Question about Elo Computers & Internet
First of all do the flash light test. If you can see dim picture, your monitor's Backlight Inverter board is faulty.
Posted on Feb 06, 2018
Disconnect all cables - press and hold the power button for about 5 seconds connect all cables back then turn on the power.
Posted on Oct 21, 2013
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Posted on Jan 02, 2017
having the same exact problem...it started with the green led power light flickering and it would take a long time to come up and then it got progressively worse...now the led light flickers red, yellow, green and the screen displays white lines randomly as the led light flickers...seriously doubt that the monitor is repairable....paid $500+ bucks for this sucker and have only had it for 1.5 years...have 3 CRT monitors that only cost $100 bucks from the mid 90's that are all still running strong (none are ViewSonic monitors), so needless to say we are very very disappointed in the QUALITY of ViewSonic Products. Our Company Will Avoid ViewSonic Porducts at all Costs in the Future!
Posted on Jan 03, 2008
SOURCE: veiwsonic 924x
This is a generic symptom that could happen to any LCD
The following is a generic answer applicable to most.
The most possible causes are bad capacitors or a bad semi-conductor.
Open the unit and check to see if any of the capacitors in the power supply or other boards look domed or vented on the top.
Replace any capacitors accordingly. Use the same value capacitors. Most often, 1000uF 16V or 25V, 470uF at 16 or 25V, 220uF at 16V or 25V.
If this doesn’t solve the problem, try checking the surface-mount transistors on the inverter board that run the lights. Some times these transistors go bad and can cause the power to cycle up and down. Check the area for any cracked or overheated ceramic or mylar capacitors.
Don’t forget to check for caps on the main board. Some times these boards are overly simple and only have a couple of caps, but other times they are teaming with them.
Posted on Feb 14, 2008
When LCD's "turn on" momentarily before going blank again it is an indication that the backlights have worn out. Cold Cathode Floursecent Lamps (CCFL's) have a limited amount of hours which they can be in operation for before the mercury vapor in them breaks down (or leaks out). When that happens the backlights no longer look like a load the inverter (device inside the monitor which turns low voltage into high voltage) is programmed to look for, and long story short, the inverter does not keep the lamps illuminated because of this being a safety setting, if the load no longer looks like what the inverter is looking for, it could be sustaining an open arc which then leads to extremely high temperatures, and a possible fire. The flash you see is the "firing voltage" (I think that is what it is referred to in the industry) which is a very high voltage pulse used to create the arc between cathodes in the CCFL, creating the arc takes a much higher voltage than sustaining the arc, so even if the inverter successfully creates the arc and lights the cathodes, it quickly doesn't look like a proper load and then inverter quickly turns off to prevent damage.
In essence CCFL's are usually the weakest link in LCD monitors as far as what is most prone to failure, technology has been improving, but if you keep your monitor on all day long at full brightness, never shutting it down, don't expect more than 3 years out of it :( Some brilliant LCD manufacturers recognize this problem and even make the backlights replaceable!! What a novel concept!!! But due to price gouging, the replacement backlights are usually sold for a premium from resellers, better option than the majority of LCD displays which have the backlights so integrated that you end up destroying the LCD and introducing contaminates in the process of "reviving" the display...
Your best bet if the backlights are in fact shot, is, if you are handy with a soldering iron, get the LCD apart, get out the backlights (there are probably four in there, possibly 6) measure the diameter and length, and look on eBay to see if someone is selling the particular CCFL you need-- that may be the cheapest route if you are out of warranty...
Posted on Jul 25, 2009
The problem on your monitor is a bad power supply. Because of heat buildup in LCD monitors parts called capacitors overheat and blow out. You can go to our web site at:
www.ccl-la.com/badcaps.htm and see what to look for. If you open your monitor and see blown capacitors that look like the pictures on our site then replace the bad ones and you should be back going. Email me if you have additional questions or if you need to get the capacitors, we carry them in stock.
I hope this helps, if so please rate my solution.
Posted on Aug 27, 2009
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