (permalink)
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Quote:
Originally Posted by shani1122 View Post
Yeh, but that is highly unlikely, cos diode always gets burn cos of short as I explained before.. Good luck


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i ve change the diode replace the caps and tracks are ok but light in lcd


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Old 06-19-2017, 20:39   #10 (permalink)
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Quote:
Originally Posted by mohitkhurana93 View Post
i ve change the diode replace the caps and tracks are ok but light in lcd


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You got backlight?



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Old 06-19-2017, 20:42   #11 (permalink)
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no


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Old 06-19-2017, 20:43   #12 (permalink)
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Ah ****, then you need to replace backlight ic..


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Old 06-19-2017, 20:59   #13 (permalink)
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Iphone 6 backlight trolling me

Quote:
Originally Posted by shani1122 View Post
Ah ****, then you need to replace backlight ic..


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if it also doesn't work next step? bcoz its 2nd time trying to repair back light but didnt got succesful need proper solution



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Old 06-19-2017, 21:19   #14 (permalink)
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That ill work 4 sure. I know its bit tough when you are new in micro soldering but thats how you learn. Try to wiggle out the actual problem. I got one phone same like yours today,i already replaced faulty cap and diode but still no backlight. i m also going to replace backlight ic tomorrow or after tomorrow. I


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Old 06-19-2017, 21:35   #15 (permalink)
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shall i wait for ur result or try mine


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