20 Most Recent Hitachi 51SWX20B 51" Rear Projection Television Questions & Answers


sound like a common problem where the coolant for the tubes has become contaminated. It is possible to replace the coolant yourself and can be a much cheaper alternative to getting repair shop to fix.
do a search for replace coolant 51swx20b

Hitachi 51SWX20B... | Answered on Oct 21, 2013


sir do a power reseet ,turn off the tv then unplug it from the electrical source then wait for 1 minute then plug it in and turn it on if it doesn't work call sony customer serveice at 1800 222 7669

Hitachi 51SWX20B... | Answered on Oct 03, 2013


First place to begin is with back off this model has a series of mostly green L.E.D's on the boards that monitor and reflect voltages.

A single red led should be lit all the time--watch them when you try to turn the set on--does one or more go out before the others?

Hitachi 51SWX20B... | Answered on Jun 21, 2012


see previous answer to this--set will need the two STK-392-110 OR -150 CHIPS REPLACED.

Not open heart surgery and not that expensive parts wise.

SD TECH

Hitachi 51SWX20B... | Answered on Apr 25, 2012


The ticking noise is the high tension transformer arcing, it is not really a part that is worth while replacing.

Hitachi 51SWX20B... | Answered on Mar 13, 2012


Do adjustments on focus block. Will have to open front panel access door, focus block blue will be on left, green will be on top. Top screen bottom focus. Turn clockwise to increase, counter clockwise to decrease brightness. Turn the color all the way down on menu where it's pure black and white and make adjustments for perfect black and white picture, then when you adjust color, it will be perfect.

Hitachi 51SWX20B... | Answered on Nov 13, 2011


bad convergence ic's. STK392-110. I would suggest using STK392-120. Be sure and use a lot of heat sink compound.

Hitachi 51SWX20B... | Answered on Nov 13, 2011


You need to replace the STK ICs they are Big Black ICs will have part number on them ,
STK392-110 Mats has ICs 1-800-628-1118

Hitachi 51SWX20B... | Answered on Aug 06, 2011


If you bought a kit with instructions from sites like www.TvRepairKits.com go back to their site and email them for help. This may be a simple fix. If however you bought random parts over the net and did the install without any instructions it can be many things from fake parts from china, soldering, wrong resistors, etc. I

Hitachi 51SWX20B... | Answered on May 07, 2011


The problem you have mentioned is caused due to loss of high voltage that powers the CRTs . This usually caused due to a failed horizontal deflection circuit and/or HOT(horizontal output transistor). How good are your electronics/soldering skills?

Hitachi 51SWX20B... | Answered on Feb 05, 2011


Replace Both of the STK ICs ,they are big black ICs and will have PN# on them STK392-110
Check the resistors near STKs and make sure they are OK.
Mats Has STK ICs 9.95 each 1-800-628-1118 ask if they have convergence Kit for this model.

Hitachi 51SWX20B... | Answered on Jan 18, 2011


All projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg

Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

69189a5.pngSOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Hitachi 51SWX20B... | Answered on Jan 13, 2011


