Question about CTX PV 720 17" LCD Monitor

5 Answers

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 turn on monitor and it is fine for 30 seconds or so then then the backlight drops but the images are still there can be seen with external light

Posted by on

  • orangelife Dec 03, 2008

    I know its gotta be capacitor or power transistor circuit but where exactly is the low power transistor controller

×

5 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 237 Answers

I found a monitor on sale 1/2 off...
http://www.bargainstock.co.uk/Product.asp?pid=481

Hope this helps!

Posted on Dec 03, 2008

  • 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.

  • CTX Master
  • 19,396 Answers

The backlight inverter is faulty, the lamp should still be good if it powers up.

I am in North London, and a call out in Croydon from here will be expensive (with part about £100+).
If you are in Croydon better to find a repair near you or replace the monitor.
Even getting a service near to you the repair wont be below £60/£80 that is the price for a new 17" TFT.

If you go at PC World repair centre in Croidon, for example, you will have the job done for £68 plus part (Chrismas special price).
That is about £80.
An unlicenced repairman, in the best case will charge you £50 or so.

You can order a new 17" TFT from PCWB for £.82 inc., then sell on ebay for spares (£20 or so) the old screen.
See PC WORLD BUSINESS RECOMMENDS
Acer V173b

If you go to a staples near you , you can buy a new 17" for £73 :
Item Code 394010, that is roughly the price for a repair.


Posted on Dec 03, 2008

  • 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.

  • CTX Master
  • 4,806 Answers

Yes you are right and its the inverter or the inverter coil (backlight) which is going and i think the coil because it power up for a second or two, take it to a computer repair shop they will probably be able to fix it fairly cheap if its the coil!!! I live in the uk so here is an address and phone number for you in croydon.

PC Servicing London South
PC Servicing London South
Tanfield Road,
Croydon,
Surrey
CR0 1AL

Tel: 020 8681 8693

kind regards

Posted on Dec 03, 2008

  • Lee Hodgson
    Lee Hodgson Dec 03, 2008

    LOL the monitor sorry

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • CTX Master
  • 66,563 Answers

Contact expert ginko, he is in England like you, most experts are in the good old USA

Posted on Nov 28, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 395 Answers

Its going to cost you more to repair it then whats it worth, you can find a 17 lcd monitor now for under $175 as this would be the cheaper route still


Posted on Nov 28, 2008

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,i have lg5000 42" when


Either one of the inverter boards has a failing capacitor on it, or the FL (backlight) tube is burning out.
in your case, the most likely suspect is the tube.
The easiest way to find out if it's the tube or the inverter board, is to plug each of the tubes into the others inverter. This isn;t possible on all models because of wire length, but in most cases it can be done.
If you have the same problem on the same side, it's the tube
If the problem moves to the other side, it's the inverter.

You can either look for failed caps on the inverter, or just replace the inverter - the former being much less expensive if it's just a capacitor or 2.

If it's the inverter, here's a video that might help you out in determining what capacitors have gone and how to replace them.

http://www.youtube.com/watch?v=Mm51C_RDIZE (this is part 1/2)
http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related (part 2/2)

IF it's the backlight you'll have to get the make and model of the LCD panel itself, and then go to somewhere like www.lcdpanels.com to order the backlight (or the entire panel if you don't think you can replace the backlight without damaging the panel).

Mar 25, 2011 | LG 42LG50 42 in. LCD HDTV

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

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

2 Answers

My computer screen went black and when i try to start it back up it goes to a fadish red tinted looking screen and then goes back out. It is a toshiba satalite A 105 S4094 system unit. Please reply


It's probably the inverter circuit that's gone bad, and isn't lighting up the backlight now. It's also possible the backlight itself is bad, but the inverter is a more common problem. It's also much easier to replace.

Replacing the inverter is something you can do yourself if you're careful and patient. Replacement inverters and how-to procedures are available online. Search using the model number of the computer, not the system unit part number.

If you're not comfortable trying a repair on your own, take this to a computer service shop. If it is the inverter, repair will probably cost around $100.

Hope this helps. Thanks for using Fixya!

Feb 18, 2010 | Computers & Internet

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

Dark screen


Sounds like it is the backlight that has gone. New screens are a lot more reasonable cost option now and they tend to have the backlight incorporated into them. Replacing a backlight is not a simple procedure by any means. If you're not sure about changing components yourself then take it to a repair shop.

Jun 09, 2009 | Packard Bell (030069) Sound Card

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

Lcd tv turns off after 5 mins, leave 2 mins comes on to stand by


Swollen ( bad ) caps in power supply first place to look.............T.

Dec 17, 2008 | Samsung DLP HL-P5663W 56" TV

1 Answer

Ctx model PV720A


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!

Sep 01, 2008 | CTX PV 720 17" LCD Monitor

Not finding what you are looking for?
CTX PV 720 17" LCD Monitor Logo

Related Topics:

85 people viewed this question

Ask a Question

Usually answered in minutes!

Top CTX Computers & Internet Experts

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1640 Answers

yadayada
yadayada

Level 3 Expert

66563 Answers

Havn Fun Here
Havn Fun Here

Level 2 Expert

57 Answers

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

Answer questions

Manuals & User Guides

Loading...