iPad pro A1652

[kingskie]

hello,

does anyone have schematic and boardview for iPad pro A1652.
i have problem with no image and backlight.
before the 0.7 ohm coil for image was burnt and i replace with coil from iphone 6 but it burnt again, and i replaced with coil from 6s plus but now no image at all. please advice

[mon2]

Re: iPad pro A1652

What is the current draw? Perhaps the backlight fuse or backlight IC is now defective?

[kingskie]

Re: iPad pro A1652

hi @mon2,
current draw on usb meter 1,8 amps and i hear ding sound.
backlight fuse is beep when test with continuity mode

[mon2]

Re: iPad pro A1652

https://www.youtube.com/watch?v=jhbr4qVc65Q

Check for missing / defective parts in the attached pic.

[kingskie]

Re: iPad pro A1652

https://www.youtube.com/watch?v=jhbr4qVc65Q

Check for missing / defective parts in the attached pic.

already check, filters and coils are ok.

or maybe the amps of the coil i changed is different?

[mon2]

Re: iPad pro A1652

Yes, be sure to use the proper rated coils. Not sure if the parts you have applied are able to handle the required current. Start with replacing them again but with confirmed higher current components. Vipphonefix and similar shops in China sell coil and diode kits for this type of work. Confirm before buying.

[kingskie]

Re: iPad pro A1652

Yes, be sure to use the proper rated coils. Not sure if the parts you have applied are able to handle the required current. Start with replacing them again but with confirmed higher current components. Vipphonefix and similar shops in China sell coil and diode kits for this type of work. Confirm before buying.

do you know the amps value of these coils for backlight and image? because from the picture it only shows the value in ohms

[mon2]

Re: iPad pro A1652

Remove all power.

Do connect the lcd display.

Meter in resistance mode. Measure the resistance to ground of the coil that was burnt and do measure each side of this coil to ground. This is to confirm there is no short.

Review this great article from Jessa:

https://www.ipadrehab.com/article.cfm?ArticleNumber=7

[kingskie]

Re: iPad pro A1652

update:

i changed the flexible and the image and backlight is ok except for touch...sigh.
checked filters and coils all are ok.

any suggestion?

[mon2]

Re: iPad pro A1652

Fault may be with the touch IC but first watch the related videos from Alex at Northridge repair on this topic.

http://www.elemasterxu.com/store/BCM...ouch%20ic.html

https://youtu.be/FTHU7MD2rTA

https://youtu.be/tSTpd6M1Ep0

[kingskie]

Re: iPad pro A1652

update:

i decided to resolder the flexible and the touch is ok now.

thanks @mon2

[mon2]

Re: iPad pro A1652

Good job 👌

Thanks for your update for the thread closure.