Question about Mitsubishi WS-55809 55" Rear Projection Television

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Stk392-110 chip is in my tv. can I use stk392-150 instead?

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The model number you indicated: WS-55809 does not use the STK-392-110--IT USES TWO STK-392-570 CHIPS.

IF WHATEVER SET YOU HAVE USES A STK-392-110 YOU CAN USE THE STK-392-150 TO REPLACE IT--it is a higher current device than the 110 chip---there are some others even stouter but some create more problems.

I have used the 150 chip on several sets for the 110.


If this information helps you rate this solution as I do this here for FREE.

SD TECH.

Posted on Nov 15, 2009

Testimonial: "That was very helpful info.Will use chips. couldnt make up my mind if safe to use. Thanks a million. "

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Posted on Jan 02, 2017

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SOURCE: stk392-110 chip replacement

stk392-110/150/180 all have same fit, form function except the 150's and 180's are basically upgrades for they're more stable (more heat tolerant than the original 110's); I'd buy the 150/180 myself; you can get the stk392-180 for just under 10 bucks on eletronix.com.

Posted on Apr 20, 2008

  • 1 Answer

SOURCE: Hitachi 51G500A Convergence Problem

I have no experience at tv repair but I solved this problem and you can too. I bought 2 stk 392-150 chips made by sanyo on ebay for $30. I bought a low life jewelers loupe which is a sort of cap with different lens pieces out on the end of the bill for $10 on ebay. I bought a soldering iron and the smallest diameter silver solder and a little suction bulb and heat sink grease from radio shack for $20.

Take the back off tv. Locate circuit board with ics. remove screws that hold board . there are several wire bridges, snap these apart also. number connections with marker, undo connections. you will note that this board is connected to 3 crts by cable, do not disconnect this cable! This board must remain connected to crts by this cable! (so much for tv repair.com telling you how easy you can remove the board and solder it in your workshop) this board must remain connected to the crts, you can flip the board upside
down but all work must be done at back of tv

undo screws on ics. pry ics loose from heatsink. put on jewlwers loupe then turn board over and heat up each ic pin then **** molten solder into suction bulb. each ic has 19 pins. remove old ruined ics ( shame on Hitachi) my tv was only 3 years old! Put gob of heatsink grease on new ic, spread with razor blade, not to thick or thin, stick new ic thru holes in board and screw to heatsink . solder all pins to circuit board. look at the resistors that are close to the ics. if one is burned black it will have to be replaced, they act as circuit breakers and will burn out to protect other parts of the tv. usually the resistors are fine it was just the cheapshit hitachi ics that were bad.

Put everything back together and turn on tv for 20 min. after 20 min do the magic focus. your tv should focus up and be good as new. I have fixed several hitachi 51g500a in this way. Good luck!



Posted on Sep 21, 2009

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http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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