Question about Samsung HCM422W 42" Rear Projection Television

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Convergence problem suspect on sam hcm422w

Can't get red, blue, and green to align in setup menu. Screen has pincushion from top and bottom and also seems to be a triple image. Sounds like either need to replace stk-392-040's or sub assembly board or both. Would like to narrow down exactly what i need to order and any recommendations of where to get parts would be appreciated as well

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  • blowe0072003 Jul 03, 2008

    I am having the same problem plus my waste of a human life ex roomate happened to lose my remote control to the TV so I can not even attempt to auto focus the TV. I need to order a new remote though I bought the TV from a friend of mine (he bought it in Chicago) I live in Ann Arbor, MI. and I don't know where to find one, also what kind of expense can I figure to have it repaired?

  • blowe0072003 Jul 14, 2008

    Ok it's me again, I got the remote auto focus didn't solve anything, I would like to know how much a repair like this might cost.

  • kamats Aug 28, 2008

    MY Samsung Tantus TV (HCM 22) also has a convergence problem. The 'red' band is all over the place and I see a red 'ghost' image for everything. The "Perfect Focus" function only goes upto 20% and gives up. The red band does not converge in the menu setup. I am NOT a DIY person!! Any suggestions would be greatly appreciated.

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Check this link for the parts: http://www.electronic-repair-kits.com/STK392-040.htm
If you DIY, I would suggest to check the low value/fuse resistors found near the STKs area.
Good Luck.

Posted on Mar 01, 2008

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How do I adjust the convergence properties on an RCA rear projection tv?


Normally on the RCA rear projection TV's you would bring up your menu and choose the Setup menu, then press OK on the remote. That menu would then have Convergence as a choice. Once that was chosen the next menu would give you the choice of either letting the TV run it's own Autoconvergence program, or you would select either Red or Blue convergence.

Choosing Red Convergence would bring up a Yellow cross-hair in the middle of the screen. If the Convergence was not correct you would see separate Green and Red cross-hairs. Once they were perfectly aligned you would again see one Yellow cross-hair.

Choosing Blue Convergence would bring up a Blue cross-hair in the center of the screen. If the alignment was out you would see 2 Blue cross-hairs. Using the Up and Down and Left and Right cursor keys you would adjust the alignment until a single solid Blue cross-hair was in the center of the screen.

May 15, 2011 | RCA Projection Televisions

3 Answers

Screen lookes like colores separating


Here's all I find regarding bad convergence from the techrepairCD:
RCA ~ITC222 D52W20~Convergence bad~~~ITC222~Replace leaky DL032 on
deflection board~~~~~~

RCA~D52W20Y ATC221~Convergence goes out/bowed after on for a few
minutes~~~ATC221~Problem may be on the deflection board. Was unable to
pinpoint where in this case.~~~~~~

RCA~D52W20BYX1 ITC222~Convergence way off after replacing small signal
board~EEPROMS were transferred over to new board~~~IK210 was
defective..transfer the new EEPROM back over.~Remember on these
sets*when replacing the SSB* if there is a small P on corner of
screen*hold volume on remote for 8 seconds after it reaches minimum.~~~~~

RCA~D52W20BYX1 ITC222~Can not align blue convergence* bottom really
bowed* possibly either color after replacing SSB.(Or no auto
convergence.~(Service menu: turn power off for 30 seconds* press vol dn
and ch dn* simultaneously for 8 seconds* set turns on with service menu
options)~~ITC222~In service menu* select convergence. If sensor
calibration was performed when convergence was too far off* it will not
alighn.~Get crosshatch with straight lines* perform sensor calibration*
then attempt convergence alignment again. Be sure to store settings*
then do sensor calibration again.~You must get a green flash of the
screen after sensor cal and a check in the box. RED flash indicated
convergence settings are too far off~~~~

RCA~D52W20BYX1 ITC222~no convergence correction~~~ITC222~LP650
(259271) DP670 (259246) & RP632 (259564) 4.7 3W on convergence power
supply board~~~~~~

Oct 28, 2008 | RCA R52WM24 52" HDTV Projection Television

7 Answers

I hav a RCA model D52W25 its 52" it has convergence problems dont know how to setup the color things can u help??


