Samsung YP-U5 Service Manual page 25

Troubleshooting
4-1-6 When it does not screen
Faulty display
Is the USB connected
and the MP3 playing?
Yes
Is soldering on display
elements normal?
Yes
1
While the screen is turned
on, check if the voltage on C73
measures approx. 13V.
No
Are L8 or C73 overheating?
No
Replace the OLED and check it
again.
4-12
No
No
Yes
 Refer to wave pattern
image of Fig. 4-4.
Yes
After a recovery
update, does the MP3 player
function correctly?
No
Re-solder the faulty elements
or replace them and then check
again.
Replace the OLED and check the
voltage again.
Replace the faulty elements and
the OLED, and then check again.
Check again
Yes
Check if there is no power or if the
USB is connected correctly.
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