Question about Hitachi 46F500 46" Rear Projection HDTV-Ready Television

2 Answers

Color convergence? turned on TV, only green color misaligned, mostly on left side, upper part of screen. Used magic focus, no effect. Daily use for 3 yrs.

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  • scubadrew Oct 24, 2007

    What are the correct value and wattage for the resistors that should be replaced when teh IK04, IK05 Amps are replaced.

  • scubadrew Oct 27, 2007

    I will try. I have the repair manual for the TV but the scanned image of the PCB layout isnt so good.  Have to actually look at the markings on the PCB under the resistors.  Cant measure resistors in ckt can I?  I want to buy a kit that has all the resistors and the two power amps and i would do the reapir all at once even if only one power amp (red and green misalgined) appears to be bad at this time.

  • scubadrew Dec 27, 2007

    On Dec 6th I repaired with the advice I got from this blog, awesome help to the Fix-Ya team. Parts arrived a day before (2 amps and the resistors suggested, cost about $45.00 for genuine Sanyo parts).

    I couldn't completely remove the convergence board, there were three high voltage wires plugged into a large transformer like assy and I tugged on the wires and they didn't seem to want to "unplug". I was able to do the work behind the TV given the length of the wires, moving the board to remove the STK392-150's. Replaced both (with new STK392-150's), no resistors appeared damaged, left them alone, measured them they seemed to be OK. Lesson Learned....dont try to unsolder the heat sinks with a hand solder gun (left them on and pried the old converg amps off of them). Solder wick worked well on the leads, removed old parts without too much problem. Got a small tube of heat sink paste from radio shack. Direct TV guy with HD DVR upgrade showed up as I was reassembling the TV. By the time he was done with the new LNB on the roof we turned everything on, ran magic focus and alignment (and HD 1080i picture) was great. Thanks Terryfic, worthy of a wiz rank.

  • akrepi Jul 23, 2008

    I have the same problem with the green line exactly as stated on the first post.. i tried to fix it with magic focus- manual no luck now when i press magic focus on the front wont work at all .. i live in london Ontario and would like to be pointed to the store where you got the set of IC's so i can go and get the same kit myself, please if you have some pictures of the board and things you changed would actually get my head straight as right now i am a bit confused..

    If someone has the kit number and the service manual please mail it to me

    i look forward to hearing from you... your help is much appritiated

    thankyou

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Can anyone give me the resistor values for location RK 42, RK 46 and RK 62? Hitachi 46F500 TV. Or can I be pointed to the location of a service manual?
Tony

Posted on Jun 06, 2008

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Replace convergence IC's and then
activate magic focus

Posted on Oct 23, 2007

  • Vista Electronics Oct 24, 2007

    May not be any resistor damage = if they look bad,then check
    value with meter or give me location #............

  • Vista Electronics Oct 27, 2007

    Practice visual acuity technique! If the B+ resistors look good and check good ( in circuit ) then they are good!...Change  IC's

    then magic focus and see.....T.



    Best to use Hitachi IC STK 392-110 subs to upgrade

      STK 394-160E  made by Sanyo  part # CZ01341.....

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1 Answer

Lightnings like lines on a half screen
Must be of a back-light problem. Contact any service technician. This is not a user repairable fault.

Jul 14, 2013 | Samsung LN46B530 LCD TV

1 Answer

Turned on tv and it looked like 3d. Found red horizontal convergence lines extremely bowed. Cannot correct with magic focus either in auto or manual. What is the fix and what is more cost effective ......
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

Jan 09, 2011 | Hitachi 51SWX20B 51" Rear Projection...

1 Answer

Left side of sreen is blurry/halo effect. Right side is normal. Magic focus stops when it gets to green and flashes green number 3 on bottom left of screen.
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.


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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.

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TV set after fluid change

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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

Jan 08, 2011 | Hitachi 51F500 51" Rear Projection...

1 Answer

Turned on TV this morning and the colors were out of alignment. TV works just looks funny. Tried the magic focus and got most of the screen lined up....except the upper left hand corner where the colors...
There is a convergence output kit for this set. There are probably resistors in the convergence circuit that are starting to loose there values. If you are going to have the set worked on have them install the whole kit which includes the convergence outputs and resistors. Thanks

Oct 27, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

I get a split up of red and green in a wave at top of screen
The convergence ICs and resistors are the most likely things to cause that. You can get the convergence repair kit for the DP14G hitachi( 53UXX10B) at the following link which contains the parts and instructions.
http://www.tvrepairkits.net/

Jul 11, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

We are getting ghost images and the color is not correct
I have red concave lines going across the screen, plus wording appears double like a ghosting effect, this is ongoing from the time the tv is turned on until it is turned off. This started 3 days ago. Is it time for a new tv, its 9 or 10 yrs old now.

Mar 29, 2009 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

I HAVE A HITACHI PROJECTION COLOR TV. MODEL 53UWX10BA 52". I JUST MOVED THE TV BY TRAILER FROM ONE TOWN TO ANOTHER, ABOUT 25 MILES, WHEN I PLUGGED THE TV BACK IN AND HOOKED UP THE CABLES, THE PICTURE WAS...
Replace the convergence Ic's with a kit that is available through your local parts distributor

You must replace all resistors in the kit
If you are not good at soldering and de- soldering have a local tv shop do it for you

Good luck

Jan 27, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

The Model# is 53UWX10ba - Colors off in upper left part of screen
The problem is with the convergence circuit. If you can solder, try resoldering the pins on the convrgence ICs. If that fails to resolve the problem, replace the ICs. These ICs will be large and black, attached to a heatsink and be marked STKxxx.

Update this with your progress.

Dan

Jun 19, 2008 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

Hitachi 57SWX20B 3D Effect due to green light convergence problem
I'm trying to fix the issue on my 43FDX20B. So far, I'm able to move the lines up and down, but can't get the left/right motion to fix it. The attached link has the dynamic mode instructions, so you can correct this issue yourself.

http://home.comcast.net/~leebailey00/Hitachi_DCAM_Manual.pdf

The only thing I didn't have was the screen overlay jig the manual talks about. I decided to create one myself and use the screen as a beginning template. I went to our local hardware store and picked up some home window weather covering. The roll cost about $15, is a clear strong plastic and the template was very easy to create. I used a straight edge after I put dots on the plastic and measured the lines for being square and equal after I took it off my tv. Good thing is that if you don't like what you make the first time, you have a 25' roll to use to try again (ha).

Mar 01, 2008 | Hitachi 57SWX20B 57" Rear Projection...

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Green alignment
One of your convergence output IC's has burned out and needs to be replaced.

Jun 22, 2007 | Hitachi 53FDX20B 53" Rear Projection...

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