Samsung T240 running some diagnostic after panel replacement (can't quit)


	FORUM HOME	SEARCH POSTS	WHO'S ONLINE	LOG IN	RULES F.A.Q.

TV Forums: TV Equipment: LCD TV Forum:
Samsung T240 running some diagnostic after panel replacement (can't quit)

Print Thread

aion
New User

Jan 8, 2020, 10:29 AM

Post #1 of 7 (2239 views)
Shortcut

Samsung T240 running some diagnostic after panel replacement (can't quit)	Can't Post

Hello,

I have a T240 where it produced broken picture like green lines on the monitor with HDMI, with VGA it worked for like 5 mins then black screen so I have replaced the main board: Samsung T240 BN41-01109A

This is exactly the same model as was in it (because this monitor have some variations).

So after replacing the board and connecting everything it seems that the monitor runs some sort of diagnostic:

It ignores any cable inputs completely, there is no menu.

What it does is it's cycling through:

-Black screen
-White screen
-Screen with thick RGB lines

then doing it all over again. I can't quit from this I have tried some key combinations but nothing helps. To me it looks like this is some diagnostic mode.

Pls help!

jts1957
Veteran

Jan 8, 2020, 11:53 PM

Post #2 of 7 (2230 views)
Shortcut

Re: [aion] Samsung T240 running some diagnostic after panel replacement (can't quit) [In reply to]	Can't Post

https://elektrotanya.com/...pdf/download.html#dl

-------------------------
Location: Far, Far Away

aion
New User

Jan 10, 2020, 8:57 AM

Post #3 of 7 (2214 views)
Shortcut

Re: [jts1957] Samsung T240 running some diagnostic after panel replacement (can't quit) [In reply to]	Can't Post

Hi,

If I want the manual I google it.
BTW I read it already and has nothing useful in it.

The reason I come to this forum because I hoped that there are experts here who seen this type of issue and can tell me the solution right away before I decide to toss this whole monitor into the trashbin wasting my time.

I already paid for the panel so I reluctant to give up with it that easy but for me it looks like:

-PSU working
-Connection between mobo and LCD works because the RGB signal goes through

So form this looks like that the new mainboard either running some diagnostic, or the firmware is messed up in it somehow or it's broken/bricked.

Thanks?

Pirate

jts1957
Veteran

Jan 10, 2020, 1:11 PM

Post #4 of 7 (2211 views)
Shortcut

Re: [aion] Samsung T240 running some diagnostic after panel replacement (can't quit) [In reply to]	Can't Post

Can you bring up (and also close) service menus as mentioned in the manual?

-------------------------
Location: Far, Far Away

aion
New User

Jan 10, 2020, 4:38 PM

Post #5 of 7 (2207 views)
Shortcut

Re: [jts1957] Samsung T240 running some diagnostic after panel replacement (can't quit) [In reply to]	Can't Post

No menu can be brought up.

Doesn't matter if I plug in any cables vga, hdmi, dvi.

It cycles through some sort of self test what I said:

1, BLACK SCREEN
2, WHITE SCREEN
3, THICK RGB LINES SCREEN

I tried all key combinations it does not responds.

aion
New User

Jan 12, 2020, 6:25 PM

Post #6 of 7 (2186 views)
Shortcut

Re: [aion] Samsung T240 running some diagnostic after panel replacement (can't quit) [In reply to]	Can't Post

Ok FOLKS here is the solution:

the cable between the board and LCD was not properly connected

If the cable is removed it should be white screen only.

I hate these damn connectors!

I hope this will help out others in the future too.

jts1957
Veteran

Jan 16, 2020, 4:51 PM

Post #7 of 7 (2158 views)
Shortcut

Re: [aion] Samsung T240 running some diagnostic after panel replacement (can't quit) [In reply to]	Can't Post

Quote

So after replacing the board and connecting everything it seems that the monitor runs some sort of diagnostic

So it turns out that you did it to yourself.

-------------------------
Location: Far, Far Away

Print Thread

Search for (options)

- Page loaded in: 0.15 s on (CGI/1.1)