Question about HP Compaq 1720 (Carbon, Silver) 17" LCD Monitor

1 Answer

Compaq 1720 monitor: the green light on the power supply went away, the voltage converter was very hot and the monitor went blank

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 11,361 Answers

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

Posted on Sep 03, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Hi, My Relisys monitor does not start at all, even the green LED went off. At first, it begun with sudden shut-offs on its own, then it became a permanent out-of-service. Please give me a hint for a...


The power supply (the part of your monitor that converts the AC line voltage - taken from your wall plug - into the various voltages required by your monitor) inside you monitor has failed. If you have the expertise and test equipment you can diagnose the problem and determine which component within the supply that has failed.

Aug 09, 2011 | Relisys Intro TE770 17" CRT Monitor

1 Answer

My Compaq 172 monitor won't stay on but for maybe 30 seconds then goes blank. When it does this, the on/off button is still lit up, but I have to lush it manually to get it back on for about another...


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.

Jul 21, 2011 | HP Compaq 1720 (Carbon, Silver) 17" LCD...

1 Answer

Blank screen, no light indicating monitor is on, makes clicking noise when i click to turn on. It is a hp mx705.


It is either the power supply or the deflection circuit.
If you can read electronic circuits and know how to use a DVM. Check the power supply voltages and the deflection circuit for any short..
Best of luck.
www.aaatvservice.com

Mar 04, 2011 | HP Compaq FS7600 17" CRT Monitor

1 Answer

The monitor led is green but it gives white flash and still blank


Check the volatage regulator in the mainboard resolder all you found dried unsolder parts inside mainboard. Voltage test the regulator IC if have a voltage flow 2.5 to 5v DC. check ribbon cable connector from mainboard to controller board if properly connected. In the controller board find the small fuse test it for open.
Reminder:
When you voltage test in the power board
in the primary section of power supply
use hot ground. Do not use the hot ground
when you voltage testing the secondary
power supply, mainboard and controller
because it will cause of damage
semiconductor. For safety use cold ground
for secondary, mainboard and controller
board.

Aug 29, 2009 | ViewSonic VA712 17" LCD Monitor

1 Answer

Screen Goes Blank


Ive seen this on other monitors. Look for a 1 and 2. Some monitors do NOT auto detect a signal, and this one might not. Look for a way to set the monitor from Digital input to VGA input. Try that and see.

Jul 21, 2009 | Dell E173FP 17" LCD Monitor

1 Answer

Monitor L17AMTN flashes WinXP desktop, then blanks.


dmellman, Before you open it up, try this! With fully booted pc and WIN DESKTOP screen up, reconnect the L17AMTN . Have a bright flashlight handy so that when the lcd screen flashes on for 1 second and then goes dark, you will want to check to see if the desktop remains on the screen even though you think it went away. Shine the light 1-2 inches from screen at different angles. Has the desk top completely disappeared or is it still being displayed? Do you know about Cold-Cathode-Fluorescent tubes and their Inverter type power supply? I assume that this unit also has a "lay on floor black box switch-mode-power-supply" that is supposed to supply raw 12v-14v dc to the monitor? This symptom is typical of lcd monitor power supply failure, and or inverter board failure. Not to mention the fact that the CCFT's could be a bit tired from use. YOUTUBE has some videos on taking apart lcd monitors. also do search on web for "bad caps on lcd boards" or "bad caps in lcd monitors". I should think that this Tatung might suffer from swollen cap-itis. get back to me with results of your investigation. Im louie12fix on fixya or lmistyrel@aol.com just nrth of Windy City

Apr 17, 2009 | Tatung L17AMTN 17" Flat Panel LCD Monitor

1 Answer

Compaq tft 5000 out of work


Your backlight probably went out and needs replaced.

Jun 18, 2007 | Compaq TFT5000 15" LCD Monitor

3 Answers

Compaq Monitor


OK All these Compaq's have a Power Supply problem, or a Horizontal Voltage problem.. meaning they are on the way out. The SMPSU's in these units often fail along with the Horizontal Drive Circuitry. I think it is time for a new one? Repair of such a unint would barely be "Ecconomical" IMHO.

Aug 07, 2006 | Compaq fs740 17" CRT Monitor

Not finding what you are looking for?
HP Compaq 1720 (Carbon, Silver) 17" LCD Monitor Logo

152 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18389 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Tony

Level 3 Expert

2600 Answers

Are you a HP Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...