LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

Can we have a good clear picture of the back of your MAIN.

Bout as good as it's gonna get. I remembered my wife has a nice 8mp Digital Camera.. My daughter is going to bring it into the shop later..

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

Can we have a good clear picture of the back of your MAIN.

CLEAR??

Lemme try....

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

Yea, I searched too. I can find OWNER'S MANUALS up the ying yang.. Service Manuals, not so much..

Don't get me wrong. $5 is a small price to pay to get the manual for this puppy. I just can't do it til the morrow...

[selldoor]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

Can we have a good clear picture of the back of your MAIN.

[selldoor]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

'ollox I was looking at this
https://www.shopjimmy.com/lg-ebt60947202-main-board.htm
Think its the same board main number it is for a 50PK540 but for the AUSLLHR
and yours is an AUSALHR so maybe different. Its a minefield but what is odd in my earlier post I noticed the AL/ LL has a different parts list but both have IC701

[vinceroger69]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

Looks like it.. But it's behind a paywall.. I can get it tomorrow..

Sorry i didnt click the download link i will see if i can find a free one.

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

As retiredcaps schematic link is for a slightly diffrent model number to yours maybe the ic is a diffrent number is this link for your set?
http://servicemanuals.pro/serviceman...a/details.html

Looks like it.. But it's behind a paywall.. I can get it tomorrow..

[vinceroger69]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

As retiredcaps schematic link is for a slightly diffrent model number to yours maybe the ic is a diffrent number is this link for your set?
http://servicemanuals.pro/serviceman...a/details.html

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

Top left hand corner back of the main board ?

Nope.... I can't get a decent pic, but there are no ICs there at all..

There is an IC501 that's a possibility..

[selldoor]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

Top left hand corner back of the main board ?

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

I can't find IC701...

The closest I see is IC703

[selldoor]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

This site https://www.buyphilipsparts.com/mode...40?language=FR
lists all the parts ic701 page6
from that lg part no is EAN60223701
This site
https://www.buyphilipsparts.com/item...,analog_Switch suggests it is not in the 750

This site
http://www.electronicmarket.com.au/i...0-p-81393.html

suggests EAN60223701 is one of these
IC,Analog Switch (IC900)
[EAN60223701]

MIC2019YM6 2.5 to 5.5V 1MSEC 700USEC 0W SOT23-6 R/TP 6P 1 MICREL SEMICONDUCTOR INC.

which is one of these
http://www.digikey.com/product-detai...5-1-ND/1821755

Datasheet here


Of course it may be all a trick.

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

I have been looking at pictures of the board but cant see it -At first I thought it was the main processor but that is IC1 Maybe it is on the back If its the one I think it may be a small 6 leg job smd so may be not to bad to replace and not too expensive (if its the one I think) I will go and see if I can fix anything simple round the house till you get to have look.

By process of elimination, I think IC701 is the one marked in yellow. But, according to the manual I got from RetCap, that may be the audio processor.. The only other similar IC is marked IC402...

Which MIGHT be the culprit, as the Part # designations are from the afore mentioned manual which is for the 50PK750... So, the designations might be different.

I'll know more once I get to the shop and get my hands on the board..

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

I have been looking at pictures of the board but cant see it -At first I thought it was the main processor but that is IC1 Maybe it is on the back If its the one I think it may be a small 6 leg job smd so may be not to bad to replace and not too expensive (if its the one I think) I will go and see if I can fix anything simple round the house till you get to have look.

If I am lucky, I have a replacement board at the shop.. I have a ton of boards my daughter and her friend recently helped me organize, so I might be able to lay my hands on it quickly..

The boards pictured are just the SMPS boards and buffer boards. I have even more Main/Video boards to the left of that picture..

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

Thanks retired caps I MAY have got there in the end.

Don't sweat it.. While the direct route makes for a quick and easy fix, the long way around makes for PLENTY more learning..

And, as is obvious, I have a lot to learn..

Thanx.

[selldoor]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

I have been looking at pictures of the board but cant see it -At first I thought it was the main processor but that is IC1 Maybe it is on the back If its the one I think it may be a small 6 leg job smd so may be not to bad to replace and not too expensive (if its the one I think) I will go and see if I can fix anything simple round the house till you get to have look.

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

Normally I transport things back and forth so I can work on stuff at home as well as the shop..

But a 50" Plasma is sort of a pain to lug around.

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

I'll have to wait to get to the shop... But it's an IC so it's likely I will be unable to replace it.. So it looks like it's going to be a board replacement..

But at least I'll be replacing the correct board!!

[selldoor]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

I meant to write

"Pop quiz, hotshot." What does that tell you?

From the movie Speed starring Keanu Reeves.

Bomb on board?
Dont travel by bus?

Thanks retired caps I MAY have got there in the end.

Michale - what is the part number of IC701 ?

[Michale32086]

Re: LG Plasma 50PK540 Lightning Victim LED Light Relay Clicks On Plug In Nothing Else

Ahhhhh I think dawn has broken!!!

The problem isn't the SMPS Power Board..

The problem is in the Main Board!!!!

Well, I'll be deeped in sheet!!!