Question about Panasonic PT-47WX49 47" Rear Projection Television

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Reconnecting Ciruit board

I pulled a real *****. I didn't mark all of the connectors when I replaced my convergence amplifiers. I thought I would commit most of them to memory as I had planned to make my changes then reinstall the PCB immediately. Well as thing go, it's been 7 weeks since I removed the board, and my memory flushed it's self of all unnesessary information, including one of the connector locations. Most all of the connections are self explanitory as the connectors will only fit in one location. But their is one six lead connector that will fit both the M8 and the M9 connections on the PCB anyone who can direct me to the correct connector will be appreciated.
The moral of this story is: Label All questionable connections!! (this includes the M8-M9 connector and the R-G-B CTR connections (I did mark the R-G-B connections)
Thanks

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It goes in the M8 spot

Posted on Jan 11, 2009

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In replacing the two STK-192-150 chips, I need to remove the board. I am concerned about the 4 white interboard connectors along the left side of the board. Can you just pull up the board?


In my experience it's easier to just pull the chassis out and flip it over. The white connecters can be disconnected by applying sufficient force pulling up, you can also use a screw driver or pen. Place the pen under the connector flat and pull up on either side to apply even force to the entire connector. Goodluck and remember to mark the convergence connectors 1, 2, 3 so they go back where they belong. They are the little white connectors that are identical.

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Convergence issue on a Mitsubishi VS-5043 50'' rear projection TV


Tunesmind, were you able to pull out that board, if so, did you pull or push on the nubs on the connector

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I replaced the high voltage flyback transformer (FUJ-34002F), and I'm also installing a new FUJ-29002C, and did not mark which connectors connect to what wires. Can you please provide me with the wiring...


The good news is with exception for the yoke plugs and convergence plugs, they all will be a diffrent shape and size so it will be difficult to get them in wrong. Just don't force a plug on if it does not fit. If your board has yoke plugs they usaly will be marked with a red green or blue mark on them, this is also true for the convergence pluggs, and the board is usaly marked with the same color.

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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.

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1 Answer

Hitachi 60" sb red and green 3d looking screen at top and bottom


Hello justright197,

I posted this in an eariler solution and there are numerous references to this type of problem on fixya.com, however it fits in this case, so here it is:

This denotes a convergence problem. Believe it or not it would be cheaper for you to replace the two convergence amplifiers and the biasing resistors. You would not actually be replacing the convergence board since these devices are usually located on the deflection board in most cases. However in answer to your question, the boards are easily removed, depending on your level of patience (lots of cables to move around), I would also advise you to either mark down all of the connection you will remove, or take pictures of the board and its connectors. If you choose to just replace the Amplifiers and the biasing resistors there is a lot of information on this site on how to do so: This will get you started:

1) Unplug the TV and then get a schematic of the TV I use http://www.servicemanuals.net or http://www.manualsparadise.com
2) On the schematic locate the STK392-xxx series IC packs (usually attached to a large heat sink)
3) determine if the STK392s are 110, 120 or 150.
4) if the STK392-xxx's are 110s replace with 110s (forget that upgrade stuff it is a hit or miss game that I don't believe you want to get into), if they are 120s replace with 120s and so on.
5)Now to replace the STKs: remove the module from the TV and unsolder theold STKs along with the bias resistors, and replace them with the newones (be sure to apply heat sink paste to the STKs when attaching them to the heatsink)
6) make sure there are no short circuits form your soldering job.
7) Reinstall the module and then turn on the TV.
8) do manual adjustment and the auto-convergence test and then things should be back to normal.


I hope this helps

Shuttle83

Feb 21, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

50HX70 picture


Hello jcside,

its not a costly repair the parts cost about $13.99 each (Convergence Amplifier ICs) Just remember you will need to change both of them. Also you will spend about $10 - $15 on the bias resistors.

Here is some advice I posted sometime ago, it applies in your case:
This denotes a convergence problem as you surmised. Believe it or not it would be cheaper for you to replace the two convergence amplifiers and the biasing resistors. You would not actually be replacing the convergence board since these devices are usually located on the deflection board in most cases. However in answer to your question, the boards are easily removed, depending on your level of patience (lots of cables to move around), I would also advise you to either mark down all of the connection you will remove, or take pictures of the board and its connectors. If you choose to just replace the Amplifiers and the biasing resistors there is a lot of information on this site on how to do so: This will get you started:

1) Unplug the TV and then get a schematic of the TV I use http://www.servicemanuals.net or http://www.manualsparadise.com
2) On the schematic locate the STK392-xxx series IC packs (usually attached to a large heat sink)
3) determine if the STK392s are 110, 120 or 150.
4) if the STK392-xxx's are 110s replace with 110s (forget that upgrade stuff it is a hit or miss game that I don't believe you want to get into), if they are 120s replace with 120s and so on.
5)Now to replace the STKs: remove the module from the TV and unsolder theold STKs along with the bias resistors, and replace them with the newones (be sure to apply heat sink paste to the STKs when attaching themto the heatsink)
6) make sure there are no short circuits form your soldering job.
7) Reinstall the module and then turn on the TV.
8) do manual adjustment and the auto-convergence test and then things should be back to normal.


