20 Most Recent HP Compaq 1720 (Carbon, Silver) 17" LCD Monitor Questions & Answers


Try set down the vertical frequency to 50 or 60
http://electronicshelponline.blogspot.com/

HP Compaq 1720... | Answered on Sep 08, 2014


Hello,

The power supply is 12v. There are two different versions of that model monitor and the plug connector for the power is different. One version has 4 pins on the power connector on the other has just a center pin and barrel. You need to check the connection on the back of your monitor before you order that adapter to be sure and get the correct one that you need. You can get both type here:
http://www.ccl-la.com/catalog/index.php?cPath=25

HP Compaq 1720... | Answered on Mar 13, 2013


make sure you have a wall-mounted rack which suits your monitor. Contact your PC dealer for details ..

HP Compaq 1720... | Answered on Oct 29, 2011


Failing Power capacitors. The capacitors hold the charge necessary to build up the voltage that lights the screen. When they leak or fail to hold the charge, the screen will cut out. It could also be a fault in the switch circuitry. Really needs looking at by a qualified technician.

HP Compaq 1720... | Answered on Jul 21, 2011


There are two pairs on the connector: one pair for 12vd, one pair for Ground return.
I did not work on one of this model for a couple of years, but I use Ohm meter to find out by check for 0 Ohm between the Monitor metal chassis which is ground, tow of the four pins should read 0 Ohm, that will be the Negative, the other 2 will be +12vdc (it should read 0 Ohm between these two 12vdc pins).

Please post back what you find.
Please leave rating if it helps.

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.

HP Compaq 1720... | Answered on Jan 28, 2011


aldo_tomazic

In regards to your issue with your monitor if you have changed out the VGA cord and tried the monitor on another computer but still have the problem this is a sign of a short in the monitor its self.

Note with modern electronics they have contact switches. What this means is means is you close the same circuit to turn a item on or off. The problem with these switches is that if there is a short that is not properly going to ground this can cause a charge to build up on the mainboard to a point where is starts turn on or off things on its own. If not fix this can damage the device more.

So you can try to take the monitor to a electronic repair shop but in most cases if maybe cheaper to replace the monitor. Another thing you can try is making sure that monitor is plugged in to a properly grounded plug. Less than 50% of house that were built over 10 years ago have properly grounded plugs. If you are not sure you can get a tester at your local hardware store. It looks like a 3 pronge plug with lights and it will let you know if the plug is grounded. Once you get the monitor plugged into a ground plug this may fix the problem for the time being.

Let me know if you have any more problems or questions

Issken
http://www.fixya.com/users/issken

HP Compaq 1720... | Answered on Jan 08, 2011


Looks like a component failure in the monitor, the backlight or inverter box has problems.

Its a common fault.

HP Compaq 1720... | Answered on Nov 13, 2010


Not very likely to be the switch itself, the switch is a tactile momentary switch, more likely to have failed power supply due to bad caps just like the rest of failed monitors here, check to see if your adapter is putting out 12vdc, then we need to find out if it is getting 12vdc all the way to the main board and the inverter board:
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Please post back what you find.

HP Compaq 1720... | Answered on Sep 03, 2010


You need to find out if the power supply is still putting out 12vdc, you may have to test it with a load (use 12v car bulb such as the brake lamp). It is getting hot can be due to bad power supply or too much load because of short circuits in the monitor. Please post back what you find about the power supply first.
http://www.unitedsale.com/AC-adapter-Power-Cord-Charger-12V-35A-For-Compaq-1720-LCD-Monitor-Brand-New_p_219.html

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague

HP Compaq 1720... | Answered on Sep 03, 2010


hi im josh in cebu phils. Maureen may i help you? If it happened yesterday that the contrast box keep on coming. there's a problem in your monitor.so try to check the buttons if covered with dust cleaning may solved the problem.Maureen if you have the manual use it in adjusting the resolution and if you dont have try to press the button mark + or increase just press both of the to the brightnest as posible so that you may be able to proceed another action. thats all for now.hope i helped you.good luck.

HP Compaq 1720... | Answered on Feb 26, 2009


Maximum resolution for this monitor is 1280 x 1024 .

Rate this solution as fixya if the above answers your question !

thnx

AD

HP Compaq 1720... | Answered on Feb 22, 2009


researched online for cord.

HP Compaq 1720... | Answered on Dec 06, 2008


I checked your monitor and judging by the picture, it requires an specific ac adapter. see photo below to see if this is what you see:

2edb0f8.jpg I show the spare part for this ac adapter is 308573-001. it runs approx $45 on google. Hope this helps.

HP Compaq 1720... | Answered on Jun 08, 2008


You may need an adapter plug. They come with new monitors so ask around to see if anyone has one you can borrow.

HP Compaq 1720... | Answered on May 11, 2008


You can get replacement buying at any computer stall.

HP Compaq 1720... | Answered on Apr 21, 2008


Your actually thinking about it the wrong way.
Replacing the screen in LCD's is more expensive then replacing the monitor. Stupid I know, but that is how they ensure you have to keep upgrading. Same thing applies to a laptop motherboard for the same reason.

You do still have one small light at the end of the tunnel though.
Check around on eBay or similar and you maybe able to find a complete monitor with a dead power board that you can salvage the screen from. Do a search for words like Faulty, broiken, not working in the computer section.

Hope that helps. =)

HP Compaq 1720... | Answered on Apr 11, 2008

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