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General discussion

Syncmaster T220 changing source analogic/digital at any time

Jan 5, 2009 6:56PM PST

Hi all,
I have a 22' T220 Syncmaster from Samsung since less than 2 months (config: XP pro, GeForce 7600 GT, with all lastest drivers installed, DVI plugged)
It worked like a charm until it started to jump from one source to another (analogic/digital) without stabilizing, especially when:
- I started to play a video on full-screen (especially when movies are very dark)
- I started to play to a game
- Windows starts (the moment when Windows is in DOS mode)

Plus, when I want to wake up my PC from sleeping, it does not want to come back to the desktop...
I have the same results when I plug everything in VGA...

Nothing helped when playing with the OSD (manual.ato source detection), reset of stuff like that.

Where does this come from ?

Please help me !
Thanks in advance for your help

Discussion is locked

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Losing signal
Jan 14, 2009 5:19AM PST

Your symptoms indicate that your monitor is losing the signal intermittently. I initially thought a driver, but after speaking with one of our specialists, he's thinking that either the DVI cable is not making a solid connection or that the video card settings need to be re-tuned; possibly towards a resolution supported in the manual.

Keep me posted.

--HDTech

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loosing signal
Jan 14, 2009 5:34AM PST

Thanks for your replay,

I never changed my video card settings; Initially it worked fine. Resolution was the native one: 1680*1050 and everything was ok.
But one day, it started to loose signal (DVI cable was the one given with the monitor and the same pb was obtained with the analogic cable, so it does not come from the cable.)
Now, it became worst; sometime, the monitor does not want to display anything at all... i keep on playing with the source button but nothing comes after several minuts.
Any idea?
Thanks for your replay

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Difficult to diagnose...
Jan 14, 2009 2:12PM PST

I'm not sure how to best diagnose this.

If it's not the cable - and we're sure of this(?) with both DVI and VGA, then it may very well possibly be the monitor. Does the monitor work when hooked up to other computers?

--HDTech

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well..
Jan 14, 2009 3:41PM PST

Hi, Thanks for your reply,

Well, someone at Samsung france told me it can be the card inside the monitor which is losing its mind...
The reason why i'm pretty sure it' a monitor issue is:
- at some point, i disconnected the DVI cable and the monitor still does not want to display something ! even the digital/analogic label (top right) and even does not want to start
- my video card is new (bought it the same day of my monitor) and it worked (new video card+T220 monitor) like a charm at the beginning.

I found several identical pb on the internet of mad T220... never heard about that ?

Thanks

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Not here...
Jan 14, 2009 4:55PM PST

Unfortunately, I haven't heard about it here.

Not to say that problems don't exist, I just haven't heard much on that specific model. Before taking it apart (or is it too late?), you might want to see if another computer experiences the same issue. Just a thought.

--HDTech

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the final answer
Jan 14, 2009 7:05PM PST

Ok, a monitor substitution was planned this morning and... guess what, the monitor provided by the after sales service from Samsung france works like a charm...
So:
- video card was ok
- DVi/VGA cable were ok
- problem came from the samsung monitor

Question is now: will it work for more than 2 month until a new pb appears ???

Thanks anyway for you help

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Samsung t220p.
Jan 25, 2009 10:03PM PST

Hi

My friend and I have been having the EXACT same problem.
We both received two t220p's from our company, and have been working with them via DVI for the last month.
As if they were synchronized, both monitors started losing signal, in the exact fashion described here.
Being a PC technician in a former life ( a few years back ) I have quite a few DVI cables and extra video adapters.
I swapped both and tried again and again, and it only happens with the t220p at native resolution of 1920x1200.

I am currently trying to RMA my monitor, which I doubt I will be able to due to the fact I got it as a "letting go" present (Israely branch of Netapp closing down gave it away ).
Any tips as to what i can do?
Noam.

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SOURCE BUTTON SOFT-JAMMED
Mar 2, 2009 3:50AM PST

Hi
I have a problem similiar to the ones posted earlier, but I found the cause of mine.
If majority of the screen is black, the t220 changes source, but not only does it change source, if I bring up screens menu and view a solid black fullscreen picture a menu item gets activated, just like if I pushed the source button.
The issue still persists if I change the auto-source to manual.
Please advise, many thanks

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fix
Mar 2, 2009 5:10AM PST

In my case ( and I assume others as well ) the main lcd board was fried.
They took it, replaced the board, and hey presto, it works.