Philips DVP3680KX Service Manual page 15

Only DVD disc or only disc except DVD can be played
Only DVD disc, or only disc
except DVD can be Played.
Go
Check the
connection between
24pin and the loader.
Yes
Check whether the current of
R25,R26 is Less than 60mA for
DVD and 65mA for CD.
Yes
Check whether the components
between U1 and xp3 are eroded
or defect
Yes
Check whether the connection
of xp5 are eroded or defect
Yes
Change U1
FFC
No
No
No
No
4-5
Check the loaded circuit
Replace loader
Replace the bad spare parts
Replace the bad xp3
Trouble shooting chart
Free Datasheet http://www.datasheet4u.net/