I hope this helps

Shuttle83

http://www.electron-age-technologies-llc.com

Now if you think you can do this have at it, if not I would suggest that you have it done by a qualified TV technician.

Feb 14, 2009 | Toshiba 50HX70 50" Rear Projection...

1 Answer

Where is the convergance chip


thats a ctc that doesn't have a convergence chip that model dont it uses a series of amplifier transistors and buffer transistors and you may have to buy a replacement board

Apr 23, 2008 | GE 46GW947 46" Rear Projection Television

1 Answer

Replaced STK ICs but image is all distorted


Usaly when this happens the little fuses also fry they are 5 amp and located neer the ic's and at the bottom right of each ic, also they are green and look like a restor could check and see if they are open and then check all the big resistor to see if any of those show open, other than that I will paste my standard fix for this set
Everybody here seems to have basically the same problem so I will write a general fix for these Samsungs. First what you got is known as Convergence failure, A Ic or resistor, fuse or some other component has failed in the convergence circuit. So finding the service menu and trying to align the colors or spinning magnets on the CRT’s or a real bad idea of tipping a CRT or mirror would be the equitant of ripping the transmission out of your car because it had a flat tire. When the convergence fails no adjustment will bring it back, and if you do one of these stupid things then you have two problems. Now most of these Samsungs have an easily replicable board that all the convergence amplifiers are on. This can be found by removing the back and seeing if there is a board about 9 X 5 inches big and mounted to the CRT mounts, there will be 5 connector to this board. Now if your set does not have this board and instead has the two convergence Ic’s (these are about the size of a playing card and have the numbers STK392-040 on them) mount down on a board below and to the right ( this is known as the deflection board) this repair will not work for you. Instead you will need to component level repair the convergence circuit. But if you do have this separate convergence board the repair is fairly straight forward. Go to www.vancebaldwin.com or some other supplier and order BP95-00142E this is the convergence board. This board has been crossed several times through the years but this is the current version. Now once you get this board simply replace it making sure to get al the connector back in there original spot. The fire up the set and run Flash focus and for about 95% this will fix the set

Feb 13, 2008 | Samsung HCN4226W 42" Rear Projection...

1 Answer

Samsung PCJ522R Pictures is completely shaded with yellow


Everybody here seems to have basically the same problem so I will write a general fix for these Samsungs. First what you got is known as Convergence failure, A Ic or resistor, fuse or some other component has failed in the convergence circuit. So finding the service menu and trying to align the colors or spinning magnets on the CRT’s or a real bad idea of tipping a CRT or mirror would be the equitant of ripping the transmission out of your car because it had a flat tire. When the convergence fails no adjustment will bring it back, and if you do one of these stupid things then you have two problems. Now most of these Samsungs have an easily replicable board that all the convergence amplifiers are on. This can be found by removing the back and seeing if there is a board about 9 X 5 inches big and mounted to the CRT mounts, there will be 5 connector to this board. Now if your set does not have this board and instead has the two convergence Ic’s (these are about the size of a playing card and have the numbers STK392-040 on them) mount down on a board below and to the right ( this is known as the deflection board) this repair will not work for you. Instead you will need to component level repair the convergence circuit. But if you do have this separate convergence board the repair is fairly straight forward. Go to www.vancebaldwin.com or some other supplier and order BP95-00142E this is the convergence board. This board has been crossed several times through the years but this is the current version. Now once you get this board simply replace it making sure to get al the connector back in there original spot. The fire up the set and run Flash focus and for about 95% this will fix the set

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1 Answer

Sony kp-51sw500


Everybody here seems to have basically the same problem so I will write a general fix for these Samsungs. First what you got is known as Convergence failure, A Ic or resistor, fuse or some other component has failed in the convergence circuit. So finding the service menu and trying to align the colors or spinning magnets on the CRT’s or a real bad idea of tipping a CRT or mirror would be the equitant of ripping the transmission out of your car because it had a flat tire. When the convergence fails no adjustment will bring it back, and if you do one of these stupid things then you have two problems. Now most of these Samsungs have an easily replicable board that all the convergence amplifiers are on. This can be found by removing the back and seeing if there is a board about 9 X 5 inches big and mounted to the CRT mounts, there will be 5 connector to this board. Now if your set does not have this board and instead has the two convergence Ic’s (these are about the size of a playing card and have the numbers STK392-040 on them) mount down on a board below and to the right ( this is known as the deflection board) this repair will not work for you. Instead you will need to component level repair the convergence circuit. But if you do have this separate convergence board the repair is fairly straight forward. Go to www.vancebaldwin.com or some other supplier and order BP95-00142E this is the convergence board. This board has been crossed several times through the years but this is the current version. Now once you get this board simply replace it making sure to get al the connector back in there original spot. The fire up the set and run Flash focus and for about 95% this will fix the set

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