Trouble Shooting Chart - Philips BDP2985/F7 Service Manual

No display on LED, and buttons do not work
No display on LED, and
buttons do not work
Check
voltage on PSU, main
board and LED board is
normal
Check whether every pin
of XP1 on KEY board
connects well to main
board
1. Check
component or soldering exists on
LED board,
2. Check
connected to the keys is broken.
No
Replace the LED driver IC, LED, or the
whole LED board
Go
every supply
Yes
Yes
whether any bad
whether the circuit
5-1
Fix the open circuit or short circuit
No
which may exist on PCBs and
cables
No
Fix XP1
Yes
Fix the PCB or bad component

Trouble shooting chart