Question about SAMTRON 55V 15" CRT Monitor

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I have a Samsung CRT monitor, every time when I switch it on it constantly changes the colors for atleast 20 min... after that it just works fine. is there any options to service or changing the monitor is a good idea? thoughts please.

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Sounds like the monitor have a "cold joint" or having issues with overheating parts. I believe your monitor was used for long periods of time with no power saving active.

If you are a technician and are planning to fix it, you need to solder all cold joints. Also maybe the filaments inside the CRT are reaching the end of it's life.

Instructions how to open the samsung display: http://josepino.com/?open-samsung-back-cover

Posted on Aug 29, 2009

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Posted on Jan 02, 2017

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Samsung SynchMaster 191N Monitor stay on fine for 15-20 min after that it goes dark,, and power swtich thrun itself off, cannot turn on or off, unless I unplug power for few min and replug. Then stays...


If the OSD has display and after a min goes dark that monitor has 2 possible problem. 1. bad electrolytic capacitor from secondary power supply to inverter area or fault semiconductors around inverter area. 2. Bad CCFL or fluorescent lamp of lcd panel it may be reddish color.

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Monitor color is pink at switch on. 5-10 minutes after normal


There are many things that could be causing that, but to fix it would take some electronic equipment, schematic, and know-how. It could be as simple as a faulty potentiomet, but a shop would charge you more than it's worth to fix it. My advice is to live with it until it gets too bad, and invest in a new one If you're not ready to advance to the LCD monitors yet, check with a Used Computer Store- they usually have CRT monitors at a reasonable price. Hope this helps.

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Taking 5 min to warm up


if the monitors tub is old or cold its take sevaral minutes to warm up

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2 Answers

LG studiworks CRT


The monitor needs to be repaired. The cost of the repair maybe too high. I suggest you get a quote first or gjust et a new LCD monitor.
Do not try to fix it yourself because there are high voltages inside these CRT monitors unless you understand display electronics and the dangers etc.

Oct 01, 2009 | LG Studioworks 563N 15" CRT Monitor

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Overall color change (greenish) 10 seconds at a time with multiple computers


It is due to dry soldering on the crt board. Try to resolder all the dry joints on the crt board.

May 23, 2009 | Gateway EV 910 19" CRT Monitor

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Samsung Monitor 720N


check the resolution of the system make it as 600*800.

Jan 06, 2009 | Samsung SyncMaster 720N Monitor

1 Answer

CRT monitor's background colour is changed to dull yellow colour


hello,
i think this problem accure due to chage of CRT CATHODE. if you are not a hardware engineer then check it from hardware engineer. any crt monotor have 3 RGB Cathode to release electron on screen. the electron comes shodow mask and create a pixel on the screen the pixel make a picture. The RGB color make the perfect picture. if your picture is dull then i think that happen due to less negative chage of Cathode or any Crt base Bios ic is failior. so you have to checked it from hardware engineer.
ok
bye

Oct 22, 2008 | Samsung 21" FLAT CRT COLOR MONITOR

1 Answer

Picture goes on and on constantly


I have the same problem. Picture cuts out completely then back on. When I first turn it on, it does this constantly for about 15-20 mins, then about once every 30 mins or so. The sound is fine, but the picture just flashes on and off.

The color is also starting to shift a lot and cannot be fixed by adjusting COLOR-BRIGHTNESS-PICTURE in the video control menu system. Nothing seems to correct this. I've even unplugged the TV over night to see if it needed some sort of reset. Model = KV-20FV12. Purchased in 2004

My connection is a direct cable connection - Comcast cable. Same problem persist while showing a DVD as well.

Dec 18, 2007 | Sony FD Trinitron WEGA KV-32FS100 32" TV

4 Answers

Monitor not switching on.


hi, the crt(cathode ray tube) that is the display of your monitor has been damaged.
nothing happens to your monitor if you watch movies.

tips to keep your monitors longlasting;
1.do not keep UPS next to the monitor
2.do not keep speakers next to the monitor
3.do not keep any device that has magnets or electromagnets in it.


bye take care & have a nice day.

Nov 14, 2007 | Samsung SyncMaster 753S 17" CRT Monitor

1 Answer

Screen width keeps changing


This is a hardware problem. There's a high wattage resistor inside which normally gets quite hot. Eventually this resistor desolders itself due to heat and breaks the circuit. Any repair-shop can fix this by re-soldering mentioned resistor (it is easy to distinguish it by its brownish color) using a suitable solder or by replacing this resistor by a more powerful one. Another workaround is to change a video mode to, say, 1280x960 or 1152x864 (while in these modes, monitor circuit bypasses the said resistor).

Sep 10, 2006 | LG Flatron 915FT 19" CRT Monitor

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