Question about Samsung HCM4215W 42" Rear Projection Television

1 Answer

Red Convergence Issue( Samsung HCM4215W)

I already replaced the corresponding convergence chip. Once I apply power to the TV the red convergence goes bad again after a few minutes. Could anyone help me out?

Thanks...

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  • Samsung Master
  • 3,459 Answers

Bad chips or faulty soldering.

Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
Red Convergence Issue( Samsung HCM4215W) - 5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:
ee1ca68.jpg

You can see more examples and find aRed Convergence Issue( Samsung HCM4215W) - bb0cf99.png.

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Posted on Mar 25, 2010

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Posted on Jan 02, 2017

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1 Answer

Pt-53wx53 Panasonic Projection TV Turns off


OK< likely one of the new chips are bad or when soldered in you shorted pins at that time----3 blinks is short protection and you are going to find ONE of the light blue 2.2 ohm resistors is open (usually discolored in middle).

Having changed hundreds of chips in this model once in a while you get a new one that is bad---replace both again.

How did you get at them----remove the board or pull the light box?

Oct 26, 2012 | Panasonic PT-53WX53 53" Rear Projection...

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Sony KP-57WV700 Convergence Repair Failed - TV won't stay on


Sorry ur convergence ICS are shorted and dead.Because u put in solders and take out solders to many times.The heat of ur soldering iron,and the electrostatics will kill the ICS,if keep putting heat in the ICS legs alots times.Buy the convergence kit again,replaced every componnents in that kit to ur tv.Because,the kit been research and put together.What the most common componnents that burn and dead in the convergence circuits.

May 04, 2010 | Sony KP-57WV700 57" Rear Projection HDTV

1 Answer

I already change the convergence chips and the red lines still bowed and the problem was not corrected, any clue on what else could be wrong?


First check the 6 resistors on the convergence board 2.2 ohm or .22
red ,red silver gold i think . if they check with in 5% , you got a bad
convergence IC , it happens. remember the chip cost about 8-12.00 etch
so , once in awhile you get a bad chip. and since the bowing red line
is normally corrected by the convergence chips . that makes them
highly suspect. also the convergence set up should allow you to
offset this . If not , swap the chips again.

also check your solder joints ,make sure you don't have any gaps.
or bridges.

If you have any questions just comment and ill respond

Rob

Oct 12, 2009 | Toshiba 57H81 57" Rear Projection...

2 Answers

Turns on and within a second goes out


Bad capacitors. They're cheap. Look for the ones closest to where the power cord comes in to the main pcb board. This will be your power supply circuit. Change them! They're probably dried out. If they're bubbled up, they're also bad. They're so cheap though, just replace them all.

May 21, 2009 | Panasonic PT-47WX53 47" Rear Projection...

2 Answers

Color alginment is off


Your TV most likely has one of two possible problems.

Problem #1 - Failure in the convergence circuits. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem


  • 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.
Here are some photos of convergence problems.

3dc9420.jpg
645fba6.jpg
0dcec37.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

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. Notice how dull the colors are and how white the screen looks. The screen may also look red, orange, dull, etc.

9e7eb5b.jpg

TV set after fluid change. Notice how bright the colors are now. Everthing looks crisp and sharp again.

182c282.jpg



2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

May 20, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

Picture goes bad (fuzzy&scrolls&lines) on Hitachi projection tv


Sounds like your convergence modules have gone bad. They have 21 close spaced pins to unsolder and resolder. You'll need a soldering iron with a fine point tip and thin gauge solder to do the repairs yourself. Solder bridges between pins are common when soldering these module pins, so have some unsoldering wick handy if you're going to fix it yourself. You can get parts from here: TV Parts Universal TV Stands DLP Chips ShopJimmy

Jun 14, 2017 | Hitachi 50UX57B 50" Rear Projection...

2 Answers

60PP920217F Convergence Problem?


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • 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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


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

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Feb 13, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

Convergence Board (I hope)


check this out I have the same problem check your solder spot make sure the solder points are not touching one another, that could be one of the reason is doing this or just to make sure you can desolder the stk chips clean the holes where the pins go trough the board and power the tv with board and if the tv start fine if could be bad stk chips be very careful when desoldering or soldering good luck about another is not worth it they cost too much around 350-450

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5 Answers

Toshiba TP55H60 power down after start up


Try the following
1-unplug tv
2-remove bottom cover on tv
3-tap the power supply frame a few times (where the power cord enters the tv)
I had the blinking red light on my tv. I tried other solutions like removing the red wire a few times etc. Tapping the power supply frame solve the problem.

Aug 11, 2007 | Toshiba TP55H60 55" Rear Projection...

1 Answer

Update and a few questions (Convergence Problems - VS-55601 55 in Projection)


yes, they go bad interment because they have a large current go thru them and they generate heat, they are mounted on a heat sink with white silicone to help disapate heat. replace both not just one, try MCM Electronics get heat sink compound also

Oct 06, 2006 | Mitsubishi VS-55601 55" Rear Projection...

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