Question about Mitsubishi WT-42311 42" Rear Projection Television
When turned on green power light clicks on and then goes off and it won't stay on. WT-42311 model. This happened just after my wife used the DVR to record a program. The set is 6 years old. Any advice
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Posted on Jan 02, 2017
Your access should be a a panel near the back or side. You will see that it is somewhat easily removed and should have maybe one or two screws. You will see the casing to the lamp. Go ahead and remove it. Now unscrew the old bulb and replace it with a new one. There is not a lot of screws holding it together. It's a fairly easy process once you find the lamp. You should see the lamp once the panel is removed.
Posted on Apr 27, 2009
STKs,one of them controls startup if bad TV will not come on.STKs are big black ICs will have part# on them. call Mats for parts you have 2 replace both. 1-800-628-1118
Posted on Sep 18, 2009
2, then 2 is short protection. What it usually means in this model is one of the two STK-392-110 convergence chips has shorted and taken one of the 5 amp pico fuses out that protects the chips.
The set will detect no voltage to Convergence circuit and shut down instantly----It could be a short elsewhere but 95% of the time it is one of the convergence chips.
This model uses a light box---with the back removed and several screws removed and one large square plug on the left side(as you look from the back) unplugged-----everything comes out in one piece--the sides are plastic and actually have handholds to pull the box out once it is unbolted.
The question is can you do this? You will need to get the box out and check the pico fuses near the chips--they do not look like regular fuses but can be tested like testing any other fuse---If one or both are blown--you need to replace them and BOTH chips---you can get replacement chips for about 12 dollars for a pair on Ebay---I buy mine there.
Each chip has 18 pins and is black in color (about 2 1/2 inches wide by 1 1/2 inches tall with the STK number printed on them in White) and in this set they are located on metal heat sinks near the very front of the Chassis.
Let me know if you have questions or need help--IF YOU CANNOT DO THIS REPAIR LET ME Know and I will give you advice.
I am here to help people.
Posted on Oct 16, 2009
Testimonial: "Thank you for the advice. Very helpful."
2,2 IS short protection and 95% chance it means one of the two pico fuses that protect the convergence IC chips are bad.
This model uses two of the chips: STK-392-110 and you would have to pull the light box out to replace them safely (total parts cost will be under 30 dollars).
It involves getting at the chips and the fuses and replacing them: how much skill do you have?
Posted on Mar 25, 2010
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