 Posted: Tue Feb 01, 2011 2:36 am Post subject: |
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Now you have me worried... Hopefully the problem you two are having with this particular brand / model is localized to your corner of the planet.  |
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| Posted: Tue Feb 01, 2011 12:46 am Post subject: Thanks for everything! |
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Thanks for your replies my friend. I really appreciate them. I'll just buy a new monitor soon, but this time, maybe Samsung. But I'll keep this one for future reference and experimentation. lol. And also, i just called my friend who also has the same monitor. Seems good news to me, because his also broke with the same problem. lol! hahahaha! I am not alone.  |
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| Posted: Sat Jan 29, 2011 9:42 am Post subject: Re: On Bulbs |
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This site may help (most are only examples - they may or may not apply to YOUR panel): http://www.lcdparts.net/howto/default.aspx |
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| Posted: Sat Jan 29, 2011 8:25 am Post subject: On Bulbs |
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By this, you mean the entire unit or only that specific bulb? So the IC will not allow only running three of the four CCFL bulbs? I checked some blogs/tutorials on how to change the CCFL bulbs but I think it's beyond my capability. Because I'm not sure with the availability of the CCFL bulbs that would be compatible with the LCD panel inside the monitor. If I do open the LCD panel, can i just remove the defective bulb and will the monitor still light up? |
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| Posted: Fri Jan 28, 2011 11:44 pm Post subject: |
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| An IC on the Power Supply / Inverter printed circuit board will sense that you only have three of the four CCFL bulbs (two ACROSS the Top & two ACROSS the Bottom) connected - unit will light up for 1-2 seconds and then go dark. Top right corner? Viewed from front, I presume. VGA controller board = Scaler board. Ribbon wire = LVDS cable four pairs of wire = High voltage drive from inverter portion of power supply/inverter board to 1 to EACH CCFL bulb. IF you DO decide to take the LCD panel apart, be careful. Work in as dust-free / static-free area as you can. The metal cover with part info sticker on it will need to be removed and the Panel driver board/TFT (GLASS substrate!) are connected together by thin ribbon cable jumpers that are very fragile and can be ripped or the tabs can become disconnected. If either occurs start playing "Taps." The good news is that if you treat it as if it were a book and each part is a page, as long as you keep "in"order" each part is "keyed" and can only "easily" go beck together one way. |
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| Posted: Fri Jan 28, 2011 2:03 pm Post subject: Follow up question. |
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| The VGA controller board is attached to the LCD panel by a ribbon wire and to the power supply board with a bundle of wires. The LCD panel is also attached to the power supply board with four pairs of wires. I believe these are the pairs of wires that power four of the backlights inside the LCD panel. I think these are the power connectors of the Innolux LCD panel since it connects directly to the power supply board. I also think that there are four backlight bulbs since there are four pairs of wires. Four of them could be located at each edge of the monitor's LCD panel. I believe one of them is the one that is producing the abnormal heat that is causing the monitor to overheat. Since the overheating area is near the top-right corner of the bezel I can immediately assume that it could be one of the 2 pairs of wires that come from the upper part of the bezel that should be carrying the power for the backlights in the area. So here's my proposed solution. Since one of the four backlights is probably cause of the overheating, it would be wise to just isolate it from the entire circuit and turn it off for good. I'm not an expert on how LCD panels are built, but i think, losing one of the four backlights wont hurt or will it? |
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| Posted: Fri Jan 28, 2011 10:56 am Post subject: |
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| Other than the one spot on the Power Supply/Inverter board I don't see any visual evidence of anything overheating. Somebody might want to resize those pictures, I think I can see some naked atoms. |
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| Posted: Fri Jan 28, 2011 9:45 am Post subject: More and More Pictures |
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| Posted: Fri Jan 28, 2011 9:43 am Post subject: More Pictures |
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| Posted: Fri Jan 28, 2011 9:40 am Post subject: Pictures |
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Too bad i forget to take pictures of the locations of the hooks. It could help people who want to open up the same model of monitor. But i did take pictures the only caveat is that they're taken with Nokia N70 at low res. Here are some of them:     |
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