Question about Projection Televisions

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Tnp2ah046 I think I burnt the the board trying to desolder the IC convergence chips. Should I try to find another board? If I get another board will I have to solder much? One more question. The large red wire that resembles a spark plug wire, does it pull out? I didn't want to get to rough with it. Thanks!

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  • johndavid May 11, 2008

    The model number is pt-47wx54j. The board number is tnp2ah046. Do you have a schematic? I'm not sure if I'm ready to give up, I might try to use a jumper on the board. We used a 25 watt iron but the wick didn't seem to want to pick the solder up.

  • johndavid May 11, 2008

    Maybe 3 solder points were lifted on the board. We only replaced one of the convergence chips when we realized what happened. When we tried the tv it turns back off. I can send a pic but it will probably be this afternoon.

  • johndavid May 11, 2008

    panasonic pt-47wx54j, part number tnp2ah046.

  • johndavid May 11, 2008

    I will certainly consider another board as long as I just have to plug it up. I didn't take the other board completely off because I wasn't sure of two wires. It looks like it may be a high voltage wire. It looks like it may come from a transformer. It's red and looks like a spark plug wire with insulators and there is a smaller red wire. I pulled the wires thinking they might snap out, but I was afraid to pull too hard. I have a friend who is a retired electronics guy, if I had a schematic I think he could fix the board with a couple of jumpers. All help is greatly appreciated.

  • johndavid May 13, 2008

    can someone look at my last post and advise me on the red wires

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You can get a service manual at the following link plus free online support. Hope this helps.
http://servicemanuals.vstore.ca/

Posted on May 13, 2008

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I think the wires may have come from the HVB, check out the following link for more info

http://flagrantdisregard.com/replacing-sony-hvb/

Posted on May 13, 2008

  • Benjamin Patri
    Benjamin Patri May 19, 2008

    Did you follow my suggestion? Were you able to fix your tv? Please let me know and rate my solution if you got it fixed so I can receive feedback on this, thanks

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I wonder how badly did you burn it?

can you take a image?

Posted on May 11, 2008

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Yes..get another board..and be careful about that soldering iron and it's rating..

is that the model number? who's the maker? We can find you a replacement board online.

Posted on May 11, 2008

  • Patrick Michaels
    Patrick Michaels May 11, 2008

    well..the integrity of the board is now questionable, and those solder joints are notorious for being cold, if not done with proper equipment. Do you want to locate a replacement board?

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2 Answers

I was told to adjust the convergance manualy and i did the red fine but the blue will not move


Convergence output IC's need replacment ,there is two of them one for Vertical and another one for horizontal deflection.One of them is burnt but my suggestion is to replaced both.They are mounted on big hetasink and easy to replaced

Aug 23, 2011 | Samsung PCL545R 54" Rear Projection...

1 Answer

Need to replace the ic convergence chips but not sure how


U have tools like philip screw drivers,long noise plier and a soldering iron,soldering wick or desoldering pump and solders?U Know how to do basic soldering?Tries websites like Tvrepairworld.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.U can go to You Tube type in convergence problems,will see a video by someone tutoring doing convergence board repair.

Jun 17, 2010 | Panasonic PT-47XD64 47" Rear Projection...

2 Answers

JVC AV-48WP30 , how to change convergence


First of all tools,requirement to do the work on the Convergence board to do changes the 2 STK convergence ICS and some or all it resistors.U have a soldering iron,desoldering pump or soldering wicks and solders?Don't?must buy to do desoldering and soldering?Tries Amazon.com to buy solders.Tries wesites like Tvrepairworld.com to buy the convergence kit to replaced ur self,and buy the soldering iron here it have the desoldering pump attach to the sodering iron it self.For video tutoring how to take out convergence board out of the tv and replacing the 2 STK covergence ICS and some or all it resistors.Might included in the buying of the convergence kit,not,Try You Tube type in convergence problems,will have video some body doing it.

Jun 07, 2010 | JVC AV-48WP30 48" Rear Projection...

1 Answer

How do you replace ic chips on Panasonic 52 inch hdtv projection?


