209100B1 LCD Backlight Boost IC for MacBook Pro 14 / 16 (Late 2021)

$8.92

per unit

Volume pricing
Quantity	Unit price	Saving
	$8.92
	$8.47	−5%
	$8.03	−10%

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Shipping & returns
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Shipping weight 0.01 kg

Compatible with 2 models

Match the model number printed on the device (Settings → About, or on the back) before ordering.

Details

A MacBook Pro 14 that chimes, shows up on an external monitor and leaves its own panel black could have a backlight fault. Shine a torch at the screen and you'll often see a faint image. The 209100B1 is the 36-pin BGA backlight boost regulation IC listed for that machine and the 16-inch from late 2021.

The listing names the A2442 (14-inch) and A2485 (16-inch). It doesn't give a board position.

When the backlight circuit is suspect

Black screen with a faint image under a torch.
Backlight that flickers or cuts out.
No backlight after liquid near the hinge.
A short on the backlight supply.

Board work

Check the display connection and lid angle sensor first, since a damaged display flex causes similar faults. Then measure the backlight rails against the schematic. On these machines, disconnect the battery and use board view to find the chip.

BGA work on a dense board needs steady bottom heat and a nozzle that covers the chip. Reball or fit the new part on fresh flux and test the backlight at full and low brightness.

Specifications

Condition	New
Part number	209100B1
Part type	LCD backlight boost regulation IC
Package	BGA, 36 pin
Compatible devices	MacBook Pro 14 (Late 2021), MacBook Pro 16 (Late 2021)
Model numbers	A2442, A2485