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LG 42lf66 - parts compatibility    
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cybergzu



Joined: 21 Jan 2016
Posts: 5

PostPosted: Thu Jan 21, 2016 7:23 am    Post subject: LG 42lf66 - parts compatibility Reply with quote

Hi everybody!

I just get my hands on a dumped 42 lg tv, model 42lf66-ZE-AENYLJG
Of course it wasnīt working so i opened it up and saw the power board
was missing. I saw an affordable one on ebay and bought it, the model
was EAY38640201. After that I powered up the tv, and i saw the
following thing: impossible to get signal, no from the tdt or hdmi or
auxilliary source. I tried with several devices (dvd reader,
playstation...) nothing to do i only could access the tv menu (that
worked fine).

To get things worse i accidently droped the mainboard and broke it... But fact is i can get a very cheap replacement for that one ( much
cheaper than buying a 42 lcd of course), but i have still some doubts

Are the previous problems (signal failure) coming from the mainboard
or the replaced powerboard?

Second, i bought the power board just based on the EAY number and now
i see some parts have various numbers, EAY, EAX and EBR. So I'm a bit lost for the compatibilities issues. So, is the powerboard i bought
really compatible with the previous motherboard( Model EAX35231404(0)
84EBR37373926008). And if i decide to get a new motherboard, should i
get the exact EAX AND EBR number as the old one or just the EAX number
is enought?

Thanks a lot!
Google

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JTS1957



Joined: 21 Jan 2009
Posts: 2286
Location: Far, Far Away

PostPosted: Thu Jan 21, 2016 9:54 am    Post subject: Reply with quote

http://www.shopjimmy.com/lg/42lf66-ze

Even on the 'Out of Stock' items they still show the various other numbers that appear on boards, model equivalency and hi-def enlargements, tho on something this old...
cybergzu



Joined: 21 Jan 2016
Posts: 5

PostPosted: Thu Jan 21, 2016 11:38 am    Post subject: Reply with quote

I don't have access to thsi site, donīt know why, what i need is to know the mainboard i'm buying will fit in my tv. There are various models for the same board and for the same model, so here's my problem... Sad
JTS1957



Joined: 21 Jan 2009
Posts: 2286
Location: Far, Far Away

PostPosted: Thu Jan 21, 2016 1:02 pm    Post subject: Reply with quote

Your model number power supply (among quite a few others) http://imgur.com/xgLdQ5S

No Main (motherboard) board was being shown for your model, but when your main board number was searched there were 5 hits, but none listed your model number.

btw - EBR is how 'part' number starts.
cybergzu



Joined: 21 Jan 2016
Posts: 5

PostPosted: Thu Jan 21, 2016 1:28 pm    Post subject: Reply with quote

Thanks, but that the trick, this is not my power board i have the other model, the squared one. There are a lot of reference for this tv, and it is easy to get lost. I just hope the power board I bought i exactly the same that was before ( I couldn't check the entire reference, just the eay part of it), and that it is compatible with the mainboard (that i have to change too, i know it is a little bit difficult to explain, sorry Very Happy )
Google

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cybergzu



Joined: 21 Jan 2016
Posts: 5

PostPosted: Fri Jan 22, 2016 11:49 am    Post subject: Reply with quote

Ok, now i see it clearer.
My powerboard is a 39792801 and my motherboard is EBR37373926 (as you said JTS1957 Very Happy
These numbers can be found on stickers on the board.

Does anybody knows is theses parts match together? Connectors fit perfectly but I still have some doubts.
JTS1957



Joined: 21 Jan 2009
Posts: 2286
Location: Far, Far Away

PostPosted: Fri Jan 22, 2016 5:28 pm    Post subject: Reply with quote

This should help muddy the waters: http://www.electronica-pt.com/esquema/func-startdown/3092/
cybergzu



Joined: 21 Jan 2016
Posts: 5

PostPosted: Fri Jan 22, 2016 7:11 pm    Post subject: Reply with quote

As you said... Looks like iīve got another version of the 42lf66. Nor the power plate and the mainboard are the one depicted in the manual. And no way to find another one!!
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