Spectroniq PLTV-3750 wont start
I have a Spectroniq PLTV-3750, that when i press the power button, the LED will turn green then after 2 seconds will turn red. No back lights come on, no sound can be heard, no image can be seen with flash light. but all voltages are present. I have tested the power supply and it shows all the voltages, i.e. 3.3v, 5.0v, 16v to the mainboard and 24v to the inverter board. I think that is correct! I have tested the backlights individually with a backlight tester I purchased and they test good. I believe the problem is in the mainboard, which I have already purchased 2 used ones. However none of them will function, I can not even get the green light with them as with the original. I believe I must troubleshoot the mainboard down to component level as I can not find the mainboard new. I am posting some pictures taken from pacmanretro's post because they are the same and I am also posting a pdf file with the voltages on the 7 connectors of the mainboard, before and after pressing the power on button. I hope someone can help me with this, I am only a novice and not sure how to proceed. One thing I have noticed is that when I remove the 16v supply connector to the mainboard the green light will stay on, but of course the set will not work.
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