Checkpoints By Error Mode; No Power - Samsung LE27S71B Service Manual

4 Troubleshooting

4-2 Checkpoints by Error Mode

4-2-1 No Power

LAMP off, power indicator
LED red color?
Yes
Does proper DC 12V
appear at CN800?
Yes
Does proper DC A3.3V,
A5V appear at
C854, C866?
Yes
Does proper DC 5V, 3.3V,
1.8V appear at C811, C853,
C833?
Yes
A power is supplied to set?
4-2
No
Check a connection a power cable.
No
Change a Assy PCB Power.
No
Check a IC809, IC802.
Change a main PCB ass'y.
No
Check a IC803, IC805, IC813, IC307.
Change a main PCB ass'y
Check a other function.
No
(No picture part)
Replace a lcd panel.