20 Most Recent Mitsubishi WD-57833 57" HDTV Questions & Answers

try blowing out the set and especially the three fans and the area around them---seen a number of these where a dirty fan will slow down just a little and even stop set from coming on at all or shutting down sometimes.We usually roll them outside and with a aircompressor clean the set out, it usually looks like a dust storm.I have had more than a few brought in that would not power up and as soon as cleaned outside, came up and worked.The actual air intakes are on the front of the set and dust gets sucked into the unit.

The main power supply regulator section circuit fault. Either it will be a separate board, or the part of 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. Pull up older posts. http://electronicshelponline.blogspot.com/

You'll need to check all the connectors that you unplugged, make sure they are plugged in to the correct place, plugged in well and no pins bent over etc, Probably should also check any connectors that you did not have to unplug just to make sure they didn't get pulled while you were getting to the color wheel.

Those are called pixels depending on the manufacturer of the tv they may replace depending on age size and location of the dead pixels

I have A sony SXRD 50 inch tv and i am getting sound but no picture

I don't think that model has that but if it does it will be in the owner manual, what is the issue with the set.

Weird noise is high pitched or even grinding sound? Sounds like a fan but is not?

Some of these if they have a photo slot or card sd slot on front you can get a update card from Mitsubishi---with set off insert the card and turn set on---a good idea is to go into the menu and write down the software version currently in the set---Note: if no problems do not try this--do not update for the sake of just updating---seen some problems when this is done.

Check it out required light engine price.
Hope this will help you to decide about tv,
Thanks.

Since the buttons are fine it is definitely a problem with the main board(digital main). The problem is associated with logic control circuitry malfunction which is causing it to send commands to the microprocessor at will. The part is a large board, which is located near the board with all the inputs and has lots of ICs including the microprocessor. I have found a part but just make sure that the part number(934C265001) matches with the one in your set(the number will be printed on the board) before you order. It costs 357$ but they will return you 208$ if you ship them you faulty board, which works out to 148$
http://www.tvserviceparts.com/934C265001.html

Please replace lamp in tv to solve the problem, original lamp is available in MitsubishiParts.com
Thanks.

optical engine failure. that technology is called DLP digital light processing and it uses a device called a DMD digital micomirror device that has millions of mirrors onthe face and they independtly move and sometimes they can get stuck or not move and cause spots black or white across the entire picture. i suggest calling customer support for possible repair accomodation the cost of the optical engine is around $1100.00+tax plus labor for professional installation part number - 938P075040 phone # for mitsubishi 1(800)332-2119 good luck

Actually it seems that the defective part on your TV is not the Bulb. It's going to be the ballast. This is the board in charge of sending all the energy to the lamp so it can light up. http://www.discount-merchant.com/SearchResults.asp?Search=mitsubishi+ballast/?Click=48427 It's no an expensive board, actually they're running between 60 and 80 dlls.

Sounds like something on the main board causing the lamp ro misfire.

Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. https://homenol.blogspot.com/ https://electronicshelponline.blogspot.com/ If blinks continue without any pause, or the LED light stationery; the main board is faulty. Search the site by type in the "brand name" to your device; [Exclude the model number], in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. See the site by a desktop. Mobile view has no search box. If you are viewing it by your mobile, see it in webview/