Question about Sharp LL173C 17" Flat Panel LCD Monitor

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My monitor does not turn on

There was a storm yesterday and the power went out . I have it connected to a surge protector,everything else is working. The yellow on off light is blinking but it does not turn on

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Re: My monitor does not turn on

There is power problem  in your monitor.check the fuse,regulator,and horizontal output transistor

Posted on Oct 19, 2007

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I have a motororola model MBP8 PU babby montior quick working after power went out they turn on but but don't work

Is it plugged into a surge protector? When the power comes back on to a lot of residents at the same time, a power voltage spike occurs that can damage electronics. All items that have any electronic circuits, need to be protected by a surge protector. Surge protectors do not protect against lightning strikes.

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The display is dark

Not enough information.
Is the unit receiving power and do you have a power LED ?
Is your power connection to a surge protector or power cube.?

How old is the unit ? Has it been dropped or in a electrical storm or outage ?

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Got a new surge protector/power strip. I


Please try the monitor without the surge protector to ensure there are no isues with the protector

If the monitor comes on you know its the protector, if it still fails then i recommned the following

1) ensure the fuse in the plug is ok and not blown
2) Change the 3 pin power socket for another one

If after this all fails then for some reason something has blown in your monitor and you will need to book it in for further inspection

If this has been useful please leave positive feedback/vote/testimonial as this will help me greatly - Thank You again

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We lost power last night for 4 hours due to a storm and when it came back on the monitor did not come back on. I plugged it into my work computer and nothing, no grenn power light, nothing? I bought this...

Power supply or fuse is shot most likely. You can use a voltmeter and test power coming from power supply to main board. Some units use a high voltage transformer instead of a power supply. You can get parts at

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I am unable to turn on/off my dell 20" monitor. On/off button doesnt work.

Hi! Most modern monitors have on/off switches that are NOT actual power controlling devices. (i.e. they simply tell an IC chip to cut power to the display section while leaving the rest of the power supply energized.) In the earlier monitors, when you flipped that power switch, you actually cut AC power to the whole unit. Now, with today's faster computers, LCD and plasma displays, instant-on is the norm. Regardless if the button is physically damaged(usually pressed too hard) or the circuit is defective, unless you are a tech you'll have to take the unit in for repair. Is the monitor under any type of warranty? Was there a storm recently? Do you use a surge protector? If the display was damaged at all by the storm, there is a very good chance you'll be covered by the surge protector warranty.(that's what you paid for)---hope I was of assistance---Rick

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The monitor was working one day and the next day, it would not come on, screen black. My grandson has had the monitor for almost three years.

I'll hope for the best and assume the simple fix first. Check the plug at the back of the monitor to insure it wasn't pulled out slightly. Sometimes, moving something around can cuse the plug to lose proper connection.
Also, check the power source to insure that you have power to the unit. We had a lightening storm recently and the power strip surge protector did it's job. I turned it back on and everything powered up again.
I hope this helps... Good luck!

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1 Answer

Blank Screen

Be sure that the power cable and the video cable are plugged into your monitor, the power cable is plugged into a good outlet, and the video cable is plugged into your computer. It's possible that you simply have a loose cable.

If everything is installed correctly, and if the screen is completely blank (no "cable disconnected" or "test mode" messages), then it sounds like your monitor is simply dead. Since there was a heavy wind storm recently, it was probably hit by a power surge. If you don't already, I recommend that you use a surge protector for all digital equipment.

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1 Answer

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try to get a second monitor that you know works and plug it into the computer. This will tell you if it is the monitor or the connection to the computer. If everything appears ok with the new monitor then you have to get a new one which is probably the case

Sorry for the news. Next time there is a big thunderstorm unplug everything and make sure that your computer is plugged into a surge protector at all times. This will save a lot of money and headaches

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