3-9
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.
2-5. IC502 (SDRAM)
2-5-1. Solution
Replace IC502 on MAIN board.
2-5-2. How to troubleshoot (Countermeasure)
1) Please check physical status of IC502 on your eyes.
2) Check the VCC (3.3 VA) and of IC502.
If 3.3 VA is abnormal, please check IC303.
3) Check pin17, 18, 19, 38, 2, 29 of IC502.
If the signal doesn’t come out, check damping resistor.
4) If resistor is OK, replace IC502.
2-5-3. Service hint (Any picture/ Remark)
< MAIN board bottom view >
IC502
(SDRAM)
To Next Page
Loading...
