Question about KDS Visual Sensations 190 (White) 19 in.CRT Conventional Monitor
My KDS 19 inch monitor powers up but turns black in about 3 seconds. Every time I power it up the same thing happens. I left it unplugged overnight but that didn't help. Have hooked another monitor to the computer and all is well. This is still under warranty, should I just return it or is there something that can be done to resolve the problem.
If you have a digital stove then your digital board most likely is going bad.
Posted on Sep 27, 2017
Posted on Sep 27, 2017
So how long have you had it, and try to blow it out. Sometime they just need cleaning. If that don't work send it back before warranty run out
Posted on Sep 27, 2017
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Posted on Jan 02, 2017
My monitor does the same thing at times and sometimes shows "No Signal" and at other times the screen will maintain the images but the backgound color switches to mustard yellow. In each of these cases I have been able to solve the problem by unplugging the power cord from the electical outlet for about three seconds and plugging it back in. I have a KDS model 780 LCD.
Posted on Feb 16, 2009
SOURCE: kds 917s lcd monitor
Yup, that's correct. The capacitors are very cheaply made. I recommend replacing them all if applicable. Before replacing them you must allow the capacitors to discharge. You can just unplug the monitor for a few days. A manual way is possible. I will explain that in the lower portion of this post.
Remove the screws on the bottom edge on the screen. When the bezel screws are out place your fingers on the top edge on the bezel and press down towards the desk/table. The bezel should slide down and off almost like a PC side panel.
Remove the screws from the LCD pane and place masking tape around the edges of the LCD panel. These edges are crudely cut and are razor sharp.
Once taped pull the panel upward slowly. Note the three cables connecting the panel to the metal box behind it. These cables are the sync/video and CCFL cables. 5 connectors in total must be carefully removed with needle nose pliers.
Once the panel is removed, remove the screws from the metal box housing the power converter and LCD driver. Inside are two separate boards. They are connected on the edge via a small socket/pin connector. Remove the screws holding the power converter PCB. (The one that connects to the power plug port.) (I must stress the importance as stated before. DO NOT remove anything until you allow ample time for capacitor charge to deplete. Or have discharged them manually.) Using an analog (Needle meter not digital) Volt meter set it to 50V or close to. Place both prongs on the corresponding pole of the capacitor. (One capacitor at a time) You will see the voltage spike then slowly decline. Once the current is at zero move on to the other capacitors.
The bad capacitors will have brownish matter oozing out. Use your discretion to replace the faulty capacitors. I'd suggest replacing them all. Before removing them note their polarity and capacitance.
Posted on Mar 24, 2009
You have a monitor with a common problem. After a few years some LCD monitors will blow a power supply. The problem is caused by parts called capacitors overheating in the confined space of he monitor. If you are good at electronics repair/soldering you can usually fix he problem. Check out a few pictures on my web site www.ccl-la.com/badcaps.htmYou can take the back cover off your monitor and look for the bad parts,replace any that look like the pictues and your monitor should work fine. The capacitors do need to be installed with the correct + and -connections, note the stripe on the old one and insert the new one the same way. If you don't want to try the repair yourself we offer a repair service for $35 plus shipping. I hope this helps, if so please rate my solution.
Over 21 years of computer and printer support/repair
Posted on Jul 03, 2009
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