I had the same issue with a a1989 unit I recently acquired. [br]
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[image|2401621]
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as you can see there’s horizontal lines across the display. [br]
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as you can see there’s horizontal lines across the display.
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[br]
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after removing the display assembly from the main body. I then removed the adhesive tape covering the contacts for the flex cable to t-con board on both sides. Then used flux and went over the contacts with fresh leaded solder. There’s tiny holes in each contact that flows the flux and solder thru onto the board side went over both cables a few passes with the solder iron to make sure it’s adhered and connected well. Replaced the adhesive tape covering the contacts with original one or uses kapton tape if original wasnt reusable. Then reassemble. [br]
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after removing the display assembly from the main body. I then removed the adhesive tape covering the contacts for the flex cable to t-con board on both sides. The. used flux and went over the contacts with fresh leaded solder. There’s tiny holes in each contact that flows the flux and solder thru onto the board side went over both cables a few passes with the solder iron to make sure it’s adhered and connected well. Then reassemble. [br]
[image|2401620]
Has been working fine for the last 48hrs. Not 100% how long the fix will last. Hopefully mixing in some leaded solder into the unleaded solder Apple used makes the repair last longer.
I had the same issue with a a1989 unit I recently acquired. [br]
[image|2401621]
as you can see there’s horizontal lines across the display. [br]
[br]
after removing the display assembly from the main body. I then removed the adhesive tape covering the contacts for the flex cable to t-con board on both sides. The. used flux and went over the contacts with fresh leaded solder. There’s tiny holes in each contact that flows the flux and solder thru onto the board side went over both cables a few passes with the solder iron to make sure it’s adhered and connected well. Then reassemble. [br]
[image|2401620]
Has been working fine for the last 48hrs. Not 100% how long the fix will last. Hopefully mixing in some leaded solder into the unleaded solder Apple used makes the repair last longer.