2-4
ONE POINT REPAIR GUIDE
2. 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.
2-1. IC305 System 3.7 VA (No 3.7 VA)
2-1-1. Solution
Replace IC305 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Please check 25 VA of IC305 pin7 (VIN).
2) If 25 VA is abnormal, please check SMPS board.
3) If 25 VA is OK, but 3.7 VA is abnormal at the IC305 pin1 (VOUT) & L310, replace IC305.
2-1-3. Service hint (Any picture / Remark)
< MAIN board top view >
IC305
L310
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