Never had problems with monotor, Suddenly last night I have horizontal lines of various widths and shades of gray over the whole screen. The quality of the display is also bad, colors are not true, overly bright and lettering is fuzzy.
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This is bad news, the problem is the screen panel itself, replacing the display would exceed the price of a new monitor. It is far cheaper to buy new, than to try and fix a unit that will cost an arm and a leg.
anything can be repaired if you have the money and are willing to spend it. However it would be better to get a quote and weigh up the pros and cons of replacing it cheaper than the repair A new monitor wilol also have 3 years warranty ( Samsung)
Does this unit have an external power supply (wall wart)? If so, substitute a known good one of similar specs. If the original is 12 Volts/1.2 Amps, find a 12-15 Volt/1.2 or greater Amp.
DO NOT go over the voltage more than about 15-20%.
DO NOT go under the current rating less than 90% for just long enough to see if it works.
Be sure the connector fits PERFECTLY!!! Some will appear to fit but will be loose.
Do not under any conditions replace a DC supply with an AC one or vice-versa.
I know exactly what your talking about. I've seen in many times. It' happens too in CRT monitors as well as LCD. It could ALTHOUGH be as simple as a bad cable catching interference. Most likely though, it sounds like a bad LCD driver board or video board. If you have warranty, call it in. Otherwise see if it lessens with adjustments of contrast and brightness up and down. This directly affect the driver board power and can improve it enough to be tolerable again.