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Bad picture after turning on while 5-30 minutes. After that it goes well. This "warmup time" is longer and longer.
Here are all of the pics: https://photos.app.goo.gl/gDMsz4suDAaQmz...
Thanks!
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@andrasfodor could be but it's unlikely. Once it has been on for a while, does the picture turn all clear? If so, then this could be either a bad solder joint or failing capacitors etc. WE really would need to see the circuit boards etc. which may show some damage. Also, if you have a thermometer, you could measure the temp on your GPU. Based on the symptoms your describe and the display error, my first suspect here is actually the main board.
BTW nice monitor! :-)
crwdns2934105:0crwdne2934105:0
Thank you for the quick answer.
Yes, after this 5-30 minutes "warmup" time, it turns all clear.
Ok, I'll dissassemble it's back and show the circuit boards.
Do you mean GPU in my computer? I don't think that is faulty, because the error is the same on different sources.
@andrasfodor no, not the one on your computer but the one on the mainboard of your monitor. A monitor that size and with all those options, needs a lot of processing power so that will all be done on the mainboard for the monitor.
Here is a video they are dissassembling a monitor like mine:
https://youtu.be/Rzx2Air5-Vo?si=lWqUbOoh...
The middle case that contains the main board, doesn't it? If I have to take out the case how can I measure the temp of its parts? I have thermal camera BTW.
Thanks!
@andrasfodor You'd have to remove the metal casing around the board to get to it. After that you can most likely plug it is again. Of course you also want to check the other boards. I really like the way they have everything shielded etc. It is a clean modular look. Not the most fun to repair it but definitely clean lines etc.
@andrasfodor Did you even fix the issue? I have the exact same issue.
I called samsung for this the first time it happened they sent out a tech and they replaced a card the tech said that she gets called out to replace these constantly so much so the total repair took her like 20 min 10 of which was figuring out a safe way to lay the behemoth on its face safely. they are aware of the common failure i just wish i could remember what card it was that went bad.
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I have same problem and i will try fix with new t-con board i think this is problem. I'll report the results when I replace it, which will be soon.
crwdns2934271:0crwdnd2934271:0 Mato Lukić crwdne2934271:0
Unfortunately, the T-Con board did not solve my problem. I'll keep looking and write when I find it.
crwdns2934271:0crwdnd2934271:0 Mato Lukić crwdne2934271:0
@matolukic The next best board level replacement to try would be the main board.
@andrasfodor suggested that it might be a COF issue, which would not be a DIY fix.
I've replaced my failing unit with an Acer EI491CR, which is a 1-to-1 match to the LC49HG90.
But, I still have the LC49HG90 in case someone actually finds a fix.
crwdns2934271:0crwdnd2934271:0 Steve Schlosnagle crwdne2934271:0
I'm waiting for the second motherboard to arrive and then I'll try replacing it. If that solves my problem, then I'll start looking for the problem with the board I currently have.
crwdns2934271:0crwdnd2934271:0 Mato Lukić crwdne2934271:0