Based on your additional details, this sounds like a board level issue. It’s probably booting to the OS just fine without the dock, you just can’t tell because there’s nothing on screen. Probably the touch functions are being detected, but not your display (even if it seems like the same thing, it’s two different systems).
Check and see if there is anything on screen when you shine a flashlight at it. It could be just the backlight is not working.
Ultimately this would probably be due to a previous repair attempt, but it’s hard to know since you are not the original owner. Either the connector was damaged, or something related to image power is not working. I haven’t done any board level work on these to know typical places to look, but give the board a good once over, especially in the area of the screen connector. And the cable too, to see if anything look amiss, or damaged.
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Add some pictures to your original post if you want a second opinion!
Based on your additional details, this sounds like a board level issue. It’s probably booting to the OS just fine without the dock, you just can’t tell because there’s nothing on screen. Probably the touch functions are being detected, but not your display (even if it seems like the same thing, it’s two different systems).
Check and see if there is anything on screen when you shine a flashlight at it. It could be just the backlight is not working.
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Ultimately this would probably be due to a previous repair attempt, but it’s hard to know since you are not the original owner. Either the connector was damaged, or something related to image power is not working. I haven’t done any board level work on these to know typical places to look, but give the board a good once over. And the cable too, to see if anything look amiss, or damaged.
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Ultimately this would probably be due to a previous repair attempt, but it’s hard to know since you are not the original owner. Either the connector was damaged, or something related to image power is not working. I haven’t done any board level work on these to know typical places to look, but give the board a good once over, especially in the area of the screen connector. And the cable too, to see if anything look amiss, or damaged.
Based on your additional details, this sounds like a board level issue. It’s probably booting to the OS just fine without the dock, you just can’t tell because there’s nothing on screen. Probably the touch functions are being detected, but not your display (even if it seems like the same thing, it’s two different systems).
Check and see if there is anything on screen when you shine a flashlight at it. It could be just the backlight is not working.
Ultimately this would probably be due to a previous repair attempt, but it’s hard to know since you are not the original owner. Either the connector was damaged, or something related to image power is not working. I haven’t done any board level work on these to know typical places to look, but give the board a good once over. And the cable too, to see if anything look amiss, or damaged.