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No power at startup on Sharp LCD-32gd8e

I have the same problem with a just of of warranty unit and have noticed that if I hold down the on/off button at the top of the unit, the picture will appear and everything works fine, until I let go of the button and then the unit switches off.

Does everyone else with this problem, find that holding the button down does allow the unit to work. If so this shows that the power supply is OK and the unit functions... if you keep the button held down

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Hard to diagnose some problems without hands-on. However, my guess is the power supply is fine, as are most on LCD's. The inverter board which powers the screen is the most likely cause of problems on that model set. Only other thing that i've seen is a shield that moved slightly beneath the main pcb. It moves because the putty that holds it in place was not rated at a high enough temp. and it simply turns to goo, allowing the heat sink to slide down and touch the main board. Three boards must be removed to find this problem. By holding down the power button on the set you may not be allowing the shutdown circuit to engage which means the problem could still be anywhere in the set. Sorry I can't be more help. All you can get is a guess here.

Posted on Sep 02, 2008

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