Top 20 Microsoft ChiMei CMV938D 19" Widescreen LCD Monitor Questions & Answers

I'm betting on the PS board. Open it up, and look for some blown up caps. Wouldnt be hard to miss

Try this link to download it. http://support.dell.com/support/index.aspx

try to Change http:// to https://like this :http://www.facebook.com change to https://www.facebook.comyou will ask for trusting that certificate.just yes.https is secure website protocol.if that still not working, change www.facebook.com to 69.171.224.13like this :https://69.171.224.1369.171.224.13 is IP Address facebook.

This is a protection by the authority concerned to keep the staff from using facebook when involved in work. The facebook site will be blocked on the main server and so it will not be available for viewing.

have you try to use headphone or other speaker except on the built-in speaker of your LCD?, if the sound still not working then re-install the sound driver of your motherboard.
Thanks

How old is it? If it still under warranty get it repaired, it sounds like the switch is gone or the energy saving s/w inside is bad and is not detecting when/when not to turn the display on/off.

You will never reset your monitor updating your monitor driver. There is buttons on it check your manual. And of course never forget to update your videocard drivers.

Try this site i always get my drivers from this site www.driverguide.com its one of the best driverdownloads site i've known for awhile.

You need to read your HD digital tuner and see if you can lower the video resolution to the maximum the monitor can handle, right now it is too high for the monitor to display. If the resolution is OK then the problem is in the monitor logic board.
Please post back and leave rating if it helps.
Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you

when community sites such as facebook and proxy re-routings are blocked by your employer, this means that you are not supposed to go there during working hours. FixYa is a support forum, not a site for aspiring hackers... please direct you question elsewhere

1. check the volume control in the task bar to see if you have the volume off
2. check the cable to the sound card.

Get a quotation on how much it will cost to repair according to where u live... if it's 10 to 20% the LCD, so get it fixed otherwise ...
Sometimes bad capacitors can cause these probs

my friend solved my problem for me while i was out thanks june

Sound like your display is having issues with the inverter board. When the power supply detects a short circuit, it turn off by itself. When you try several times, you may be able to "bypass" the circuit protection but the damaged parts still having problems. This issue may be related with the DELL display issues.

The display needs to be fixed by someone with experience in electronics repair.

probably power supply, dac-19m015, 2200uf bad capacitor.

I'm writing this using a recently repaired Gateway 900g. You may be correct about the power supply, as that was the problem on this unit. There was absolutely no response with this unit. No blue LED, no dim display. Nothing.

WARNING: BE SURE TO UNPLUG THE AC LINE CORD. THE POWER SUPPLY HAS DANGEROUS 120 VAC PRESENT IF LEFT PLUGGED IN. If you don't know what you're doing, it's best not to attempt a repair!!!

Disassembly is a bit tricky, and there's a variety of different sized screws used; so keep track as you go. First you remove the front bezel (be careful as the two control boards on the lower right need to be disconnected). There are two screws (lower left and lower right) that secure the shell, the rest of the frame is just a snap fit around the perimeter.

Then remove the 6 screws that hold the LCD frame to the rear plastic shell. Careful here as well, as you must disconnect the back light cables AND the signal cable to separate the LCD from the Power Supply / Signal Processing board.

The Power Supply board mates to the Signal Processing board thru a 2x5 pin header. This contains convenient points to check the +12V and +5V supplies. In my case the +12V was OK, but the +5V was reading about +2.5V...not good! THIS IS REALLY DANGEROUS TO CHECK AS THE 120VAC IS ONLY AN INCH AWAY.

Here was the key symptom on my unit. Your's may not be the same. If I disconnect the Power Supply from the Signal Processing board, then the +12V and +5V read correctly (as well as the +16V that goes to the Backlight Inverter section).

However, once I connect the Signal Processing board, the +5V drops to +2.5V. However, the Signal Processing board seems to run correctly off of an external supply drawing about 300mA.

On closer inspection of the Power Supply board, I notice that 4 capacitors had buldging tops (domed). This indicated some stress. These were capacitors C205, C206 (470uF/25V) in the +16V section; and C210 (470uF/25V) and C209 (220uF/25V) both in the +5V section. I didn't have a Capacitance Meter handy, so it was simpler to just replace all four parts with similar values. (There's a lot of latitude in making these substitutions.) But be sure you have voltages a *least* greated than those needed; i.e. 16V or 5V. They used 25V to have plenty of headroom.

After replacing the 4 Capacitors, the Voltages and Blue LED responded normally. After reconnecting to the LCD assembly, all was well. Reverse the disassembly process, and you are ready to go.

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Hi, sandjkroll, this kind of problem could be because of ur monitor or even because of the on board display  card on ur motherboard. To check ur monitor, u unplg display cable which goes to ur cpu and the power cable which goes to ur cpu. 
Them connect the power plug to mains, so no cable from the monitor should go to the CPU. Then u swithch on the the poower suply, and on the monitor. I
If ur monitor displays elongated screen still, and shows signal not found,and no display comes that means ur monitor needs to be send for service. and if there are no elongated screen and says no signal found, ur monitors fine, ur motherboad has a problem

From
Deepak

change the resolutions by going into display properties in control panel

this will help you adjust the resolution of the screen.

my monitor chimei tco3 is black and will not show sceen