Question about Soyo DYLM1798 Monitor

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Power supply is shut off abruptly

My monitor has a dim power light and wont come on

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Re: Power supply is shut off abruptly

Sounds like the power module went bad- the part is most likely cheap- but getting to it is NOT. Take it to a repair shop for an estimate- you might be better off buying a new one though...

Posted on Dec 24, 2007

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In a dell e177fpf lcd monitor all the capasitors fuses diodes in power supply and inverter board are ok.but the back lights remains 2 seconds.

Hello...I recently opened up my Dell E173Fpf monitor because the screen went black, yet the power button was green. I thought it was a capacitor problem. But before doing anything I gave the board a thorough inspection, looking for anomalies. I observed a substance, (later identified as silicon) puddled around the power connections. I gently removed the semi rigid stuff and didn't touch the capacitors as I had originally planned. I partially reassembled the monitor for a test run and it worked again. (Being 9 years old, I don't know for how long...) Only thing I can think of is that a spill happened at the factory and over the years it gradually "melted" to puddle around the wires behind the power input. (Weird, but that seems to be what happened.)

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1 Answer

Flashing green light and monitor wont start

There are one or two capacitors that open in the power supply, sometimes it will have a bulge at the top, making it easy to spot.

Apr 05, 2012 | Acer Computer Monitors

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LG Flatron L227WTG goes to black/dim

Your problem is a very common one. That model uses the Aip-0165 power supply board and when the capacitors on the board start failing if can't power up the monitor correctly so you get a dim picture, after continued use the monitor will fail all the way. Here is a link to a repair guide that will show you what to look for and replace on the power supply board to get it back up and running again.

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

Mar 25, 2012 | LG Computer Monitors

1 Answer

When playing games on my computer my monitor will blank out

First make sure your video card driver is up to date, and the monitor driver as well when they are available. If the computer reboots when this happens, there is a hardware conflict potentially.

If the monitor goes black like it was shut off abruptly and computer did not shut down- replace all the electrolytic capacitors in the monitor on the power supply board. This should forestall an inevitable failure of the monitor.

Feb 12, 2012 | Gateway FPD2275W LCD Monitor

1 Answer

I have a GEM 17" with power issues!

Sounds like your power supply capacitors are causing the power supply to shut down. Or you have a short in the monitor loading the power supply. You should try a different power supply.
Monitor Mike

Apr 24, 2010 | Scanport GEM GL-821A/B 17" Flat Panel LCD...

2 Answers

Monitor wont power back on, Tried almost everything. Some days it will power up , sometimes is wont. If my timing is perfect and I plug the monitor into power cord at exact time I turn on computer it will...

Hello Adam,

You have a monitor with a power supply that is failing. The most likely cause is capacitors on the power supply board. We have an article posted on our site at: That explains what they are and what you need to get to repair the board. If you don't want to do the repair yourself then we do offer a repair service, more information on this can be found at: If you have any questions please contact us thru our web site.

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

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Mar 14, 2010 | LG Flatron L1951S-SN 19" LCD Flat Panel...

1 Answer

Monitor problem

The power light is flashing green can indicate start/restart of the power supply due to shorts circuits or failing power supply due to bad caps, look for bad caps with bulging top first, see example of failed monitors due to bad caps:
Post back what you see insdie so we can guide you furhter.

Feb 20, 2010 | Acer 17" AL1706B LCD Monitor

1 Answer

Monitor comes on dimly then goes off

The most common cause of dim displays on this unit is a failure in the back light power supply. This problem can be fixed if you can do a little soldering. Here is a link to a repair guide that will show you how to dis-assemble and repair the power supply board.

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


Nov 17, 2009 | Samsung 225BW Monitor

1 Answer

Dim monitor


You just bought a new power supply for the monitor? Did you set the B+ voltage to the correct settings. Rebuilt power supplies for CRT monitors are not set correctly at the factory. Use your schematic to determine the proper B+ and then set this under load.


Jul 21, 2009 | Toshiba Tekbright 15" CRT Monitor

1 Answer

Screen going black, green LED staying on

Check to see if the image is Dimmed. Chances are the power supply on the FPD is either dead or not supplying power to the back lights.
Your problem is the power supply or the inverter on your board, you can replace it and it will be fixed.
(inverter is what supplies power to your backlights. A lot of the times the reason a monitor goes black and the green power button is on, is because the backlights shut off. in most designs of the 1730 the inverter is embedded on the power supply. That is most often the case on this problem. Power supply/Inverter=Replace it and you will have a spanking new looking nice monitor working again. :)

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