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you have a power supply partial failure if you know how to safely check your power supply check the voltages, swolen capacitors etc. leaking capicators are usually the problem. if you know nothing about power supplies do not look at the tv without the tv unplugged! better yet; have the supply repaired by a professional. a power supply can kill you!
Sir the problem of your unit is the power supply, if you remove the back cover of your unit try to observe the power supply if there is a bulge up or leaky capacitor. This bad capacitor is producing unfiltered and low dc supply to your unit that cause your unit to malfunction, if you see this bad capacitor replace it but observe the polarity. Note be sure to unplug the unit when removing the back cover. Good day sir and best regards.
The tv have a short in many parts internally in tv power supply board itself could be anythings on the tv power supply board to causes the fuse to blow over and over again.U will never solved it if u don't have all the measuring elecronics equipments and skills and know how to find out.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
One of the most common problem with current TV's is heat. Since they tend to get hot, one of the things that goes out a ton is the fuse or power supply. Depending on the TV and the Manufacturer this can be an easy fix, sometimes you don't even have to solder if it's the power board. I bet if your TV does nothing that's the case. Check around online by your make/model and you'll get a pretty good idea of how easy it is to fix.
I found a Parts purchase list online, but you'd have to know the part number for the ones that are broken.
Next,check the input voltage of the power supply using multimeter tester (range in AC).If the power supply don't have input voltage,replace the power cord.
If the power supply board have input voltage,next is check the output voltage of power supply it should have 5vdc for the system board,12vdc for the sounds and 24vdc for the back light inverter.
If you don't have output voltage of the power supply.Please check the fuse if busted and the power transistor if it is shorted,replace it with the same type,ratings and value.Also look for any leak/bulged on the top capacitor.
After you done this steps and you found and replace the defective parts.Plug-in your TV and power it ON to test if it is OK.
The power supply looks like this:
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hello, Ensure that the TV plug connected firmly to the mains power supply, if nothing happens, It is require of you to open the cover of the TV to check for blown fuses, if found, do replace with a new one of the same current rating. if otherwise your power supply board is dead, u know basic electronics’ and soldering? Most of the times, the power suppply board just have dead leakages gases capacitors.These capacitors alway bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get ur tv power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole rerfurbish power supply board for the replacement.
I would suggest to start by measuring the voltages from the power supply to the main/back light circuitry. If the voltages are low or jumping up and down, that means a defective power supply.
If the red light is blinking, the power supply has a shorted component.
Let me know if you need further assistance.