Acer P244W Service Manual page 51

3. Check LED Board
Checking LED
Board
Working ?
Button switch and traces
OK ?
Components
LED board OK ?
Check CTRL
board OK ?
Replace a new
interface board
Yes
No
Yes
No
Yes
No
to
Yes
No
Yes
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Replug the LED
wire, then retry
Replace the LED
Board, then retry
Replace the
components, then
retry
Replace the CTRL
board, then retry