Question about LG Studioworks 700S 17" CRT Monitor

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How can i fix my problem to repair amonitor with no power?

How can i fix my problem to repair a monitor with no power?
sorry i am a graduating student want to know more about monitor repair and troubleshooting,please kindly guide me,, thank you...

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Due to high voltage you should have some hands on experience to fix this problem, so if you do not know, I suggest you take a course in electronics first before you try fixing a monitor.

Posted on Feb 06, 2009

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My monitor keeps turning on and off repeatedly.

The Ballast is most likely bad. It is drawing to much power and kicking out the auto reset circuit. This is not worth repairing.
Sorry for the bad news but it happens to many LCD/LED monitors.

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Samsung 931B monitor (doesn't turn on)

Check for blown capacitors on the power supply board, this is a very common problem with LCD monitors. Here is a link to a web article showing what to look for. The second link is to a source for capacitor repair kits for that series monitor.

Jan 14, 2013 | Samsung 913B 19 inch LCD Monitor

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If the power light does not come on, first try another outlet. If the monitor has a removable power cord, try another cord. If those don't work, there is a fault in the monitor power supply. Most likely the unit has bad capacitors. You will have to check them visually (you have to take the monitor apart). If they look domed on the top, and perhaps stained, they will need to be replaced. If you cannot solder, then it's time to either take it into a service centre, or replace the monitor unless you have a friend who can replace the capacitors.

You can Google "replace capacitors in LCD monitor" to see examples of what must be done. If you inspect the power board and the capacitors are fine, there may be another problem with the power board which means unless it's a monitor worth over $200 it's unlikely worth having the power board replaced. Donate it to a school for their students to practice on.

Oct 09, 2012 | Computers & Internet

1 Answer

My LG Flatron L1715S works sporadically - it is blank when activated, but activates either by pushing the on-off button many times OR by rebooting several times. Is there a quick fix to this that does not...

No, sorry, it's not a simple fix. The usual reason an LCD monitor does this is because capacitors in the power supply fail. Then the inverter circuit which provides power for the backlight lamps doesn't work properly. In many cases, replacing the capacitors is all that's needed to fix the trouble, but it means opening the case, removing the bad parts, and obtaining and installing new ones. It's not a very difficult repair as far as repairs go, but it's going to need more than a screwdriver.

Many websites and videos are available that detail the repair procedure for different models, and capacitors are readily available from many sources. If you know someone who has some experience with electronic soldering, or you're willing to try it yourself, you might be able to rejuvenate this one. If not, you're probably best off buying a new monitor. Basic models are quite inexpensive now, and if you pay someone to fix yours it might cost nearly the same.

Jun 07, 2011 | LG Flatron L1715S 17" LCD Monitor

1 Answer

I have amonitor 32 inch when i turn it on i see meany horizontal lines this lines colored how can i solve this proplem pls?

Hello When you get horizontal line, especially colored, it typically means there is a problem internally: either with the LCD inverter (backlight), LCD Circuit board (interprets incoming signal) or the Display panel itself. Sometimes shaking it around can clear up the issue slightly but for the most part it's time to get a new screen. If you have pictures I can verify this is the issue. Any other questions, feel free to ask.

May 13, 2011 | Polaroid Computers & Internet

1 Answer

The power light stays on but there is no image at

More likeley to have bad caps in the power supply, that is the first place to look, see example of failed VIEWSONIC monitors due to bad caps:
VA 730 may have the same chassis as VA720. If the cpas are bad, you should replace them with PANASONIC FM or FC series caps from DIGIKEY. Your college should have good electronics test equipment to repair these monitors.

Feb 24, 2010 | ViewSonic VA720 17" LCD Flat Panel Monitor

1 Answer

My acer monitor shutdown after 1min on

Look inside to see if it has any bad caps in the power supply, also look for 5v and 12v in the power supply, 90% of failed monitors are due to bad caps, see examples here:

Jan 15, 2010 | Acer AL712 17" LCD Monitor

1 Answer

Power saver problems

Did it come out of power-save mode when you connected it to the other computer?

Does your laptop have a "toggle":
* video-output only to internal LCD screen
* video-output only to external monitor
* video-output to both displays

If so, toggle the setting to "external" or to "both".

Dec 14, 2009 | LG W2252TQ Monitor

2 Answers

Comes on and blinks several times and sometimes stays on but usually have to turn off and on like 10-12 times to get stay on


It sounds like you have a monitor with a common problem, we have repaired many Samsung monitors with this problem. After a few years some LCD monitors will blow a power supply. The problem is caused by parts called capacitors overheating in the confined space of the monitor. If you are good at electronics repair/soldering you can usually fix the problem. Check out a few pictures on my web site You can take the back cover off your monitor and look for the bad parts,replace any that look like the pictures and your monitor should work fine. The capacitors do need to be installed with the correct + and - connections, note the stripe on the old one and insert the new one the same way. If you can't do the repair we offer a repair service, contact us for more details or if you have more questions.

I hope this helps, if so please rate my solution.

Corporate Computer
Over 21 years of computer and printer support/repair

Aug 14, 2009 | Samsung SyncMaster 931B 19" LCD Monitor

1 Answer


I am sorry about this but the correct repair for this issue is replacement of 4 transistors on the main power board inside the monitor I just completed a repair on a dell 17 inch monitor it now works flawlessly. the process can be found on the internet and it is very delicate work. if you can all their service center you used then by all means call them,
you have a nice day now.

Oct 27, 2008 | Dell E171FPb 17" TFT LCD Flat Panel...

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