Question about CTX PV 720 17" LCD Monitor

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Ctx model PV720A

I THINK THE BACKLIGHT HAS GONE WE SWITCH ON AND GOES OUT AFTER 1MIN OR LESS CAN ANY ONE HELP OR NO THE CHEAPIST REPAIR SHOP WOULD BE WE ARE A SCHOOL IN SELHURST CROYDON

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  • orangelife Nov 28, 2008

    CTX PV720 LCD MONITOR TURN ON POWER IT COMES ON BUT BACK LIGHT DROPS OUT OR DOWN BETWEEN 30 SECONDS AND ONE MINUTE IF I SHUT IT OFF AND TURN IT BACK ON ANY NUMBER OF TIMES I GET THE SAME RESPONSE .
    I AM CAPABLE OF SOLDERING ETC WOULD LIKE TO SAVE MY INVESTMENT

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Hi...there,
You can saved even more repaired yourself. The problems on the backlight inverter power supply. Open it up and check all the capacitors, it look like a tiny battery cap on the side had writing on it. (Example 1000uf 16v ) if you are lucky you can spot it right away...with a bulged on top of each caps. If not, just replaced all of the caps... Good luck!

Posted on Dec 07, 2008

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Posted on Jan 02, 2017

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Hi, The problem with my Monitor is that after the


That LCD monitor uses a fluorescent backlight, and the symptom you are seeing probably means the backlight is failing. There are two possible problems:
1) Likely: The inverter board is failing. The inverter creates the high voltage needed to run the backlight and can shut down after a short time if the board is failing.
2) Less likely: The fluorescent tubes themselves are failing. This usually requires replacing the whole LCD screen, although experienced technicians can disassemble the LCD screen and change the bulbs. This is much riskier.
The best bet is to replace the whole monitor. If you are willing to take apart the monitor and try a repair, you may be able to get an inverter and fix the problem.
Sellers on eBay usually carry a lot of models of inverters and may be able to sell you one and guide you through a replacement. However, this is a moderately advanced repair.
Search for the HP exact model and "inverter" on eBay

Apr 11, 2011 | HP Vs17 17" LCD Flat Panel Monitor

1 Answer

Turn monitor on picture stays on for about 30 sec to 1min then goes off.


If it is just the screen going dark then your backlight controller is faulty and needs repair.

Mar 02, 2011 | Dell Computers & Internet

1 Answer

Faulty monitor ctx pv720a. The screen has the


Try another cable, or check the plug for bent pins. If they are all good, check that the monitor is set for VGA input (if it supports VGA and DVI) as it may be looking for a different input. Then replace the monitor. It's not common, but video processing circuitry can sometimes fail, and yours may have. New 17-inch LCD monitors are quite inexpensive now, so it would probably be more economical to replace this one than to try repairing it.

Jan 01, 2011 | CTX PV 720 17" LCD Monitor

1 Answer

When I boot up my computer, it takes my Acer monitor 20 minutes to show the desktop. It flashes the Acer logo, then goes black, then flashes again, and repeats till it finally comes on. Could it be a...


It's probally the inverter board that drives the backlight in your monitor is failing causing the digital board to reset. I think Acer has a 3 yr warranty. If the monitor is less than 3 years, I would call them and ask them to repair it. They will fix it for free if it less than 3 yrs old, it will only cost to you is shipping it to TX. Hope this helps.

Aug 06, 2010 | Acer AL2416WBSD 24" Monitor

1 Answer

Ctx pv720a monitor goes blank


This is what inverter board looks like:
http://www.shopjimmy.com/catalogsearch/result/?q=CTX%20PV720

Look for bad caps also, more likely to need new inverter board, warning, you can have bad lamp assembly also.
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/

Jul 27, 2010 | CTX PV 720 17" LCD Monitor

1 Answer

Hi we have a ctx monitor PV720A that stays on for a couple of seconds then goes black


glenn659, possible cause is bad internal switch-mode-power-supply" failure or SMPS is detecting something wrong with lcd cold-cathode-fluorescent-tube backlighting circuit, (INVERTER) and it goes into SHUTDOWN mode to try and prevent a catastrophic failure from occuring. Glenn, visit youtube, search for video clips on LCD monitor disassembly and also also research BAD Capacitors or Swollen Capacitors and also the "WHY DO LCD MONITORS FAIL PREMATURELY" Certainly your's will be in the top two causes! Did you do the flashlight test with your monitor "on" and connected to a known good PC with the WIN-desktop screen showing. Even though screen is BLACK it might still show the desktop when you hold the light about 1" from screen. Some will, some won't depends on condition of the power supply. In any case get back to me with your plan of action you intend to take after viewing YOUTUBE stuff. Bye for now. I'm louie12fix on fixya or lmistyrel@aol.com

Oct 02, 2009 | CTX Computers & Internet

1 Answer

My monitor goes dim after a few minutes. When you switch it off and on again the dsplay is ok then becomes so dark


Hello,

How dim is dim? If the picture is still visible just like half as bright then your have backlight tube problem and unit LCD needs to be replaced, not worth repair price. If the picture goes out almost to a black screen where you can just bairly see a faint image then you hold the screen just right then you have a backlight inverter issue. If the problem is the inverter then you should be able to replace a few parts and get your unit back going. If you think you can open the unit up and maybe solder a few parts then I would open the case and look for bad capacitors on the power supply board. I can send you pictures of what to look for if you are interested. We also have a repair service for those units, most power issues run $15.00 plus shipping. Let me know if you need help opening the unit and checking parts.

Jun 17, 2009 | Dell E152FPc 15" TFT LCD Flat Panel...

3 Answers

Monitor goes dead after after switch on after 3seconds


CCFL backlight may be busted.. also ccfl inverter may need repair or replacement too..

Mar 09, 2009 | GNR 19M1 19" LCD Monitor

1 Answer

Ctx pv 720 lcd monitor backlight drops post plus 30 seconds!


Hi...there,
The problems on the backlight inverter power supply. Open it up and check all the capacitors, it look like a tiny battery cap on the side had writing on it. (Example 1000uf 16v ) if you are lucky you can spot it right away...with a bulged on top of each caps. If not, just replaced all of the caps... Good luck!

Dec 06, 2008 | CTX PV 720 17" LCD Monitor

1 Answer

CTX PCU monitor


A reputable computer or TV repair shop could probably fix it, but it will continue to be prone to failures due to its age. Also, the cost would likely be 70% (or more) of the cost of a new one.

I would recommend replacing it with a new one....you'd be pleased with a nice 17" LCD monitor...but if you're concerned about price...the CRT models are still a little cheaper.

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