Arcade Collecting > Merit/JVL Touchscreen

Megatouch Aurora Monitor Problem

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Karetaker:
I am having a problem with a Megatouch Aurora 19" TFT LCD monitor. It is very strange. When I power it up the monitor will come up. Then while it is booting it will go blank. If I unplug power to the monitor and then plug it back in the monitor will come up and stay up. I had some extra new monitor power cables here so I tried a new cable. The same thing happened with the new cable. I checked the 12v supply and it is solid. I even tried powering the monitor with a different power supply and the same thing still happened. Yet when I remove power from the monitor and plug it back it the thing will work. This is the second monitor I had in it and both are doing the same thing. Although both are used monitors. Any help greatly appreciated.

mahkeymike:
Sounds like faulty vga cable.

lilshawn:
I'd say it sounds to me like the backlight inverter is on it's way out.

turn it on and after it blips off...wait a bit until the game boots and shine a bright light into the panel...you should be able to very faintly see the graphics. this means the panel is going...but the backlight is off. if you see nothing you have a decoder board problem. (likely capacitors)

quite often when they start to go, they will take a few tries to get up and running...then often stay running. other times, they will blip up for a second and then shut off.

I've literally swapped out 30 or 40 of these now. it's like their lifetime is up right now.

pull out the old inverter and it should have a number on it you can enter (like DP-04-17019) to ebay and find a new one. (sorry I don't have an exact listing.) I normally just swap them out for a bigger beefy universal type inverter...but the aurora cabinet where the monitor sits is SUPER tight, so you'll need to find an exact sizable replacement or you'll have issues closing the monitor cabinet halves.

they can be had for about 20 bucks.

alternatively you can swap the CCFL tubes for LED. it's a bit of a bear to do, but the results are pretty good. I buy these kits for under 20 as well. I normally only do an LED conversion if the CCFL has broken or is damaged by a failed inverter. the buck driver is super small so it goes anywhere.

http://www.ebay.ca/itm/425mm-LED-Backlight-Strip-Kit-Update-19-19-inch-Wide-CCFL-LCD-Screen-to-LED-/281750790742?hash=item4199a7e256:g:yiwAAOSwMmBVp3UX

if you go this route, use caution. you can damage the panel as the glass is VERY thin (about 1mm).

mahkeymike:
shawn he said its his second monitor and its doing the same thing.

lilshawn:
I wouldn't doubt the inverter being bad in both of them especially if the replacement he got was used. who knows how many hours are on it. I've literally replaced all of our machines inverters and a pile from another vendor who brings us units to fix because their tech left.

don't get me started on the 100 or so touchtunes 19" monitors they've brought with backlight inverter issues.

come to think of it... i think the whole 19" monitor era is full of just bad caps/bad inverter design....bad power supply design. I don't really see this conglomeration of issues in 15 and 17 inch monitors. I keep one spare 15 and one spare 17 inch LCD. I have probably 15 extra 19's on hand. it's just a bad time for manufacturers.

in any case... if he does the "light test", that should clear things up anyway. if the panel is going it's the backlight...if it isn't it an analog decoder issue. if it was cable or input the monitor would say no signal.

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