Question about ViewSonic VX924 19" LCD Monitor

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Viewsonic vx924 LCD burnt transformer - T1

My friend had a VX924 that was turn off after it was turned on. The output was just fine, but would go away for some reason. You could turn off the monitor and turn it back on and you could see output for about .5 sec. I did notice that after booting up you could see the desktop very very faintly. I decided to take a look at the power board so I opened up and found that T1, which is some 10 pin through hole part with EPC 19 on it, has been burnt up on some of the coils. I guess it's the CCFL transformers...Does anyone know where I can find a replacement part for this transformer. I can't find a schematic, layout, anything for this board. Anyone know where I can find a data sheet for this transformer, or the part number, or any information on the details.


I think viewsonic used the same or very similar power board for the VX710, 910, 912, and 922.

Posted by rperky on


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I did find a source for ccfl inverter transformers.The site is

Posted on Dec 29, 2007


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Follow the directions and good luck!

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If youcan take a picture or two of the boards in your system as close and clear as you can and go to our web page and email them to me I will check and see if we can help you find the problem.

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Remove the four screw (one in each corner) and then using a fine wide flat blade you need to prise open the case at each side mid-point. The case is clippe together with plastic lugs that retains the rear cover. I started on the right side side and clipped it free, then the top, and finally the left side and it all come away easy then. They are very tight to remove the first tiem your do it.

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Help in identifying this transistor for my VX924

Are they black with 3 SMD pads? They should have a tiny tiny number on the top corresponding to a SMD code that will tell you what they are (example: D9A means 5.5V zener diode).

You should be able to just get a new inverter or repurpose an inverter out of something else to get it working again. An inverter that powers any other CCFL bulb should work fine.

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