Question about HP L1530 (Carbonite, Silver) 15" LCD Monitor

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Hp l1530 lcd flat pannel monitor displays but the images are too faint almost dark. what could be the solution to this

When turned ''ON'' at first display the images appear bright (OK) but after few seconds the whole screen tuns dim but when i look at it more closely, the pictures are actually there, but only dim

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Posted on Jan 02, 2017

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SOURCE: Hp L1955 LCD monitor

Check the capacitors on the power supply if any on the secondary side are bulged replace them all with low ESR substitutes. Panasonic FC work well.

Also check the transistors around the inverter output transformers there are two on each side. Check them with the diode function of your DMM if any measure shorted replace both in the pair. You can find these on e-bay.

That is a power board / inverter assembly getting it would be extremely hard not to mention expensive.

Posted on Nov 23, 2007

SOURCE: HP vs19e flat panel monitor died

power supplybdown

Posted on Apr 04, 2008

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SOURCE: Screen So Bright I Can Barely See Anything...

The auto dimming circuit on the ccfl inverter is out.  Replace the inverter and it should cure your problem.  Seek adult supervision for this repair. Do not try it by yourself.
srich

Posted on May 27, 2008

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SOURCE: Auto Adjustment keeps turning on every few seconds

I have had the same problem and now suspect that cleaning fluid from when I cleaned the screen may have seeped in. After a number of things I did over a period of 2 weeks the problem went away completely.

1. You may be able, if that is your problem, solve it quicker with a hair dryer at a distance (no melt down!)
2. Run HP diagnostics and clean the registry
3. Re- install drivers

Like I said I think 1 is the most likely. I went from every couple of seconds to completely solved.

Another possibility is that an MS update may have caused the problem and then another solved it.

Posted on Jan 11, 2009

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SOURCE: blank HP w1907

If the power light does not turn color and stay's green on startup, it is not a power problem. It is most likely the inverter. If the unit is in warranty, send it out ASAP. Contact HP customer care by email and have the issue logged in.
If in warranty, they will send you a box by FedX second day and have repaired.
This is a 19" monitor and will not be worth paying for repairs if not in warranty.

Posted on Sep 03, 2009

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My monitor turns then goes dark after short time if i tun it off and again turn it on it show then go dark again.


I suppose it COULD be the VGA cable. However, if that cable worked when you plugged in the other monitor then it is extremely unlikely that this is the cause.

It sounds like the backlight within the LCD is about to die. I have encountered a few which did the same thing as you explain... The LCD seems fine for a minute and then goes black or displays very faint, dark text and images.

Sadly if your LCD is four years old it is probably out of warranty coverage.

If you have plugged in a different monitor than the one giving you problems and everything is fine, then that tells you that there is something wrong with the monitor. I personally think it has hardware failure. Sorry friend, my suggestion is to purchase another as repair would cost you more than the hardware is worth. I never like to recommend spending money but I think it's your only option in this case. You have ruled everything else out and it looks like the LCD is your issue.

Please let me know if you have any further questions or if you would like me to clarify anything.

Good luck! thumbsup.gif

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1 Answer

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If the laptop acts as it would start and there's just no image, look at the LCD screen very closely and check if you can see a faint image on the screen. It's possible that the LCD lid close switch stuck in the "closed" position and the back-light stays off even when you open the LCD screen or turn on the laptop. The switch turns off the back-light when you close the LCD display to save the laptop battery power.

If that didn't fix it then there are 3 things that could have gone wrong:

1. Video cable connection from inverter to LCD got loose. To check this, follow instructions from step 3 on how to open the LCD and check if cable is fitted properly.

2. The video inverter is faulty
The screen inverter failure is very similar to the back-light lamp failure. In both cases the screen gets very dark and the image on the screen becomes very faint, barely visible under a bright light. If it's still under warranty, take it for a replacement. You can replace this otherwise - you can find the inverter under the screen, follow the procedure described at point 3 to open up the screen.

3. The LCD monitor is faulty
If it works on an external monitor most likely the LCD is faulty and needs replacement. If it's still under warranty, take it for a replacement. If not, you can do it yourself, it's pretty easy. Remove the rubber covers on the side of the screen, unscrew the screws take the plastic cover off, disconnect the video inverter and put in the new LCD after you connect the video inverter to it.

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the inverter or the lcd bulb may be out. inverters are cheap, bulbs are not. is the screen dark like its off or glowing black? if its dark like the bulb is off, next, look closely and see if you can make out a faint image on the dark screen, if so, it is likely the inverter.

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1 Answer

The screen is very dark; changing the "brightness" setting on the monitor's menu doesn't seem to make any difference. Have I messed up a setting somewhere in Windows XP? Or is it time to buy a new...


If you can make out a faint image then the fault is a backlight problem.
The fault could be an inverter board or the CCFL lamp/s
For service, parts and DIY info check out LCD Parts - click on this link to their WEB site : -
www.lcdparts.net

Oct 19, 2009 | HP Pavilion F50 17" Flat Panel LCD Monitor

1 Answer

Dark LCD screen. Very faint image.


Internally it has a inverter board which go bad sometimes or due to heat sometimes get unpluged.So you will have to open it make sure when you do there is no power going to it.Look at the wires make sure they are snug and try again.
good Luck

Oct 04, 2009 | ViewSonic VA720 17" LCD Flat Panel Monitor

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Send the monitor. It's a power supply problem. My 15.4" LCD has the problem, too, whenever I move the monitor down, it powers off, and the menu disappears as well, but I'm going to fix the screen.

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Connect the lcd to another computer to verify the problem is the display. I have seen a bad video card cause this problem.

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it sounds like a blown cap.. you can replace it if you know how to soder

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When the screen goes dark shine a flashlight in the lower right hand corner where the Start button typically is located. If you can see faint images then you have a backlight problem. If you don't see anything then try connecting a spare monitor in its place. If that works then you have some other type of problem involving your LCD monitor. In both cases unless you have the experience and tools to safely work on fairly delicate electronics this is not a repair job for the typical consumer.

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