LG 50PX4R-ZB stuck in standby mode

[tom66]

Re: LG 50PX4R-ZB stuck in standby mode

Main boards generally aren't repairable.

You can swap the main board, which usually works, just make sure you use 50 inch board as the 42 inch one will not work in a 50 inch set and vice versa.

Also, get a returns policy -- many dud boards and I may not be correct that it is a main board fault, but I am around 90% confident it is.

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

Thanks for all your help Tom..... I will try find one as soon as i can. I was looking for one on ebay specific to the model number. It says Power Board ?

I found this :
http://www.ebay.co.uk/itm/6709V00001...item35c8bf1ca8

So can i get any type of board as long it is from a 50" LG Plasma ?

Thanks again for all your help

[tom66]

Re: LG 50PX4R-ZB stuck in standby mode

No, you need to replace the board exactly... The main board is the one with the video inputs on it.

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

No, you need to replace the board exactly... The main board is the one with the video inputs on it.

OK thanks Tom

So i need to replace this board but for a 50" ?

http://www.ebay.co.uk/itm/LG-42-Plas...item3f2284628d

thanks

[tom66]

Re: LG 50PX4R-ZB stuck in standby mode

If that's the one the RL ON and VS ON connect to, then yes.

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

If that's the one the RL ON and VS ON connect to, then yes.

Hi Tom

Yes the RL ON and Vs ON go from the power board to the AV board with the video inputs on.

On this board there is a red led light on ? Does this red light on the av board indicate a fault ?

I have attached some pictures of the board. Do you know anywhere that i can get this board from ? I have tried ebay but there is only one for a 42" TV

Thanks again for all your help Tom !!

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

Sorry to be a pain but i just typed in the part number stated on the board
MF-056A 6870VM0531H (0) 050929 JHI

.....and i found this for sale BUT it syas it is from a 42" TV ?? Do you think when i bought this TV the prevoius owner tried to fix the fault but replaced the board with the wrong one ??

http://flattvparts.co.uk/index.php?m...ducts_id=11562

I just dont want to buy the wrong board..... thanks

[tom66]

Re: LG 50PX4R-ZB stuck in standby mode

That is possible; though the board should still work, you would just have about 1/3rd of the screen blank. In which case, you may need to order via model number 50PX4R-ZB.

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

That is possible; though the board should still work, you would just have about 1/3rd of the screen blank. In which case, you may need to order via model number 50PX4R-ZB.

Hi Tom

OK i will try and find one. If there is anybody out there that has for sale a main av board for a LG 50PX4R-ZB then please get in touch

Thanks again tom for you info and help

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

That is possible; though the board should still work, you would just have about 1/3rd of the screen blank. In which case, you may need to order via model number 50PX4R-ZB.

Hi Tom

I have been really struggling to find the part i need but i just may of found one but it is from an italian ebay ??

Do you think this will be the one . It looks the same and numbers the same the only difference is on the white sticker.
My board says 5D6871VMAF68A003 and the one for sale he says 6871VMAD73A but everything else the same ?? I have asked him if it is for a 50" but he might not understand me !! I might have to get an italian phrase book !!

http://shop.re-life.it/index.php?rou...roduct_id=1328

I hope this is the one ??
Thanks

I think i have answered my own question ... the 42" main board doesnt have a connection on the top left and only 1 smd capacitor the 50" one has 4 SMD capacitors and the connection !!!!

I will try and get it delivered ??

please let this be the one ??

Thanks

[tom66]

Re: LG 50PX4R-ZB stuck in standby mode

Problem is, the 42" and 50" use same boards; the only difference is software on the boards.

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

Problem is, the 42" and 50" use same boards; the only difference is software on the boards.

42" board no connector on top left and only 1 smd capacitor
http://flattvparts.co.uk/index.php?m...ducts_id=11562

50" board with connector and 4 smd capacitors
http://flattvparts.co.uk/index.php?m...ducts_id=11021

the one on my tv is the bottom one and this picture is defo the 50" one ... its gotta be hasnt it ??
http://shop.re-life.it/index.php?rou...roduct_id=1328

Thanks Tom

[tom66]

Re: LG 50PX4R-ZB stuck in standby mode

There may be differences between those boards due to production changes, which has nothing at all to do with 50"/42".

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

There may be differences between those boards due to production changes, which has nothing at all to do with 50"/42".

mmmm ok !! So there are also boards with 4 smd capaacitors and the connector for the 42" also ??

mm i didnt realise how difficult it would be in getting parts ??

Do you think i should get this board ??

thanks

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

There may be differences between those boards due to production changes, which has nothing at all to do with 50"/42".

It looks like it is back to the drawing board !!!

The shop in Italy selling the part i thought i needed has replied back and told me it is for a 42"

It looks like the 50" main board i need is going to be hard to find !!

thanks again Tom for all your help ... wish me luck !!

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

There may be differences between those boards due to production changes, which has nothing at all to do with 50"/42".

Hi Tom

I am still stuck with the LG TV !!!!

I have still not been able to find the part

However Do you think it is possible to use the AV board from a LG50PX4D

They are the same except the Audio Outs are on different sides ??

I thought i could also use the back cover of the LG50PX4D so then the holes would match up on the back ??

What do you think ?

thanks ste

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

Problem is, the 42" and 50" use same boards; the only difference is software on the boards.

Hi Tom

i have another question ???

When you say the only difference between 42" and 50" is the software ..... is it easy to install the 50" software to the board ?? If so how is this done .... I am presuming it is from the RS232 port on the board ??

thanks again ste

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

I have only just got the part !!! It was a nightmare to get hold of this part, I eventually got one shipped from Holland !

Anyway I swapped the board over and the problem is exactly the same !!!

Can anyone please help ????

[tom66]

Re: LG 50PX4R-ZB stuck in standby mode

Make measurements of the power supply connector, and do not rule out the chance that the board you received was defective...

[surferbum]

Re: LG 50PX4R-ZB stuck in standby mode

Voltage measurements on the power supply or main board ??
thanks