Re: Black line down right side of the monitor (Acer...
I have a toshiba laptop and my two year old son has just pressed all the buttons when i was out the room and i now have one inch black margins on either side of my screen that i just cannot get rid of......any ideas would be much appreciated!!!!!!
Re: Black line down right side of the monitor (Acer...
Just a solution that might clear this up for some. I have an IOGEAR GCS1204 and encountered the offset screen issue when switching and found that setting each system to a different refresh rate fixed this.
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The switch may be the problem but it also may be the monitors internal power supply. To check you can open the case by the little switch and remove the plunger ( the little pin that moves up and down) If you get a picture back then the switch is the problem and you will have to bend the flat spring up to give it a little more movement. I would be if the monitor is about 2-3 years old that the problem is in the power supply board. After a few years many LCD monitors have issues with the power boards blowing capacitors. It happens on desktop monitors and rack mount units too. If you have an external power adapter for the monitor check the voltage output and replace if it is not steady. If the power supply is internal to the monitor then you will need to open the case and check the capacitors for heat damage. Check our site at: www.ccl-la.com/badcaps.htm for pictures of what to look for. Replace any that look like the pictures and you should be back going again. The values that you will need are going to be marked on the sides of the bad caps. Be sure to use a high temp replacement or the problem will be back in a month or two. If yo don't want to do the repair yourself we do offer a repair service of the monitor for $40 plus return shipping. If you have any questions just let me know.
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In order to fully answer your question, a number of needful things must be inspected, reinstalled, confirmed, & tested:
Reset. Try the reset button. You could use a paper clip to reach the reset button through the pin hole in the lower front left of the Zonet KVM unit.
Inspect connectors. Each data/input/power connector/port requires all of its pins to be present & straight for full functionality.
Inspect the entire length of each cable & cord to ensure that each has no damaged area.
Seat each connector in the appropriate port of a computer that will be accessed via the KVM unit.
Electricity. Inspect all affected devices & confirm that each has sufficient, uninterrupted electricity.
It is possible for a Zonet KVM unit to display channel lights without direct power to the unit, but you should confirm that the unit is getting sufficient, uninterrupted electricity-directly through its own power cord. Unplug the KVM power cord & every connector & reseat each one (this performs a power reset on the KVM unit)-making sure that each connector is in the correct location (not just where it originally was). Thus, make sure that the keyboard, video display (monitor), & mouse are on the output side.
Press the power button on your monitor. If it does not turn off the monitor's power status light (Off/On/Standby), then remove the power cord from the monitor & reseat it-to reset the monitor's hardware. If it does not turn on the monitor's power status light, then the monitor is either not getting enough electricity or it has a malfunction which requires troubleshooting & fixing (possibly through a fixya.com thread for that monitor model).
Unlike USB devices, PS/2 devices usually require device connection prior to turning on that device. With that said, connect the keyboard & mouse KVM channel cable connectors to the computers & then turn on those computers that you intend to display through the KVM-connected monitor & then turn on these computers.
Any computer that does not turn on has an issue that requires resolving (just like a monitor that would not turn on).
Sometimes a keyboard/mouse interface issue can be resolved by replacing that interface device.
The KVM Unit. When all else properly connects & performs, what does not properly connect & perform has the issue &, hopefully, that can be repaired without having to replace it.
Check the KVM switch and make sure that the cords are not frayed or the device did not overheat. Also make sure that the cords are all securely fastened into the approptiate plugs. (Sometimes - however inconvenient - it is useful to tape the plugs in securely as well as ***** in the monitor plugs with the small knobs on either side of the plug. If the cord is defective you may need to buy a new one. Some of the pins from the cord may be missing and they may be the ones responsible for the missing color (green). I also suggest, checking the monitor and KVM color settings (if presant) before doing anything else. Sometimes devices auto calibrate and mess themselves up instead of doing any good. I may have more solutions later, if these don't work. There may just be a problem with the kvm switch because according to what you wrote, it seems that nothing like this happened to yor monitor before, did it?