Looking for AC power Adopter for CTX LCD monitor

first check with your both power supply out put is coming 19 Volts dc.
if its not coming check with multi meter primary and secondary of your adopter continuity.if no continuity replace with proper working adopter.

remove the rear cover then tried to make a voltage checking since as you said the power adapter is good so what you need is a voltage checking going inside. you need a digital tester then make a voltage checking at the lcd control board if the dc supply goes through or not present. you can check also a bulged capacitor or burnt parts at the lcd control board.

On eBay or Google Product Search or Amazon, search
GEM GL-822 power
or
GEM GL-822 12V 5A
There are a number available there. It is 12V DC, 5A

Are you looking for the pwoer cord for the AC adapter or looking for the whole set of adapter with power cord?
http://www.buy.com/prod/compaq-presario-1520-1520ap-1520ca-new-ac-power-adapter/q/sellerid/20485684/loc/101/209134888.html

http://www.chargerbuy.com/lcd-ac-adapter/hp-lcd-ac-adapter/lcd-monitor-hp-compaq-l1520-ac-adapter-12v-5a.html

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
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

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.
Please leave rating if it helps.

If it says DC input and there are no other socket which has three prongs(this is for the AC input), all you need is an adapter, which you will plug to a wall socket and the other end would be plugged to the flat panel, it works like a transformer, just like any power supply, like for laptops, just try to find the correct voltage, 12v,16v or whatever is needed by the panel. Often you can find the voltage require on the panel itself, reading as POWER INPUT, xx volts or Power requirement.
Thank you for using Fixya.com

You can an AC adapter for your LCD from EBay.
Check this out.

http://www.12vadapters.com/adapter/power-supply/12v/for-lcd-screens/sampo-p702m-p707m-p704m-2.html

http://cgi.ebay.com/AC-DC-power-adapter-supply-4-viewsonic-VP181-VP181B-LCD_W0QQitemZ120543491973QQcmdZViewItemQQimsxZ20100316?IMSfp=TL100316141006r17343

i hope this is what your looking for , go to this link:

http://insidecomputer.stores.yahoo.net/viewsonic-va720-60w-4pin-lcd-ac-power-supply-1599-1ye72060415991.html

Power Adapter Input AC 100-240V, 50-60Hz, Output DC 12V/4.0A

This may help. Just make sure you have the right dc output mentioned on the back of your monitor (12v4a or 12v5a) if any lower your monitor will shut off after displaying for few seconds then electrical smell will come out from your ac/dc adapter. When it overheats it shuts off.

http://www.alibaba.com/product-gs/51210391/TFT_AC_Adapter_for_12v_4a.html

Manual
http://www.princetongraphics.com/site/download/manuals/vl1716.pdf

jim

my supply has the following specs.
LIEN CHANG
BSA-35-115
AC input- 110-240v 1A  47-63Hz
DC output 10-17v  3.5A
Nom. V 12v
Nom current 2.9A
output power 35A max.

With this you can likely find a universal "brick" that covers your needs

Jay