Re: Panasonic 65vt20
Hi,
the problem was the SD board. I've changed both SD and SU cards and now the TV is ok.
Thanks a lot.
Ivan
poldog
Member
Last Activity: 10-19-2015, 01:16 AM
Joined: 11-28-2014
Location: rome
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Re: Panasonic 65vt20
Ok,
I've bought the D board.
I will keep you in touch.
Thanks,
IvanLeave a comment:
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Re: Panasonic 65vt20
ok,
I've followed your suggestion and the defect is the same.
the "A board" is ok.
now I have two opportunities:
1)100€ for a brand new SC board
2)40€ for a used D board...Leave a comment:
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Re: Panasonic 65vt20
Thanks! I will try and I will let you know
Leave a comment:
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Re: Panasonic 65vt20
ok, now also with the fans the defect appears. there is a led on board (D16583) that is power on.
now, i'm thinking about the possibility of a defect of the Tnpa5149 1 D BOARD.
Is it possible?
i'm so confused... help me please
Thanks,
Ivan...Last edited by poldog; 08-03-2015, 02:08 PM.Leave a comment:
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Re: Panasonic 65vt20
Thanks a lot Ltank! tomorrow I will try. This evening I found a way...not so elegant but a way...
I've connected 3 CPU fans in parallel with the original fan of the tv and the SC board now is cold...the defect disappear
Ok is a crazy solution but works!
I will keep in touch with the evolutions.
the helps of this forum are very important.
Thank a lot
IvanLeave a comment:
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Re: Panasonic 65vt20
Hi, maybe is incredible...but with my other Plasma I needed to replace the main board.
I bought an used board and I've mounted it. the board became to do something wrong after one hour....I thought that was impossible that two boards was fault.
I've changed other several boards........at the end the problem was the second main board that was fault too.
Do you think that if I fix the issue with the "active cooling" hack will be fine?
there is some measurement that I can do for understand something?
Really thank you very...Leave a comment:
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Re: Panasonic 65vt20
thanks tw2005. When I have open the tv the first boards that I've tried to freeze was been the A and the D board.
I spent all the day with the multimeter searching for some defect on the SC boards bun nothing strange...
There is a difference between the two boards. in the new board the defect appears after 40 minutes in the old one after 5 minutes.
tonight I've done a try. I'v putted a CPU fan on the heat skins of the SC boards (the old one) and the temperatures was a lot less high. the defect doesn't appears.
Now I'm thinking to do an...Leave a comment:
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Re: Panasonic 65vt20
Hi Moreno, why you suggest this? I think that a problem on this connection generates single bands. the problem concernes the entire panel and when the ysus board is hot.
I will check but I don't understand why the ysus board heats so mutchLeave a comment:
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Panasonic 65vt20
Hi,
I bought a plasma with a defect.
After some minutes, with light and contrast at normal level, flickering horizontal bands appears on the screen.
you can see the defect on this video:
[URL="https://www.youtube.com/watch?v=TysLgZ5eV00&feature=em-upload_owner"]https://www.youtube.com/watch?v=TysLgZ5eV00&feature=em-upload_owner[/URL]
I found that when I spray the ysus board transistors with "ice spray" the defect disappear.
so I changed this board but the changes are minimal, the defect appear the same... -
Re: New Members - please post your introductions here
Hi,
I'm Ivan and I love electronics and mechanics.
I love to buy and fix all...TVs CARs dcc...
I'm an engineer and a technician.
I hope that I will be useful for the community!!!Leave a comment:
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