Click on the following link :

http://www.riddledtv.com/repair/RCA.html. Go to the following section

RCA 52" D52W25 ITC222 rca_d52w25_small.jpg
(2) (3) (4)
(5) Stretched Image at top and bottom edge very distorted. Reheat all the surface mount solder points on the Small Signal Board. Then realign the set including convergence menu. To enter service mode: power off the set for 10 sec, then hold down Vol- and Ch- buttons for 10 sec. See this link: Alignment Procedure (pdf)


Also download the Alignment procedure pdf file. Hope this will help you. Please let me know if the information was of any help to you or you need further assistance.

Thanks

Oct 08, 2008 | Projection Televisions

1 Answer

I have a 55 inch rear projection mitsubishi tv. it recently has started showing what looks to be white spots when viewed at a distance on a dark screen. when you look at it closely it actually is red green...


It is called Convergence. You have three CRTs. Red, blue, Green. When they are not aligned, you will see the individual colors. See if you can do some alignment in the users menu. Look for Converge or Convergence in the menu. Either under video or setup.

Mar 09, 2011 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Convergence


This is an indication that the STK is bad. The PC board should be marked to indicate which one if for the green.

Dan

Apr 13, 2009 | Samsung HCM422W 42" Rear Projection...

1 Answer

Covergence out of alignment on 1/4 Vertical left side of screen


You need to manually adjust the alignment:
On remote, press Menu to get to the main menu
Then arrow down to "ADVANCED FEATURES"
Then press "enter"
Then Arrow down to "CONVERGENCE" and press "enter"
"Red Convergence" should be highlighted
Press "enter"
You now have Green, Red, and Blue overlapping crosses.
If Red is out of whack, use arrows to align
To toggle to blue (and back to red), press "VIDEO"
Then align blue cross
Once the crosses look aligned, and nice and white, press "AUDIO"
This will bring up the Advanced Convergence screen
This is a grid of the same overlapping colors
You have control over the Red and Blue
If Green is very out of whack, you'll need a repairman…
While the "target" is flashing, you can move it around the screen with the arrows
Place it over an intersection to adjust, then press "enter"
Now the "target" is steady (not flashing), and you can use the arrows move your color
When it's aligned, press "enter" again
Now "target is flashing, and you can go to the next square.
You cannot adjust every intersection.
Some areas need to be adjusted via the adjacent intersection
When you're happy with color you're working on,
Press "video" while target is flashing to change to the other color
Repeat the above (blue is much harder to see and adjust for me…)
When you're happy with the entire grid, start hitting "Menu"
Each press brings you back out one menu level, until you are out of them
Once you're used to the process, it should take no more than a minute or two.

Mar 02, 2009 | Mitsubishi WT-46805 46" Rear Projection...

1 Answer

Pioneer SD-641HD5 red convergence - not chip problem!


Replace Both of your STKs if they are STK392-110s do not go back with them use STK392-180s better ICs, The 110s fall apart and do not hold up.

Nov 12, 2008 | Pioneer SD-533HD5 53" Rear Projection HDTV

2 Answers

Warped Picture, Separated colors


Each color (red,green & blue) has an amplifier IC (STK-).
When there is a convergence issue,the first step is change both
IC's for reliability. Then check for open fuses devices,usually
pico fuses.Then re-check convergence alignment.......T.

Feb 07, 2007 | Philips 60PP9352 60" Rear Projection...

2 Answers

Severe convergence/pincushion problem on green


projo tvs dont have pincushion problems this product needs a couple of resistors and two stk packs depending on who you go to 300-400

Nov 20, 2006 | Panasonic PT-53WX53 53" Rear Projection...

2 Answers

Pincushion Picture on a big TV screen!!!


The set has 3 IC's(one for each color)strictly dedicated for the aligment of each color,if one them does not align is because is going bad or is already bad becuase picture can not be adjusted,the IC's can be identify because they are mounted on a heat sink and have the markings STK--- ---,they are all the same and need to be replaced with an exact replacement.If you are familiar with tv service you can replace them,sometimes the new ones need to be aligned from the service menu,you will need the service manual,soldering and unsoldering will be involved,If you are not too familiar be safe and seek the assistance of a servicer.

Nov 03, 2006 | Sony KP-46WT500 46" Rear Projection...

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