ViewSonic VE710S Service Manual - Page 20
No Display - inverter
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UPC - 766907153941
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Page 20 highlights
6.2. NO DISPLAY No Display Check Power region Dark Amber Check LED Color Check IO cable is Yes connect OK ? Green Amber & Green Check X102 Crystal 12MHz is working? Check I/P signal is in pwr saving state? No Check I106 is OK ? Refer to NO POWER trouble shoot flow Chart Press Power key ON/OFF is OK ? No (See LED is green or dark.) Yes Check uP I106 Yes Reset is Ok ? Change I106 Yes Press "1" key if OSD No menu is on display ? Yes No Check Reset circuit C173,D125 Check Keypad pcb is OK ? Yes Check if No Inverter is Ok ? Change Inverter Check I105 MST8016A if HWRST Pin#32 have reset pulse ? Yes No Check uP I106 pin#17 send reset pulse ? Yes Check X101 Crystal No 14.318MHz is working ? Yes Change X101 Check I105 No Pin#70,71 data bus have signal Change I105 LCD controller IC Yes Check panel Powers VLCD_3V3 VLCD_12V correct Yes Change LCD panel ViewSonic Corporation Confidential - Do Not Copy VE710s/b-2 17 VA721
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