I have a Samsung 940 MW monitor in my RV. It has worked fine for several years but now will. It turn on unless I unpug the power for 10-15 seconds. How can I fix this?

SOURCE: SAMSUNG SYNCMASTER 191T PLUS

I have the same problem. Have you found a solution?

SOURCE: samsung 226bw weird display problems

At first you should clarify if your GPU or LCD is broken.
Do You have any chance to try another monitor with your Graphicadapter or to try your monitor on a different PC?
Moreover you should try it with a new cable.

The symptom of weird symbols sounds most likely like a overheated or wrong-plugged Graphicadapter

SOURCE: samsung

I have two of these, both of which were just dead. The back snaps off after the screws are removed and the power supply board is the small one with heat sinks and a number of vertically mounted electrolytic capacitors (cylindrical, maybe 1/2 inch in diameter, dark plastic covering, aluminum showing at the top). Some of the capacitors were bulged at the top which is always a bad sign. I decided to replace all of the capacitors in the area between the two heat sinks (six of them). The total cost from Digi-Key Electronics was under $9.00 including shipping.
820uF 25V (2)
1000uF 10V (2)
330uF 25V
330uF 10V
Get ones rated for 105 degrees centigrade.

Good as new!

SOURCE: Samsung monitor picture clicks off after 2-5 seconds...

Yes, It sounds like the backlight inverter circuit is shutting down. No inverter power, no backlight. On some monitors the inverter circuit will shot circuit the power power supply which makes the power light flash on some it just kills the backlight. You can usually check with a flashlight. Hold the flashlight pointed at the screen and see if you can see any of the icons or background picture. If you can then it is the backlight circuit or backlight tubes, usually the circuit.

Buddy

Ben Wabnick

• 2404 Answers
• Posted on Nov 30, 2009

SOURCE: Samsung 932B Plus monitor does not turn on. Blinking LED

If you can open up the monitor from the back and get the cover off. Look on the power board and see if there are any puffy capacitors, most of the caps will have a silver flat top but if there are any bad ones, they will have a puffy top that stick up.

If you see any then make sure you replace them with capacitors of the same Uf rating and at least the same volts or more.

If you don't see any puffy caps then that means the screen is bad and the whole monitor would need to be replaced.

Testimonial: "Opened the LCD monitor up, and it was as he said. A bad capacitor. Thanks!! Replied within minutes."