3-11
ONE POINT REPAIR GUIDE
NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE ON VFD
When you turn on your set, it will blank / no message on VFD, and it will not boot-up.
2-7. IC501 (MCS IC)
2-7-1. Solution
Check IC501 on MAIN board.
2-7-2. How to troubleshoot (Countermeasure)
1) Please check 1.2 VA , 3.3 VA, VCC_3V3 of IC501.
2)
If it doesn’t work even though IC302, IC303, IC304 are no problem, IC501 MLC3730S could have problem.
Replace IC501.
2-7-3. Service hint (Any picture/ Remark)
< MAIN board top view >
IC501
(MLC3730S)
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