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LG 47CS570-UD 47" LCD TV - NO Picture/Sound

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    #1

    LG 47CS570-UD 47" LCD TV - NO Picture/Sound

    Hello all. Hopefully you can shed some light on the issue I am dealing with my spare bedroom TV. I have a LG 47CS570-UD 47" LCD TV. Its build date is in sometime in 2012 and since getting the TV in 2013, it hardly was ever used. Well at the end of 2013 I tried to turn it on and nothing. The red light blinks two times and turns blue like it normally would when powered on. However we get no display or sound from the TV. It acts like it's not even on what so ever besides the blue light.

    We have tried the hard reset method on it and still no luck. Being I am unable to find any information online about what this exact issue is, I was trying to find out if a certain part has failed (which I can order) or there is something else I can do? This TV is just so new for us not to consider trying to somehow get it working again.

    I have already opened the TV up and I didn't see anything that could be damaged. All the capacitors still look perfectly fine. I was thinking maybe it was a power supply issue. But after checking out what I could with a volt meter, power looked fine… I am just not sure if I should try replacing the power supply or look into replacing the mainboard? It seems many online suggest to replace mainboards in LG TV? I just wish I knew what the issue was so if the part I am buying, will actually fix the TV and I am not guessing?
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    #2
    Re: LG 47CS570-UD 47" LCD TV - NO Picture/Sound

    The Toshiba's are known for a bad eeprom. Maybe LG could have some sort of problem too? I would suspect it's in the mainboard if you are getting voltages out of the power board. Check all your fuses on all the boards too.

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      #3
      Re: LG 47CS570-UD 47" LCD TV - NO Picture/Sound

      Originally posted by dcapper View Post
      The Toshiba's are known for a bad eeprom. Maybe LG could have some sort of problem too? I would suspect it's in the mainboard if you are getting voltages out of the power board. Check all your fuses on all the boards too.
      Yeah Fuses looked good but I will double check.

      Can I just buy a replacement Mainboard swap it in and hope for the best?

      It appears the Mainboard part/model number is EAX64290501

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        #4
        Re: LG 47CS570-UD 47" LCD TV - NO Picture/Sound

        I don't know if the boards have to be an exact match like Panasonic. I don't think so. Search it or your model number on shopjimmy. It will give you an exact match. If they don't have one, check tri state module, moduslink tv parts, and payless components. I have had great luck with all three of them. I even have had good luck on ebay.

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          #5
          Re: LG 47CS570-UD 47" LCD TV - NO Picture/Sound

          Originally posted by dcapper View Post
          I don't know if the boards have to be an exact match like Panasonic. I don't think so. Search it or your model number on shopjimmy. It will give you an exact match. If they don't have one, check tri state module, moduslink tv parts, and payless components. I have had great luck with all three of them. I even have had good luck on ebay.
          That's my only concern. But reason why I am trying to find the same matching model #. I have been lucky to see them on ebay for pretty cheap. Guess I will try replacing the main board with a replacement one to see if I get lucky and it fires on... Thanks for the suggestions of the other websites to buy from.

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            #6
            Re: LG 47CS570-UD 47" LCD TV - NO Picture/Sound

            I see there is alot of tv's with that number you posted. Make sure you get the right number from shopjimmy. Also, make sure your panel sticker matches the ones from shopjimmy to get the exact part you need. I see there is two different versions for that tv.

            EBR73114017 and EBT61983003

            But they have the same panel sticker number and the same notes. Got me which one you need. Maybe look at the pics and see which one looks like an exact match.

            Comment

              #7
              Re: LG 47CS570-UD 47" LCD TV - NO Picture/Sound

              Originally posted by dcapper View Post
              I see there is alot of tv's with that number you posted. Make sure you get the right number from shopjimmy. Also, make sure your panel sticker matches the ones from shopjimmy to get the exact part you need. I see there is two different versions for that tv.

              EBR73114017 and EBT61983003

              But they have the same panel sticker number and the same notes. Got me which one you need. Maybe look at the pics and see which one looks like an exact match.
              I pulled the tv apart again to look at the board in detail. There is an orange sticker that says EBT61983003. Then there is a white sticker not far from the orange one that says EBR74404706. I found a EBT61983003 on ebay pretty cheap so I guess I will try that one.

              I just wonder if LG made a newer model of the same board to possibly fix what could be a common issue with the one I currently have?

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                #8
                Re: LG 47CS570-UD 47" LCD TV - NO Picture/Sound

                So I swapped the replacement main board into the TV yesterday and luck would have it fired right up like it was never broken. So seems the common issues on this is the mainboard failing. Hopefully this mainboard lasts longer then the less then 1 year I had with the original.

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