Question about Hitachi 42EDT41 42 in. HD-Ready Plasma Television

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Hitachi Plasma - green dots

I found you have the same problem as I with the green dots dancing on the Hitachi tv. Were you able to fix your problem and if so was it expensive? I notice the answer that is posted on this site appears to be a quick and somewhat inexpensive solution. Just wondering if it worked for you.
Thanks for your help.
Tanya McKinney

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Please read all the info before you start and if you have any question please feel free to message me at pleasefixitdave@yahoo.com or just give me a call @ Cell # 1-503-432-9904 Ask for Dave! What you'll need to do is remove the stand and the back cover. Once you have both the back cover and stand off you'll need to put the stand back on the TV so that you will be able to set the TV up right! Then you will need to locate the Y sustain board. The Y sustain board is the board that is to the left side of the TV if you are looking at the TV from the back side. The Y sustain will have a large heat sink on it 3 1/4 inch's wide and 6 inch's long. There is a small heat sink 3/4's of an inch wide and 3 1/2 inch's long just above the large heat sink. A little to the right of the larger heat sink. The little heat sink also has two large capacitors just to the left of it. Once you have located the small heat sink you will want to look just to the right of it and you'll see two Blue with Yellow centers adjusters.Hitachi Plasma - green dots - b5e4dcb.jpg You do not want to touch any of the adjusters other then the two that has the location #'s VR1 & VR2 next to them. Please make sure you have located the right adjusters by making sure that the location # next to them is VR1 & VR2. Start with adjuster VR1. Before you make any ajustments take a felt tip pen and make a stright thin line over the top of the Blue with yellow center adjusters. This will help you put the adjuster back in to the factory setting position if you need to start over and it will also give you an ideal as to how much you have adjusted the adjuster. At this point you should have the TV with the back cover off and the TV in the up right position with the stand on the TV. Now you will need to find a friend to watch the screen while you make the adjustment to Location # VR1 & VR2. plug in the TV and turn it on. The TV should be cold, another words if you have had the TV on at all let the TV cool down for about an hour or so before you do the adjustment. Start the adjustment by turning VR1 counter clock wise slowly untill the specs on you screen go way. If the specs on you screen get worse then put the adjuster back in the factory set position and turn the adjuster VR1 clock wise until the specs go away or lessen. In some cases you will not be able to get ride of all the specs but you will be able to lessen the amount of Green or Red specs on the screen. If adjusting VR1 dose not completely clear all the Red or Green pixels from your screen make the same adjustments to VR2! WARNING: Plasma televisions use high voltages to display images on the screen. Be sure to unplug your unit, and then press the power button on the front panel to discharge the capacitors in the unit before beginning to open up the case. Always observe the necessary precautions when working around electrical equipment and never touch anything with your bare hands that may be carrying a stray voltage. By following these instructions you agree to assume all risks involved with the repair of your unit, and agree to hold me harmless of any damages that may result to either you or your television from the following of the instructions on this page. Please feel to message me or give me a call if you have any question regarding the repair of your TV! Thank you! 03.gif Dave All TV Repair Cell # 1-503-432-9904 pleasefixitdave@yahoo.com

Posted on Feb 23, 2009

  • Robb Aug 29, 2013

    Dave, you're awesome! I was following another post about getting rid of the green snow-like dots and hit a wall when I noticed there was not adjustment dial labeled VSCAN as the other post indicated. That's when I found this post, which is way more straight forward and actually covered my Hitachi 42EDT41. The VR1 knob was all I had to adjust. In my case, I turned it counter-clockwise - a tiny bit at a time - and it improved, but not completely. I, then, turned it back to the original position (where I had marked it) and it was perfect!

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