Rear Camera black/purple lines

Question

iPhone 6

Introdotto il 19 settembre 2014, questo iPhone con schermo da 4,7" è la versione più piccola dell'iPhone 6 Plus. Identificato dai numeri modello A1549, A1586, and A1589.

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Roger Høiås @roger_hman

Rep: 13

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Postato: 18 giu 2018

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Rear Camera black/purple lines

iPhone 6 came in with purple vertical lines when choosing the rear cam. Changed it with spare, went all black afterwards.

Ordered a new rear camera part from Ifixit, Same problem! Black!

Front camera works fine, and by hitting the Change camera icon several times I get the purple artifact on the rear cam.

Now I’m thinking this is a board issue, so before I start with the micro tweezers I thought I should ask if someone in the community has encountered this before?

I have checked if the screws holding the LCD connector cover have been put in the wrong nut standoff and penetrated the motherboard, but no luck there!

Cheers!

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Roger Høiås @roger_hman Rep: 13 R-tec 2 1 · Answer 1 · 2018-07-19T22:33:44-07:00

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Roger Høiås @roger_hman

Rep: 13

R-tec

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1

Postato: 19 lug 2018

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Hi,

After doing som diagnistic I found that the problem was related to PP2V85_RCAM_VDD. When I got the red lines this voltage was alternating. When the cam was black this voltage was zero.

I changed the LDO U2301 without any change. So my guess is there is something wrong with the enable signal to the LDO from the A6. This is a straight trace without any vias, so monetoring this signal is difficult.

This phone was not worth any more fault finding, so I have not got a 100% answer for the problem, but the 2.8 voltage was not present when the rcam was black so this signal path is my best guess;)

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