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Mitsubishi Wd-65833 wont turn on and makes sratching nosie
Fault with the main power supply regulator section. Either it will be on a separate board, or on the part of its main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
on Jul 18, 2015
I paid over 2500 dollars for the 65 833 diamond
There is only one thing that can cause this problem in DLPs. The DMD board aka Digital Mirroring Device. This is what causes the problem of dead pixels, due to malfunctioning nano mirrors. Replacing it should resolve the problem but the board costs about 400-500$. Would you like to replace it yourself?
on Jan 19, 2014
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