Question about Mitsubishi WT-46807 46" Rear Projection Television

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The red portion of the image jumps away from the other two colors

I've heard several ideas on what to fix when one of the colors separates from the other two on a rear-projection television:

(a) the convergence ICs are bad (STK392-570), or (b) the caps are bad, or (c) some of the soldering around these previous two categories of items needs re-working.


What ever became of the other folks suffering from this problem with their WT-46807 televisions?


Where can I get a manual to help me remove the circuit tray? I took the back off, but I can't even find the convergence chips.

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Re: The red portion of the image jumps away from the...

1)The correct solution is (a)....
2)Concerning pulling the chassis on a 46" Mits...
due to compact size,your set has a higher degree of difficulty.
The 73", 65" and 55" are easier to do the same repair.
3)Begin by removing lower front cabinet,then remove front access
panel.Next provide yourself with plenty of light to see inside....
Remove chassis bolts (3) in rear',unplug as needed,noting location
and routing.Next,locate snap clips on front of circuit tray-Release.
Gently pull back on chassis until clear to remove center board.
Almost must pull all the way.Remove & rebuild center PCB.

Posted on Oct 22, 2007

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2 Answers

Watching our Hitachi Ultravision 57" and the colors seemed to separate, seeing several images, each in it's own color. Ghost-like...any ideas?

yes that is always the same problem.,
that is the convergence module where you have two
ic call stk /but you can try the magic focus button if it work for a while and come back you will have to replace the ic.
hope that give you an idea
have a nice day

Apr 22, 2010 | Projection Televisions

1 Answer

There is a wave in the picture only in the upper left hand 1/4 or the screen. The rest of the screen is sharp. You get the colors separated and thus double image.

Projection TV sets have several common problems listed below.

Problem #1) Convergence


  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
Problem #2 CRT Fluid has clouded over.


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:

You can see more examples and find a fix here...


Mar 23, 2010 | Hitachi 46F500 46" Rear Projection...

1 Answer


This is a common problem. Its called a convergence failure.

Problem #1) Convergence


  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...


Feb 19, 2010 | Akai PT5598HD 55" Rear Projection...

1 Answer

Colors far out of convergence, and image is warped (bowed)

it sounds like bad solder connections on the convergence IC's if you do not resolder them right away the IC's will blow out then you wil;l have to replace them. Good luck
Larry Dillon

Aug 14, 2009 | Sony KP-57WV600 57" Rear Projection...

1 Answer

Red and green have separated. is this fixable?

yes this can be fixed
it is the convergence IC's that controls each color image alignment ,also other components(resistors , diodes , capacitors , ect..) in circuit with these convergence IC's(STK's) also need testing to see what other component has also failed or needs replacing.

Mar 19, 2009 | Zenith R57W46 57" Rear Projection...

1 Answer

Red color trouble

A picture or blank raster viewed from the front will have red marks if a portion of the image path from the green CRT to the front screen is blocked by debris or if the Green CRT is damaged from burn-in or other situations. If green is missing, red dominates virtually any image.

Severe CRT burn-in can occur when there is no sweep signal to a yoke. I have seen technicians removing yoke connectors on RPTVs in attempts to find shorted or suspect components.

Occasionally a damaged TV is sent back to customers as repaired and a service order for a new "fault or complaint" is initiated when the customer complains of the red or green marks or lines.


Jul 25, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

I have a samsung sp42q2hl, which on the front of the tv say's it is a hdtv ready, and yet i cannot watch high defenition images or movies, also there is no hdmi inlet at the back so i'm not sure how you...

Use component to connect this will give yu HD picture,
On the back of the set you will see A group of 5 phono sockets Blue, Green, Red, These carry picture,

Then Red, White, these carry stereo sound.
Component video 0831d.gif
Component-video cable b.gif
Component video improves the picture quality even more by not only separating the color from the black-and-white portions of the picture but by further splitting the color information into two color-difference signals. When the picture signal is split up in this way, you get an unfiltered, uninterrupted image, with better resolution and greatly improved color saturation. And this is why component video is the predominant method of hookup from HDTV set-top decoders to HDTVs.

So this is how your set can produce HD picture from Hd source.

Jun 22, 2008 | Samsung Projection Televisions

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Blue red and green lines thorugh 1997 Sony 50" rear projection

Confirmed Hitachi subs all STK392-110,120 and 150 to
STK394-160 ....I use Hitachi part number CZ 01341 = no re-calls

Feb 19, 2008 | Sony KP-46WT500 46" Rear Projection...

1 Answer

Images: three colors appears separates in the screen: red, green, blue

do they look like these:

Dec 05, 2007 | RCA HD52W59 HDTV Projection Television

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Picture separated on 1/2 of screen

This sounds like a convergence problem. This is a common problem that is usually fixed 98% of the time by re-placing the STK392-020 ic or STK392-110, and check the fuse devices on the covergence PCB. I'm sure the actual parts numbers depend on the peticular brand. Good Luck!

Nov 09, 2006 | Toshiba TP43H95 43" Rear Projection...

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