Power Led Blinks 7 Times - Panasonic GP6DU Technical Manual

Power LED blinks 7 Times

No
Does the
voltage at
TPSOS1 (L604)
go low?
Yes
Is the red LED
on the SC board
lit?
No
Replace the SC board.
Note: Both, the SU and the SD boards may
load down the SC board. Isolate them before
replacing the SC board.
Check voltage at TPSOS1 using a
peak-hold meter.
SC board
103
Yes
Replace the "D" Board