TAKE OFF THE FRONT PANEL AND FIND THE FOCAS ELECTRONIC FOCAS CONTROLS. USUALY BETWEEN THE LEFT SPEAKER AND THE FIRST CRT GUN. PAUSE A DVD WHEN THE CREDITS GOING. OR USE A MENU IN YOUR SAT RECEIVER TO LOOK AT. USEING THE GRID IN THE TV SOMTIMES IS NOT ACCURATE. YOU WILL SEE 6 SMALL KNOBS (RED,GREEN,BLUE)FOCUS AND(RED,GREEN,BLUE)SCREEN DRIVE .FOLLOW THESE STEPS 1 TURNDOWN RED AND BLUE SCREENDRIVE 2 FOCUS THE GREEN (YOU SHOULD SEE SCANLINES) 3 TURN DOWN THE GREEN SCREENDRIVE 4 TURN UP THE RED SD UNTILL YOU SEE RETRACE LINES THEN BACK IT OFF TILL THEY ARE GONE. 5 FOCUS RED (UNTILL YOU SEE SCANLINES) 6 TURN RED DOWN AND TURN UP BLUE 7 FOCUS BLUE (BLUE WILL NOT BE AS GOOD AS RED+GREEN NOW YOU ARE IN FOCUS, NOW YOU NEED TO GET SCREENDRIVE BACK THE BEST WAY IS TO, PAUSE A DVD ON A BLACK SCREEN SELECT PLAY MOVIE AND HIT PAUSE RIGHT AFTER . TURN ALL THE LIGHTS OFF IN THE ROOM AND USE A SMALL FLASHLIGHT TO ADJUST SCREENDRIVE SO YOU DONT MOVE FOCAS BY MISTAKE. THE TRICK IS TO END UP WITH A VERY FAINT GRAY SCREEN WITH EACH COLOR UP AS FAR AS YOU CAN WITHOUT SEEING ANY COLOR ON THE TV. WHEN YOU GET THIS TRY PLAYING THE MOVIE. MAKE SURE THE BRIGHTNESS AND CONTRAST IN THE TV ARE AT A NORMAL LEVEL BEFORE YOU START . COLOR,BRIGHTNESS,AND FOCUS IS NOW SET TO YOUR DVD PLAYER.DO A FINAL CONVERGANCE AND YOU ARE DONE!
IF YOU CAN'T GET A COLOR TO FOCUS YOU MAY HAVE TO DO THIS MANUALY. SOME TV'S YOU CAN LOOSEN THE NUT ON THE CRT LENS AND MANUALY FOCUS IT. (LIKE AN OLD CAMERA). IF YOU GET THIS FAR YOU MIGHT AS WELL CLEAN THE LENS WITH A VINEGER BASED GLASS CLEANER (SPRAY THE RAG NOT THE TV) TAKE A LOOK AT THE MIROR, CLEAN IF NEEDED. IF THE MIRROR IS REAL DIRTY THEN THE SCREEN MUST BE BAD TOO.TAKE THE SCREEN OFF AND CLEAN THE BACK SIDE IF NEEDED. LOOK INTO THE LENS AT THE PICTURE TUBE YOU SHOULD SEE A NICE BRIGHT CLEAN PICTURE IF IT LOOKS CLOUDY YOU NEED TO CHANGE THE LIQUID IN THE CRT GUNS.I DON,T THINK YOU WAN'T TO TRY THIS YOURSELF. TIP(I USE A LITTLE ARMOR ALL WHEN I CLEAN LENES, THIS REPELS DUST LIKE IN YOUR CAR) IF YOU CHANGE YOUR FLUID AND WANT TO KNOW WHERE TO GET NEW FLUID I PUT CLEAR ANTIFREEZE IN MY PIONEER TV 3YEARS AGO AND STILL LOOKS GREAT "NOT KIDING" HOPE ALL THIS YOU. IF YOU ARE NOT COMFORTABLE TO DO IT. HAVE IR SERVICE. REPAIRING THIS WILL BE YOUR BEST OPTION>THANKS

Hitachi 51SWX20B... | Answered on Jan 09, 2011


u pull the speaker grill off , u have to pull this really hard then if u look close to the screen u would see 4 screw right under the screen after u pull out this screw u have to go up then pull out the screen

Hitachi 51SWX20B... | Answered on Nov 03, 2010


If no remote function, unplug set for a minute and plug back in; if not the problem something is wrong in either power supply or sweep circuit of set--

DOES POWER LIGHT COME ON AND STAY ON?

sd tech

Hitachi 51SWX20B... | Answered on Sep 20, 2010


Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.
This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
•Screen looks 3D
•Colors don't line up
•One or more colors can't be adjusted when using the convergence menu.
•Screen is bowed or warped.
•TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some photos of convergence problems


a56fe79.jpg

6d0da0b.jpg

fcabb43.pngCONVERGENCE SOLUTION

You can see some more examples and find a fix using this link on Fixya - CLICK HERE

Hitachi 51SWX20B... | Answered on Aug 28, 2010

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