NO
NO
NO
Is IC4140 (TOP268VG) damaged?
Is D4142, D4143, D4144, D4145 or
IC4140 damaged?
Repair the short circuited area on the
PCB.
Check the damaged parts.
Replace the damaged part.
Replace the damaged part.
Is the fuse (F4140) functioning proper-
ly?
Are there any short circuits caused by
the soldering on the PCB?
Are any parts damaged?
Replace the IC4140 (TOP268VG) and
D4142 / D4143 /D4144 / D4145.
DC 5V is not output.
YES
YES
YES
YES
YES
YES
6. SMPS
95