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Posted on Jan 02, 2017
Your inverter circuits and/or power board need servicing.....
Either three fault scenarios are happening:
1. the inverter circuits are not producing AC ripple too the CCFL lamps that illuminate the LCD glass panel.
2. the power supply board is not feeding 24vdc - 12vdc sustain voltage too the inverter circuits. Meaning, no dc high voltage output from the power board.
3. The timing control circuit (LCD Board) has shorted switching devices or on-board memory has failed....which causes data/dc loss at the input which results in the inverters canceling load power (lamps). The sync data between inverter and LCD Board are absent. This will result in a 'NO LIGHT' condition on the LCD display.
Number 3 is a rare case, its usually #1 the inverters need servicing.....
Posted on Nov 10, 2009
If audio is OK, and only the picture is absent, the fault should be with its back-light. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Surf the site with patience. Pull up older posts.
Posted on May 12, 2014
sounds like a backlight failure (fluorescent tube that illuminates the display element)
can be a little tricky to replace as requires significant disassembly
Posted on Jan 28, 2016
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