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5. Troubleshooting
NO Power Detected
(Stand by LED OFF)
Operation of PQIZ1 is
Check feed back PQIZ1[PIN 3]
Samsung Electronics
No
PAFT1 is normal?
Yes
PVDL1/2~PSDZ1/2
No
PFZZ1/2~ PVZL1/2
SHORT and OPEN
Are normal?
Yes
Is there voitage at
No
PQIZ1[Pin 5]?
(Over 10V)
Yes
No
Normal?
Yes
Is 5.8V
Change fuse
Change short circuited or
opened parts
Change PQIZ1 IC.
Replace PQIZ1
5-1
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