Hi, thank you for waiting. These TVs will
operate over a fairly wide voltage range, but it is not likely the picture would dim if the AC voltage was low. Instead the TV would just fail to come on at all. You are most likely dealing with two separate problems, though...
First, the problem with the green screen and
the TV shutting off is most likely caused by a "confused" Main PC board in the TV. This is a rather common problem in this series of Mitsubishi XXXXX recently released a software update to correct most of the problems with these boards (85% according to Mitsubishi). So far, though, the software update has been very
successful, especially with the symptoms your TV has.
The software update is available online at the link below. Click on "Software Updates" and enter your information:
You would need a USB flash drive to download the software and install it into your TV. Mitsubishi Consumer Relations will provide step by step directions or they will have it installed for you, if needed.
If you are unable to (or just don’t want to) install the software for any reason, or it doesn't correct the problem, please contact Mitsubishi XXXXX to have this problem corrected (at no charge to you). Their number is: 1-800-332-2119
The dark picture is most likely caused by a failing lamp in the TV. It sounds like the TV has been played quite a bit, and usually 1-1/2 - 2 years is “average” for one of these lamps in normal use. If you continue to use it as is, the lamp will probably eventually shatter.
The Mitsubishi lamp assembly (recommended) for your TV is part number 915B403001 and it is available for $99.00. Hopefully(?) this lamp is in stock at your local dealer, or it can be ordered by calling(NNN) NNN-NNNNor at this website:
Please be cautious if ordering a less expensive "aftermarket" lamp (or bulb) found online: some of these can be a gamble about how long it will last. The original lamp assemblies are held to closer tolerances and are selected to match the ballast in this particular model TV. The aftermarket lamps will work in a wider variety of TVs; but because of this, they may not be within the specified tolerance of this particular set, so they may not last as long. You may not know whether the cheaper lamp was a good choice or not until several months from now.
Below is a drawing showing the location of the lamp on your TV. Replacing the lamp is very easy... all you will need is a Philips
screwdriver. There will also be instructions inside the box with the new lamp, but please let me know if I can help.
If I may make a suggestion... if you call to have the software upgraded, you might mention you also need a new lamp. This way the on-site servicer can bring and replace the lamp while loading the software. I would hope he or she would not charge any labor for this, because Mitsubishi is paying the servicer to upgrade the software anyway. Plus, it only takes a couple of minutes if the servicer has access to the back panel.
If I can be of further help by offering more information about this, please let me know. Remember to click "Accept," and please remember also: you can still return to this page for more information at a later time.