Mitsubishi model vs 4561 rear projection tv, has a very weak picture. the bright and contrast are adjusted to max. everything else works fine.sometimes the picture gets brighter for a while and then returns back to a very dark screen and i can just see those images that have alot of bright colors in them..Any help on replacement part or adjustments would be very apreciated.
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Straight from The Mits website Intro Year:
The Silver Series includes Mitsubishi's most cost-effective projection televisions, yet they outperform by wide margins many of the more expensive models of other manufacturers. With their superb picture, wide assortment of inputs and features, and highly capable system remote control, the Silver Series sets new standards for the entire industry. These exceptional performance features include the following: DIAMOND VISION Optical System 3D-Y/C Comb Filter: Delivers crisp color separations and smooth picture texture. Dynamic White Balance: Ensures color accuracy at all brightness levels. Three S-video Inputs: One in front and two on the rear panel, allowing quick and easy connection of a high-quality camcorder or video game, while simultaneously providing connections for home theater system components such as a digital satellite system and an S-VHS VCR. Component Video Input: Provides the best possible picture quality from a DVD player. 64-Point Digital Convergence Adjustment: Easy to use and provides precise color alignments. 2-Tuner Multi-PIP with Split Screen. 5-Layer Multibrand Remote Control: Allows the operation of a satellite or cable box, a VCR, a DVD player, and an AV receiver-all from one keypad. Intelligent Room Illumination Sensor (IRISþ): Automatically reduces brightness and contrast for a more pleasant viewing experience in a darkened room. Weight (approx.) - 178 lbs Power consumption - 240W
The TV does have a screen control on each of the picture tubes ( there are 3 ) although I do suggest you have a qualified technician make the necessary adjustments as an improper adjustment can cause damage to the set. Should you deside to make these adjustments yourself, you'll need to remove the back ( or front in some sets) ( PRE-CAUTION, UNPLUG THE SET FROM THE WALL BEFORE PREFORMING ANY ADJUSTMENTS INSIDE THE SET ) The screen adjustments are located either on the bottom of each tube or in a group component located where the main High Voltage Wire ( large red wire from the black transformer on the deflection board ) is connected to. Look for a turn pot ( screw type adjustment ) that is marked SCREEN. When you locate it ( whether it be on each tube or in the group component ) turn it up only slightly and not to much, as excessive gain ( turning it up to much ) may cause the TV to shut down. When you have the proper brightness ( when it looks good to you ) close the set up and enjoy the renewed picture. Good luck and I do hope this has helped in some way
Well, there is no lamp or simple part you can unplug and plug in. I have seen a couple of those sets with that symptom recently and it is caused by a faulty 9 volt regulator on the small signal board. This is not an easy part to change and the repair should absolutely be handled by a tech experienced in Mitsubishi projection sets.