Model of tv is hisense 50k220pw.I dont have remote of tv.tested from key power switch button on controle panel which tests ok.
You did not give a model number. I have repaired one of these sometime back. Look into the power supply. Find a single capacitor (fairly large) with a value of about 47mf at 160 / 200 volt (may be a yellow cap). It may have a small bulge. Replace this if you can. Remember I have no model number to exactly pin point. But, this is a very good tip. Thanks for asking, Matt of Martins TV Repair.
thx the make and model is hisense 50k220pw.
WITH NO LED STANDBY LIGHT...I WOULD BELIEVE IT IS THE POWER SUPPLY. IF YOU CAN DO IT SAFELY, TRY THIS. SOME FUSES WILL NOT LOOK LIKE A CONVENTIONAL FUSE. ON THE BOARD A FUSE WILL HAVE A LETTER F FOLLOWED BY A NUMBER,CHECK THESE. LVDS CABLES ARE THE RIBBON TAPE CONNECTIONS. THESE MAY BE REMOVED, SPRAY A CHAMOIS STICK AND CLEAN THE RIBBON END. CLEAN THE ACTUAL CONNECTION ON BOARD. yOU MAY HAVE TO LIFT A SMALL CLIP UP TO EXIT RIBBON CONNECTIONS....BE CAREFUL HERE, THEY CAN BREAK. REPLACE AND POWER UP AND SEE IF A STANDBY LIGHT COMES ON. WITH A VOLT METER SET A 200 VOLTS +. PLUG IN TV AND MEASURE THE HIGH VOLTAGE CAPACITORS. THESE CAPS WILL BE 160 VOLTS OR MORE....TEST THESE. TELL ME WHAT YOU FIND.
Thanks appreciate your input.I am getting the high.voltage on the imput high voltage caps of the pwer suply pcboard.on the output of the psuply pins I get a very low voltage 8.5volt or 9volts.The main pcboard dont hve 5volts.How do I isolate the pwersuply totaly away from main pcboard .To chek correct votages on pwer suply pcboard?to ensure pwersuply pcboard is 100 %?What voltages should I get?Hope my question is clearly understood.Apreciate your imnput, thanks again.Kind Regards
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SOURCE: Visio p42hd, no picture
Yes it does sound like the mainboard. But we have to confirm. I will see if there is a service manual for this unit in my collection but do you think you can safely work on it? Have you worked on electronics before? The last thing I want is you hurting yourself trying to fix it. HV circuits are not to be messed with unless you know about them.
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