Philips DVP5960 Service Manual page 17

No display on VFD, and buttons do not work
No display on VFD, and
buttons do not work
Check whether there is
correct contact between
CON301 and CN6
check-24V+12V,VCC(+
5v)
power and front board
Check there are CS, DATA and
CLK signals on CON301 on the
front board.
1.Check whether bad solder exists
on U301 and pins of VFD,
2.Check
connected to K302, K303, K304
and K301 is broken,
3.Check whether R300, R301 and
R302 are open-circuit.
Replace U301 or VFD
Yes
Yes
voltage on the
Yes
Yes
whether the circuit
Yes
4-6
No
Correct connection
Fix power supply board top
No
a power supply for should
electric circuit
No
Check the U4's pin 92,94,95 arrive
the CN6 connect condition
CN6 (PIN 4 V.SCK)
No
Correct connection
Trouble shooting chart
CN6 (PIN7 VSDA0)