Repareer je spullen Gemeenschap Winkel

Released September 22, 2017. Model A1864, A1897. Available as GSM or CDMA, 64 or 256 GB Storage Options, and the color options are gold, silver, and space gray.

677 Vragen Bekijk alle

Opties

iPhone 8 Plus Backlight/Black Shadow Problem

Hey!

My iPhone 8 Plus has a black shadow on the right bottom corner of the screen after I changed the LCD Screen. Could this be a bad Backlight IC? If yes where is the Backlight IC on the motherboard and would changing it fix the problem like it does on the other iPhones. Couldn’t find anything on the internet for the 8 plus regarding the issue I have.

Thanks,

Fahad

Update (08/27/2018)

I checked the motherboard and turns out the pin 45 was bad on the J5700 connector. So I flipped the board to check the fiter/fuse and the small C5733 is bad. What do I replace it with?

Block Image

Beantwoord deze vraag Dit probleem heb ik ook

Is dit een goede vraag?

Ja Nee
Score 2
Voeg een opmerking toe

4 Antwoorden

Filteren op:
Meest nuttige Nieuwste Oudste
Het nuttigste antwoord

Opties

The shadow is because you have one of the two strips of LEDs that make up the backlight not working, and it is usually not working because it has an open line in this scenario. You create an open line on the backlight circuit either through damaging a pin at the connector, or connecting a screen without first disconnecting the battery which can blow the backlight filter, or if you have a water damaged induced short (or spontaneously occuring) on one of the two backlight circuits.


You’ve already ruled out bad screen which was another possibility, so you know this is a logic board repair. You can either buy all the equipment and learn how to do microsoldering and board level troubleshooting (iPhone 8p backlight is not bad for a beginner project), find a local microsolderer or use a mail-in logic board repair service.

Was dit antwoord nuttig?

Ja Nee
Score 2

2 opmerkingen:

Yep the lower right backlight strip is probably not working. Where is the BL IC/Filter on the Motherboard since I can’t find it online.

door

Look it up on the schematic. If you need help, then tell us what you are thinking as you look at the schematic and we will let you know if you're on the right track. Start at the connector and try to figure it out.

Step one is to figure out if you have a short or open on the backlight anode and cathode lines for either backlight circuit on the 8 plus.

door

Voeg een opmerking toe

Opties

theres a chip on the lcd flex in the lower right area, it maybe isnt aligned properly and causing it to push on the lcd

Was dit antwoord nuttig?

Ja Nee
Score 1

3 opmerkingen:

Nope, Installed the old LCD back and same issue. Lower right has a black shadow.

door

did you try the screen without clipping it in to see if the shadow is still there

door

Yes it was there when out too.

door

Voeg een opmerking toe

Opties

Is the backlight coil is a long ic located next to the charging port conector. Put pressure on it and see if the black shadow goes away.

Was dit antwoord nuttig?

Ja Nee
Score 1
Voeg een opmerking toe

Opties

just replace it the U5600 ic problem slove

Was dit antwoord nuttig?

Ja Nee
Score 1
Voeg een opmerking toe

Voeg je antwoord toe

Fahad Zareef Khan zal eeuwig dankbaar zijn.
Weergavestatistieken:

Afgelopen 24 uren: 0

Afgelopen 7 dagen: 12

Afgelopen 30 dagen: 15

Altijd: 10,468