2-6
ONE POINT REPAIR GUIDE
NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR
“HELLO” ON FRONT PANEL
When you turn on your set, it will blank / no message on front panel, and stand-by LED
doesn't work.
2-3. LCD System power 5 V, 6.2 VA (No VCC_5V, No 6.2VA)
2-3-1. Solution
Replace IC301, IC304 on MAIN board.
2-3-2. How to troubleshoot (Countermeasure)
1) Please check CN401 pin7 (VCC_5V), pin10 (6.2VA).
2) If 5 V, 6.2 VA is abnormal, please check IC301 pin3 (VOUT), IC304 pin1 (SW).
3) If 5 V, 6.2 VA is abnormal, replace IC301, IC304.
2-3-3. Service hint (Any picture / Remark)
< MAIN board top view >
IC304
IC301
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