Hello all ~
I picked up this nice Sharp Aquos 80" television the other day but when I plugged it in nothing happened. And I mean nothing. No picture, no sound, no logo, no LED lights on the front panel. Nothing.
So, I opened it up and the only thing I could detect using my multimeter was the fact that it was receiving and passing along the 120 AC volts from the plug and I was also able to determine that the glass fuse that's near the plug-in appeared good and it was registering 45.4 AC volts. Not sure if that number indicates that the fuse is good or not.
Beyond that, no voltages were detectable on the 3 connectors that come off the power supply board or (then, as expected) no voltages were present on either of the other two boards (main and logic).
I took some pics of it all which I will post shortly. Hoping someone has run into this "absence of voltages" problem before and can provide some starting point insight.
Note: I believe this particular power supply generates the typical voltages a PSU would and also controls the LED inverter operation(s).
~ kca
I picked up this nice Sharp Aquos 80" television the other day but when I plugged it in nothing happened. And I mean nothing. No picture, no sound, no logo, no LED lights on the front panel. Nothing.
So, I opened it up and the only thing I could detect using my multimeter was the fact that it was receiving and passing along the 120 AC volts from the plug and I was also able to determine that the glass fuse that's near the plug-in appeared good and it was registering 45.4 AC volts. Not sure if that number indicates that the fuse is good or not.
Beyond that, no voltages were detectable on the 3 connectors that come off the power supply board or (then, as expected) no voltages were present on either of the other two boards (main and logic).
I took some pics of it all which I will post shortly. Hoping someone has run into this "absence of voltages" problem before and can provide some starting point insight.
Note: I believe this particular power supply generates the typical voltages a PSU would and also controls the LED inverter operation(s).
~ kca
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