20 Most Recent Envision G218A1 22 inch Monitors Questions & Answers

john_paul57, Yes it happens that way! Must be that dam "switch-mode-power-supply and or cold-cathode-fluorescent-lamp electronic ballast circuit called an INVERTER circuit. TOO bad. Atech will need to evaluate and make repairs to light -up your fluorescents again. Here are some points that may be of interest FYI Goto YOUTUBE and view some video clips (8-12min ones are the most informative) of "LCD monitor disassembly" and "LCD repair". After viewing info about BAD capacitors or failed electrolytic filter capacitors, and other things that relate to WHY LCD monitors have BLACK screens, and SMPS's that are in constant SHUTDOWN mode trying to save themselves from a total catastrophic nonrecoverable failure. (smoke,fire) Sometimes you can tell if the SMPS is in full or partial shutdown mode by shining a bright flashlight 1" from the BLACK screen and if you see the Icons on the WIN-desktop it is only in partial SHUTDOWN. Yes, lots of TECH types visit second hand resale shops and buy up all the BLACK screen monitors for $5, put $6-$8 worth of caps in and resell them for $50-$75!!
Well I've told you enough to get both of us in trouble now! Get back to me if this was of interest to you and would like to attempt a repair or you need more options as to having the unit repaired. I'm louie12fix on fixya, BYE for now. If this info was any help please rate this response on fixya.

Hello,

The blinking blue light indicates your power supply has blown out. The heat buildup in the case has caused parts called capacitors to blow and short the power supply causing the blinking. We offer a repair service for $30 plus return shipping. If you wan to do the repair yourself you will need to open the back of the monitor and look for the bulging capacitors. To see what the bad capacitors look like go to our site at: www.ccl-la.com Replace any bulging caps that you see and you should be back going. You will need to use high temp capacitors marked 105c. If you have any questions about the repair or repair service just let us know at the address below.

I hope this helps, If so please rate our solution.

Buddy
Corporate Computer
www.ccl-la.com
[email protected]

www.aocdisplay.com/envision/manuals/G218A1.pdf
http://www.eserviceinfo.com/equipment_mfg/AOC,+Envision_3.html
Above top, is your user manual, below is your service manual.
Have a look below. it is a training manual, it will help in understanding and troubleshooting.. Just Google training manual..
www.scribd.com/doc/.../Sanyo-TV-LCD-Training-Manual
I applaud you for wanting to have a go, but you must make sure that you are starting in the right place, That is The Power Supply, as, if, that isn't right nothing else can be. But you simply cannot do anything without a Service Manual. In this it has everything one needs to repair the set. OK if it is shutting down, after that amount of time, of working and then faulting, then it is most definitely a "Thermal" problem, the way we "Find" problems such as this is "Freeze Spray" you use this on each component that is suspected of being the "Culprit" and you will soon,find that errant component. Now also not every fault is a Capacitor, I see many, many people that think, that Capacitors are always the "Culprit" now while that may be true in a few cases, a faulty Electrolytic Cap, or ordinary, Cap goes faulty, this is only a SYMPTOM, something has damaged those caps causing them to "Fail". One MUST always find the root "Cause", otherwise if you just treat, the SYMPTOM, the "Cause" will just make the "Symptom" come back, in short order, as the prime cause still, hasn't been fixed., Now Capacitors hate AC ripple, or Over Voltage. That's it. Oh.. and Heat, if these Capacitors, are too close to a Heat Source, then that's a prime cause of failure. Resistors, hardly ever go faulty, and if they do, it is generally obvious. However it doesn't hurt to check values with our Multimeter. Remember though resistors are made, with up to 20% tolerance from stated value, as such, are not too critical, unless in Timing circuits etc. Always check, the Values, of resistors, as with any other component, with the power OFF. Now Diodes especially "Zener Diode", are another thing to check, those and ordinary "Signal Diode" should always be suspect. next we have Transistors and IC's. The Transistors MUST ALL be checked to see if they have a good, "Junction" this is done, with our meter set to "Diode Test" and usually are about 0.6 to 0.7. With IC's you must check, voltage levels, or Logic Levels, going in and out, have a look at the circuit diagram, and it will tell you what they should be. It is a good idea to always measure the Power Supply voltages, see if a "Rail" is Low, that will be because some component has gone somewhat or all short circuit, to Earth, now, if the "Rail" is Higher, suspect an "Open Circuit" component, like a Diode, or Transistor. The voltages expressed in the manual are spot on, ANY variation MUST be investigated. I have been doing all this for over 30 years now, and I do indeed wish, we could have a set of "Symptoms" and be able to say.. "Oh that's the so-in-so and replace this" however unfortunately this although does happen, most "Symptoms" can have literally tens, of "Causes" all often "Interlinked" One simply has to do a methodical troubleshooting procedure, and always think, "are my Voltages Correct" as this is how, you Fix the problem, by making them so. Keep up the good work. If that link above doesn't furnish, a Service manual, it is imperative you get one, even if you must pay for it. It will pay for itself in about 2 mins.
The Tools you will need are A SERVICE MANUAL a Good Multimeter, a Signal generator, a Signal Tracer, pref an Oscilloscope, Soldering Iron, De-soldering iron, Probably, too, A SMT Hot Air desolderer (for the Surface Mount IC's), Compressed Air, An Anti-Static Wrist Strap, (MOST IMPORTANT, to prevent ESD), Cutters, Screwdrivers, sometimes, Torx, drivers too. Tweezers, are real handy, a magnifying glass, or eyepiece, a good strong white Light. OH, and you MUST have the original remote control too, (Sometimes one must obtain, purchase, a special "Servicing remote") as one needs this to "Program" the Computer in the TV, after, and during servicing, and to be able to put the TV, into "Service Mode" too.

it is my professional opinion though that everyone should take their units to their manufacturers approved service center, contacting a head office, of your unit & getting an approved service center is just SO important, even worth the extra to ship it, you see, at those places, the Engineers, are trained on the equipment you have, they usually have parts on hand, and do the job quicker. Anyway do that and get a "Quote". This way, at least, you'll know weather to repair or replace.

Press windows key + r key and type control panel and press enter Or click start windows button then type control panel under the search program of files then press enter. Once your in control panel look for the display icon and click it, and on the left pane of the screen you can see there is a calibrate color click it. Simply click next button, click next button again, click next button again, click next button again, click next button again, click next button again, click next button again, click next button again, click next button again, now slide the red, blue and green color to the max settings. Then click finish button, after it will prompt your screen about clear type tuner, still just click next, next button to finish. Have a great day.

Follow this link and download your drivers . http://www.aocdisplay.com/envision/drivers/Envision_WebCam.exe