Samsung YP-U5, Service Manual

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4-4 Samsung Electronics
Troubleshooting
4-1-2 If there is no sound
Is the YEPP logo
song played?
Do the earphones
work correctly?
Do the sound
and noise stop?
Complete
Are they
present when playing other
files as well?
Does the
same symptom still occur
when the latest firmware is
upgraded?
Yes
No
Yes
Yes
Yes
Yes
Is the
same symptom still
present after replacing the
earphones?
Does it play after
re-soldering the jack?
Replace the earphones.
No No
Yes
Yes
No
No
No
No
No
Yes
If there is no sound
Is the soldering
on IC3, L1, L2, L3, R9, R100
and R24 normal?
Check it again after
re-soldering faulty elements.
Complete
Replace the board.
(Detailed inspection is required.)