Question about Mag Innovision LT782S 17" Flat Panel LCD Monitor
My 17" flat panel monitor died for no apparent reason. It won't turn on. I've tried plugging it into different outlets, but there is no sign of life...no lights on the display or anything. It was originally plugged into my surge protector. Do you know what could be wrong with it??? Is it an electrical problem? What should I do?
I'd appreciate any help. Thanks.
I had the same problem i bought two of those exact same monitors, and both died at the same time because the were in the same room, the temperture in the room was to hot and the monitors stayed on all day also very humid it was a small secluded room,the solution is a bit simple if you are up for the work. if your not tech savvy then maybe you can take to to someone and ask them to repair it for you the problem is that the capicitors on the powersupply board erupt bad capacitors due to the heat or most likely the humidity so all you need to do is replace the capcitors which cost about 55 cents you can buy it here https://www.electronix.com the exact one would be the 470 uf 125v capacitors there are about 6 of them on the board and not all of them died for me i only had to replace 3 and you should be good to go. you can email me if your in NYC and you want someone to do it for you my fee is $100 for my time
Posted on Feb 21, 2008
The first step is to check the fuse on the power supply board. Next, disconnect the inverter board to eliminate the possibility of it shorting down the main and or power boards. Be careful as the inverter board supplies high voltage to the cold cathode tubes (backlights) and it bites HARD. If you disconnect the inverter and the power led comes up then replace the inverter board. (The screen will appear blank because you have no backlighting). If the power indicator still fails to light you need to suspect the main board first before the powwer supply board. The main board tells the power supply board to come on. You need to check the trigger from the main board to the relays on the power supply board. Also check the power connector to the main board because you should see +12V and/or +5V on at least some of the pins. If no power on the relay triggers then replace logic board. Then replace Power supply board last. Or buy a new monitor!!
Posted on Jan 01, 2008
Make sure the power connector is plugged in tightly in the back of the monitor and also make sure it is getting a vide signal.
Posted on Nov 07, 2007
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Posted on Jan 02, 2017
SOURCE: My monitor won't turn on?
If there is no power at all then it is either the power cable or the power supply board inside the monitor.
The part must be tested before replacement.
Posted on May 21, 2009
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