TV was working great and then we decided to move it into our living room, we unplugged it and put it into the new entertainment center and then plugged it back in and not even the power light will come on. it had not been used for at least 24 hours so it didn't over heat or anything...we checked the outlet and everything else we plug in works fine accept the tv. no power is getting to the board at all. so we did some research and found it may be a blown fuse but it has no fuse apparently...also the capacitors look fine no leaks or bulging. we have tried multiple outlets and even a new cord and the problem still exists.
Hi Michael
Your certainly doing all the right things. I wish more people on this site would give a great description like yours.
OK, so Process of Elimination.
An AC Multimeter would prove useful here.
Assuming your fairly technical and are aware of electric shocks.
Use the meter on AC scale to check for 110 or 240v AC inside your TV power supply section.
Does it get to the board? Does it get to the Switch Mode Power Supply?
Switch Mode power Supplies can be powered up by a normal AC type switch (ac wires to physical switch) or a Logic type switch. (Like on a computer Keyboard) This triggers the Switch Mode to turn on. Usually you get a high frequency zip sound.
Is the switch mode supply open on the PCB or is it in a Metal Enclosure? (perhaps has a separate fuse inside) the Electrolytic capacitors inside here are in a harsh environment so this is where they leak or bulge.
If the Switch Mode Supply doesn't come to life then you have the problem.
The other side of the Switch Mode Supply is lower DC voltages. Perhaps 12v or 5v. Use the multimeter to check.
A logic type switch usually stores a voltage in a capacitor on the secondary low voltage side of the Power Sup. When the logic switch discharges the cap it fires up the SM Power Supply. This is how computers boot up. So look for bad cams on low voltage side.
See where wires come in from switch to Power Supply.
Good Luck
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http://www.pdfone.com/download/5_keyword-hisense/pdp-tv-service-manual-hisense-confidential.pdf
Please find above is a link for a service manual use this to troubleshoot and hopefully repair.
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