27221Views21Replies

Author Options:

Re-using Smart TV board from dead TV to make another TV smarter... Answered

Hi,

I have just bought LG 47GA6400 TV but I damaged LCD screen (CRD31092201) when I was assembling it. 
I couldn't find low cost LCD to replace and I started wondering how I can reuse any remaining parts of this TV.
Actually there are many people like me wondering what to do with dead Smart TV.

Few years ago you would receive a standard advice – throw it away.
But today Smart TV parts are powerful and with your help might be re-used again...

Here is an example:
My LG TV has mainboard with dual core CPU,  Google TV inside and cool remote controller with QWERTY keyboard and tons of applications....
I wish I could reuse it with other, not so smart LCD TV I have. 
The only problem, how to connect Smart TV mainboard to a HDMI. 
It doesn't have HDMI out, it has only input ports and one LCD interface cable....

Is it a crazy idea to convert LCD interface back to HDMI or VGA ?

Can you create an instructables to show how to do that ?

Tags:SmartTV

Discussions

The forums are retiring in 2021 and are now closed for new topics and comments.
2
HicSvntDracones
HicSvntDracones

1 year ago

This "can" be done. I have actually replaced boards between LED Tv's in the past. You need the resolutions to be the same, along with the LED flex connector. A lot of TV's use the same connectors, but you need to do the research first to be sure. Essentially, instead of putting a pcb into another tv, think of it as replacing the broken LCD with one from another tv, as long as the connectors fit, it usually works.

0
Sweden14
Sweden14

Reply 1 year ago

Thanks for sharing this but you mean that its only about replacing bords among the same resolution and no matter what the screen size ?
I have three smart tvs with various screen sizes 42" 55" 70"
All are LED . All are dead due to fail in the main border nothing else.
I found a broken screen Samsung TV smart online for sale for very cheap.. I am sure that the internal bord is ok..
then can I do the change on any of the three TVs that I have ? Appreciate.

0
soulife883
soulife883

Reply 11 days ago

Chances are you can resurrect at least 1 of them but maybe all. If you know which board it bad you can search online for just that board and replace it. Some sites even sell entire "kits" which replace all the boards and they're relatively cheap.

As for what the OP is asking, adding an HDMI out to the TV, I'd imaging it can be done with something like this
https://www.amazon.com/ILS-Adapter-Support-Resolution-Raspberry/dp/B07ZNZZX4K

0
Sweden14
Sweden14

Reply 1 year ago

Main bord I mean. They are all LG brand

0
cuziam3g
cuziam3g

5 months ago

Hi, I have the motherboard and power supply of a 42" samsung uhd tv. Is possible if i could connect this to an old lcd tv?

0
cuziam3g
cuziam3g

Reply 5 months ago

Anyone???

0
ChadB125
ChadB125

8 months ago

Is it possible to make my non smart tv into smart tv by changing something in the back ?

0
saibala7251
saibala7251

9 months ago

I have old lcd 19 inch monitor and 32 inch led tv with broken screen can connect led tv bord to that hp lcd pannel

0
Pascal P Lapann
Pascal P Lapann

10 months ago

I hhave 5 TVs can I use parts from one to fix the other

3
RodrigoS3
RodrigoS3

11 months ago

I made it... A couple years ago my father dropped down a Samsung tv set accidentally. I already had an old dead Sony LCD TV, but no smart. So, I made a little investigation online; ---how to change the lcd panel from a tv to another, without worrying the brand---. After few months, I learned that the flat interface cable (or in other cases,several tiny cables twisted in pairs) that comes from the motherboard to the lcd panel. That cable has some electrical signals called LVDS, it stands for Low Voltage Differential Signal, and comes in pairs, and the number of those pairs depends on the resolution of the television. In my case it has 5 pairs of LVDS signals (for HD and Full HD resolution I guess) plus the Vcc (voltage from the power supply) and the GND (ground). Notice that both, the motherboard and the lcd panel must have the same number of pairs.
It worked!!!!!!!!!! but with 2 anomalies... first; the image was over-pixelated and, second; upside down, but using the service code and the remote control (look for them online because there are so many) I changed those parameters called VESA/JEIDA and MIRROR. Finally the TV was repaired.
Now it´s funny because when I turn on the Sony television (Smart tv from now), it starts showing the Samsung logo and all its menu, but that is not really important... ;)

0
pakichoot0
pakichoot0

1 year ago

I found something but didn’t tried it yet its LDVS to HDMI board by geekworm will convert lcd cables to hdmi hope it helps

0
ErickU2
ErickU2

4 years ago

sorry I have read all this but I need to hear the right answer.

situation:

2 LG TV

#1 is Smart Tv

#2 is not smart tv

Question:

can I switch main board from #1 into #2 so #2 is Smart tv?

Thank you

0
ErickU2
ErickU2

Reply 4 years ago

I did it I replace a main and T-COM board from a smart tv 50' into a regular 47" and now its a 47 smart tv I just use a universal control app from my phone to control the tv I did need to make a cut on the cover to get the conector plug availables

2
alexgontcharov
alexgontcharov

6 years ago

The idea was to connect Smart TV board to HDMI of another TV.
The only problem how to add HDMI out interface to Smart TV board.
Is it possible to convert LCD interface into VGA or HDMI out?

1
mpilchfamily
mpilchfamily

Reply 6 years ago

Possible? Yes

Possible as a novice? No

As i said the LCD interface isn't standardized. You would need to know the fuction of each wire in the interface, so you can feed it into some additional processing so it can be converted to the format of your choice. Essentially requiring another small computer.

In the end it would be easier and cheaper to spend $100 on a Roku box.

1
mpilchfamily
mpilchfamily

6 years ago

Not going to work. You would need to use the board to drive the LCD of the other TV. The drivers on the board probably won't be compatible with the other screen so your out of luck. More and more manufactures are going out of their way to make things proprietary so you are not able to reuse parts of fix it on your own. If you want a reusable smart TV then get a Roku or similar box that can attach to any TV.