Most IC's on circuit boards these days are of the surface mount variety. You will need special Desoldering Equipment to remove these chips, especially the one wth 100 or more pins, the type of equipment used in this process heats all sides of the chip at once while a small suction that grabs the chip for removal. Now the SIP chips (Single inline package). chips which usually consists of less then 20pins can be removed with a desoldering gun such as the HAko 880 desoldering gun. Or you can use a standard soldering iron and solder Wick, that can be found at Radio Shack under Soldering Braide).. These procedures are common for all IC replacement. I am asuming you are trying to remove the Convergence IC on this model, The two large Black one labeled STK-392-110, the correct and easy way to remove these is to remove the entire board from the unit and remove the two screws holdinf each one in place, Unsolder the pins of each one and remove the IC, reverse this process to reinstall them. Good soldering technique is critical here as you don't want to bridge pins together causing yourself more problems. Double check your soldering and Double check it again.

Thanks :
Delhielectronics@live.com

Sep 28, 2009 | Panasonic PT-53WX53 53" Rear Projection...

1 Answer

Sony 57" dlp TV CONVERGENCE problem


You have to pull the chasis completly out the set. Make sure you know where all the wires go that u have to unplug. Also u may need to change open resistors near the convergence amplifiers.

Apr 23, 2009 | Projection Televisions

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

Oct 06, 2008 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Replaced ic chips and still have red convergence problems


convergence resistors they can often be burnt open when the ICs go out.

Aug 12, 2008 | Toshiba 43H71 43" Rear Projection...

1 Answer

Problem with Samsung TV


SAMSUNG Convergence Problem


It looks like blue convergence. Look at menu, select convergence and see if blue top is bent down on convergence adjust screen. Probably won’t adjust.

Some Samsungs have convergence IC’s on a separate convergence board in the back of the TV. Others have the IC’s mounted on the main deflection board. Either way the board has to be removed to get at the dud IC’s and associated burnt resistors.

You remove the appropriate board, determine if any resistors are burnt or damaged, replace any burnt or out of tolerance resistors, replace 1 or 2 IC's and re-install the board.

Now you have to adjust it to look like new.

If the unit has not been misadjusted and everything is OK now, running the auto focus may put the picture back to it’s previous stunning quality, as it was before IC failed.

If after self or autofocus it is still misadjusted noticeably, try the customer convergence adjustments. Operators’ manuals are available on web through searching.

If convergence can not be adjusted properly, you messed up chip install or resistors may be wrong value or open; or it needs major adjustment.

If you live around Calgary, Alberta try me instead:

http://calgaryconvergencerepair.weebly.com/convergence-explanation.html


Or try to the find the repairperson part of this website (on the Homepage) and search postal code. Maybe you will be lucky and someone from your area is listed for Projection TV repair.

Most rookies doing this job will cause damage and not be successful. They will pay double for someone to fix their mess or end up scrapping the TV. It is not a simple task. It is more difficult than batteries on a remote.

Good Luck

easyab

Jun 06, 2008 | Samsung HCN4226W 42" Rear Projection...

1 Answer

One color Bow-tie Effect.


SAMSUNG Convergence Problem


It looks like blue convergence. Look at menu, select convergence and see if blue top is bent down on convergence adjust screen. Probably won’t adjust.

Some Samsungs have convergence IC’s on a separate convergence board in the back of the TV. Others have the IC’s mounted on the main deflection board. Either way the board has to be removed to get at the dud IC’s and associated burnt resistors.

You remove the appropriate board, determine if any resistors are burnt or damaged, replace any burnt or out of tolerance resistors, replace 1 or 2 IC's and re-install the board.

Now you have to adjust it to look like new.

If the unit has not been misadjusted and everything is OK now, running the auto focus may put the picture back to it’s previous stunning quality as it was before IC failed.

If after Perfect Focus it is still misadjusted noticeably, try the customer convergence adjustments. Operators’ manuals are available on web through searching.

If convergence can not be adjusted properly, you messed up chip install or resistors may be wrong value or open; or it needs major adjustment.

If you live around Calgary, Alberta try me instead:

http://calgaryconvergencerepair.weebly.com/convergence-explanation.html


Or try to the find the repairperson part of this website (on the Homepage) and search postal code. Maybe you will be lucky and someone from your area is listed for Projection TV repair.

Most rookies doing this job will cause damage and not be successful. They will pay double for someone to fix their mess or end up scrapping the TV. It is not a simple task. It is more difficult than batteries on a remote.

Good Luck

easyab

Jun 05, 2008 | Samsung HCN4226W 42" Rear Projection...

3 Answers

TNP2AH046 board


Yes. let me know to contact you

May 20, 2008 | Panasonic PT-53WX53 53" Rear Projection...

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