Question about Samsung HCM4215W 42" Rear Projection Television

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I replaced the convergence board but still have the same problem.

I checked all of the connections and they're all tight. What the problem originally was that the convergence wouldn't stay and the blue would always be off to some degree. But then a couple weeks ago the blue freaked out completely and on the left it's like there is a zig zag of blue down the middle of the screen and the left side has a bulge of blue/yellow. I can't adjust the convergence to resolve it at all. I'm wondering if it might be a the blue bulb now. Any ideas?

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The problem is not with the convergence board. Its the Convergence ICs which are located on the sub board. Use two stk392-040 ICs as your model probably has the 392-010 now. But you can get two new replacement ICs at the following link and they will provide free instalation instructions with pictures so you can do the repair yourself. Heres the link you will need two STK392-040 Convergence ICs.
http://servicemanuals.vstore.ca/

Posted on May 22, 2008

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The TV was unpluged for one hour. Once pluge in the blinking green light started. Now it doesn't turn on.


For starters..Your convergence board is my first concern. If you can pull the board out, do so with great care. There are many, many bad grounds here by now. I can not say this enough. The convergence IC has been separated from the board. Examine the pins and resolder as necessary. Do not over solder, you do not want to solder the pins together or you will create a short. This goes for any IC with pins you resolder. Check the diode connections, resistor connections, jumper pin connections,connections where cables jump together between boards, capacitor grounds. If you can, check all electrolytic capacitors with an ESR meter, and replace capacitors as needed. Heat sinks will need resoldered tightly to the boards. Start with this and see what happens. There is much to do, with the one board. The next board will be the power supply, and you will have to repeat the effort just mentioned. But, try the first plan and see what happens.

Feb 18, 2011 | Mitsubishi WS-55819 55" Rear Projection...

2 Answers

How do I replace the FL231 fuse on the circuit board, removal and re-soldering I was told this will fix the convergence issue and that the convergence module is not bad.


Yes, but before powering the set back on you must fix the original issue that caused it to open. The high voltage transformer location LL008 will need to be un-soldered and all pins and pads cleaned. Then re solder the pins to the pads with solder. The original solder was lead free but it tended to crack after it heated up thus causing the intermittent connection and then opening the 400ma fuse to the convergence panel. The fuse is no longer available, but I have included a link to be able to purchase it on ebay. Make sure you ONLY use the size fuse needed as anything higher could be a fire hazard. Please take a moment to rate my answer. Thanks...

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220478092023

Nov 24, 2009 | RCA D52W23 52" HDTV CRT TV

2 Answers

Need of a Convergence Board for an RCA PROSCAN Model 80690WW1


You can order a replacement Convergence Board or Convergence Amplifier Board for this model (PS8069) from a major RCA parts distributor at the link below:

RCA PS80690 Replacement Part Convergence Board

RCA PS80690 Replacement Part Convergence Amplifier Board (2F27039-502)


Please note, these boards are no longer available from the original manufacturer (RCA) and only appear to be available from PTS.

Apr 08, 2009 | RCA Projection Televisions

2 Answers

Convergence 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
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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.

Mar 05, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

Location of the convergence circuit board inside the KP46WT510


You have a convergence problem. Here are some of the most common symptoms. 
Screen looks 3D
One or more colors can't be adjusted when using the convergence menu. 
Screen is bowed in but stationary.

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. 

>>>Solution<<<< 

You need to replace the convergence chips and convergence resistors. 

Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. 

Jan 29, 2009 | Sony KP-46WT510 46" Rear Projection HDTV

1 Answer

I have a convergence problem. My Sony KP-65WS510 has a picture that looks like 3-D and bows at the bottom and top of the screen. I already replaced both the IC's STK 392-560 (2 qty.) and check all six 3.5a...


You have a convergence problem. Here are some of the most common symptoms. 
Screen looks 3D
One or more colors can't be adjusted when using the convergence menu. 
Screen is bowed in but stationary.

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. 

>>>Solution<<<< 

You need to replace the convergence chips and convergence resistors. 

Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. 


Dec 09, 2008 | Sony KP-57WS510 57" Rear Projection HDTV

1 Answer

Hutachi 43inch rear projection 5 yrs old


Hi,

Hitachi Convergence

Check out the Convergence Gallery. If you see the colored outlines or color shading as in the Gallery, you have a convergence problem.

The repair for a Hitachi requires the replacement of the defective IC or ICs and any damaged or smoked resistors. Some models don't have a separate convergence board and the board is not usually available for the ones that do have a separate convergence board. Usually there is little alignment required after the repair. If you play with all the adjustments before the fix, hours may be spent re-aligning.

If you change the original ICs with substitute "new and improved" parts that are talked about in the blogs, you will probably create problems. Use the original ICs and resistors.

Don't monkey with it.

This is a delicate and difficult repair. If not done by someone with some electronic repair experience, the TV will likely end up as junk or cost considerably more for a tech to fix the damage done.

If you live in Calgary, call me. If elsewhere, find a competent tech.



easyab

Jul 30, 2008 | Samsung HCN4226W 42" Rear Projection...

1 Answer

Blowing Convergence Amp Boards


either the DCU Digital convergence Unit or the velocity board are most likely the fault.

Jul 10, 2008 | Samsung HCN4727W 47" Rear Projection...

1 Answer

D52W19 convergence problem


Since this is an intermittent problem, I would first check the convergence board for cracked solder connections or other loose connectors (or leaky capacitors and diodes). If you still cannot find the problem, you will most likely have to replace the convergence board assembly p/n 264103. It can be quite difficult to re-converge if you do this unless you swap the two eeprom IC's on the original board to the new board IK210 and IK211 then Go Into The Service Menu Geometry And Set V Slope And H Position, Save, Then Back Out To the Customer Menu And Run AutoConvergence.

Dec 22, 2006 | RCA D52W19 52" Rear Projection Television

4 Answers

VERTICAL PINCUSHION (NORTH & SOUTH PART OF SCREEN)


DUDE!!! Both manuals are available at http://www.servicemanuals.net/ I dont know where you tryed before to get a manual for these sets but both modela are available online at like 20 differant spots.. This one site is the one I trust the most, as they have 99% of any manual I have ever Needed. Good Luck

Aug 08, 2006 | Pioneer PRO-200 60" Rear Projection...

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