Question about Chi Mei Corporation 221A Monitor

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Chi Mei corporation 221D monitor problem no power

There is no power on the screen not even to power the orange light. I have owned it for about 9 months. I had a quick look and a fuse behind the IEC connector is blown but would there be something else causing that.

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  • Anonymous Mar 12, 2014

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I have a screen like that C221A and the switch mode power supply has failed but I hear that the electrolytic capacitors need replacing. Fixing switch mode power supplies can be a problem (I'm an electronics engineer) so the best way is to replace all electrolytics in the power supply and then to plug it back in. You'll need a soldering iron and reasonable electronic repair skills. Look on ebay and you'll see repair kits.

Posted on Apr 07, 2015

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Well i want to tell u that is a very common scenario u just replace the fuse and sometimes due to power low and high the fuse gets blown and u might also wanna check ur power chord.

Posted on Oct 24, 2008

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Posted on Jan 02, 2017

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1 Answer

I cant get a picture on the screen, all it says is no signal found.


first off it needs either an antenna or a cable hooked to it and the the input set to that and a channel scan done Monitors are not normally used as a TV however .as they do not have tuners built in

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I have A Chimei CMV 221D LCD monitor. I am thinking from memory it is a 17 or 19in monitor. It's black in colour. It worked well, loved it but one day I booted the computer up and the light went from...


boot your computer into safe mode that eliminates any special resolutions from your normal windows if your display is good in safe mode then your computer resolution is set at a level the monitor cannot use you then will need to reset your normal resolution to a lower level

Mar 25, 2017 | Chi Mei Corporation CMV-221D LCD Monitor

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Screen regularly drops out for 5-10 seconds at a time


Inspect the caps for leaking/bulging tops, check the 5vdc and 16~18vdc power supply.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.


Post back what you find.

Dec 11, 2010 | Chi Mei Corporation CMV-221D LCD Monitor

1 Answer

My screen stopped working at first it was a black screen with a very faint greying where my background should be shown the power switch was working i dissconnected it yesterday and now i plugit in and the...


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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

Jun 06, 2010 | Chi Mei Corporation 221D-NBC Monitor

1 Answer

The display shows no image


Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, 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

Jun 02, 2010 | Chi Mei Corporation 221D-NBC Monitor

1 Answer

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Sounds like an inverter problem. If the power supply is internal replace the capacitors coming out of the voltage regulators. These are usually 1000mf and/or 470mf. If that doesn't do the trick look up the numbers on the 8-pin chips that drive the secondary transformers on the inverter to see if they are getting the right voltages.
Good Luck!

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2 Answers

Blard monitor


hi there, blard screen means you have a problem at video section. try to adjust focus control at fbt. if still the same problem, replace fbt. ty

Dec 26, 2007 | Chi Mei Corporation 221D-NBC Monitor

1 Answer

The color of the screen is not correctly appearing.


if your monitor has color controls try them,if your monitor has auto adjust try that too.if you can test the monitor on another computer try that as well to verify the monitor is causing the problem.if none of this works its safe to assume that the color control circuitry in the monitor has failed and with todays monitor prices it is cheaper to replace than to repair.

Dec 26, 2007 | Chi Mei Corporation 221D-NBC Monitor

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