Troubleshooting - LG 32LF7300 Service Manual

40 : HDMI4 (LF7300 Only)
1. No power
(1) Symptom
1) Doesn't minute discharge at module.
2) None does come into the front LED.
3) Check Off Mode.
(2)
Check follow
Is plug in power cord?
Is connect the Line
Filter and Power
Board Cable?
Is normal the
"Fuse" on Power Board?
Is connect the Power
Board and 24P of Main
Board Cable?
After remove the cable connect to
Power Board (except the AC
connection cable *), authorizes the
AC voltage marking on manual.
When ST-BY 5V does not operate,
replace Power Board.
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Only for training and service purposes

TROUBLESHOOTING

No
Yes
No
Yes
No
Yes
No
Yes
*[AC Connector Ref. No.]
32LF7300 Power B/D : SC100
42LF7300 Power B/D : SC101
32LH3300 Power B/D : SC100
42LH3300 Power B/D : SC102
Plug in power cord
Connect cable.
Replace fuse.
Connect Cable.
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