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

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Re: thanks I do not want to go through the soldering trouble again. So how much would it cost if I just replace the whole board (with new IC's and resistors on it), I can install it myself. Also where can I purchase the board?

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  • Panasonic Master
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Those boards are no longer available through panasonic. The only option is to have yours rebuilt. The link I provided for the resistors do rebuild boards you may want to leave them a email with your model number and mention its the A board. I am not sure of what the cost would be , But I do know that board was 485.00 when panasonic had them still available, as quite a few of my customers needed that signal board for that same chassis.
Heres that link again
http://servicemanuals.vstore.ca/

Posted on Jun 27, 2008

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It looks like the picture is in 3D. How do I fix this?


Hi mmoir333,
If the symptom can't be fix by convergence set-up from the tv through your remote control then the trouble is internal and it is caused by bad convergence board. The most commonly faulty parts in this board is the convergence chip/IC. Once replace by IC/Chip your unit will back to normal again. Also you have to check for open fuse/fusible resistor in line with its power supply. Bad solder joints will do the same problem, I would advice you to re-solder first on that board and spot some cold solder.

If you don't have necessary tools and test instruments, and can't do the job yourself, I would advice you to look for a professional to troubleshoot the problem. Don't attempt to work internal if you don't know the safety precaution of handling it, there some stored electricity enough to hurt you with a little mistake only.



Hope I helped you.

Have a nice day!

Thanks for using Fixya.


Feb 17, 2011 | Hitachi 61SDX01B 61" Rear Projection...

4 Answers

Convergence IC"S


not unless you damaged the board, & theres no part of it have to be soldered and circuit is damaged, then it could be needed a new board.. but try to check if theres something to correct into your soldered parts and correct it again using a soldered pump to remove the bad solder.

thanks

May 02, 2008 | JVC AV-65WP74 Rear Projection Television

1 Answer

I have a ws 65857 with a picture problem. Intermittently the picture will bow down from the top and up from the bottm. It does not do this from the sides. There is a color separation in the distorted areas...


Hello, you will need your soldering skills for this one. Try to locate the convergence IC(usually mounted on a heavy aluminum heat dissapator) since this is a mitsu TV I would look for this in the middle board if you have three boards mounted horizontally to the bottom of the service area. The IC or ICs will have a number that start with STK and some numbers, exmple...stk392-110, when you do locate the determined IC, you will have to do some unplugging, make sure you make a diagram of what plugs go where, because you will have to work on the board from the printed circuit(solder side). Once you have the board in a servicing position look under the convergence IC or ICs, you will find several pins that are loose, I would resolder all of them and also look around the whole board to check for other problem areas that might give trouble later. Good luck.

Nov 06, 2010 | Mitsubishi WS-65857 65" Rear Projection...

2 Answers

Samsung HCP4752W convergence board?


I couldn't decide whether or not to attack the IC Chips or the whole board, so I took out my S&W model 59 and pumped 11 9mm rounds into the whole chassis! Sets works as new as long as 'new' means comes with 11 bullet holes in chassis.

May 12, 2009 | Samsung HLN437W 43" Rear Projection HDTV

1 Answer

Picture bends in different colors


your Convergence IC chips and resistors arre failing you need to replace them

below is a general disscussion post for a Philips TV which will help you to understand your situation and what you might need usally you will need (2) IC convergence Chips and usally (12) Resisitors what have to be soldered onthe the board after you remove the old ones. this fix usally cost you to do it yourself $30, to have a repair man do it cost around $300-450 a new board if avalible usally costs $250-300

Sorry, for the bad new I hope you have a friend that knows how to work on circuit boards...
good luck,

below is a general post about a philips TV Convergence problem you can read about keep inmind your CHIP and RESISTORS will proball be different type....

you need 2 Convergence IC's STK392-120's (120's and 150's will work) of course order 2 of the same type I'm using replacement 150's they allow for a little higher heat and were cheaper ALSO you need to replace the 12 resistors with 6.8 ohm metal film resistors, make sure they are metal film! don’t skimp out here I did and then they blew and fried my IC's and I had to replace everything again!

Great reference link that I posted
pictures on, check out page 3
http://www.techlore.com/forum/thread/16736/Magnavox-51MP392H-17-51-quot--TV-has-double-vision/

Where I got my parts that worked:
Suburban Electronics
http://www.suburban-elect.com/
Manual Library you should find all you need here:
http://www.techlore.com/group/2/list_downloads



What you need:
(2) STK392-120 OR STK392-150 IC
chips
(12) 6.8 Ohm Metal Film resistors
set of star screw drivers
15 watt pencil solder pencil, DO NOT use a high watt iron you will fry the surface mounted item.
good leaded solder, and flux

Nov 20, 2008 | Mitsubishi WS-65909 65" Rear Projection...

1 Answer

SAMSUNG HCM4215W Rear Projection HDTV shuts down


Low ohm resistors are open or poor solder connections on the bottom of a convergence IC.

You need to look at resistors in good light with magnifying glass. Bad ones may show as discolored or burnt.

The repair needs someone that has the schematic for the convergence cct, and can replace the burnt resistors or replace the whole convergence board.

http://calgaryconvergencerepair.weebly.com/index.html

If you are near Calgary, call me, if not, find someone that has done it before, preferably many times.

easyab

Aug 12, 2008 | Samsung HCM4216W 42" Rear Projection...

2 Answers

Bad Solder


I don't know if you can buy the boards anymore, ive always replaced the IC checked the resisters, i can point you to two websites that have instructions.
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
i would also replace the IC with the stronger ones stk392-180's and i would replace both no matter what.

Dec 10, 2007 | Hitachi 53UWX10B 53" Rear Projection...

4 Answers

CONVERGENCE PROBLEM IN TOSHIBA 43H70


Hello Renee, You have a convergence problem, but you are adjusting the wrong system. You need to adjust the convergence rings first ok You need a dot and crosshatch generator to properly set convergence for this set. Connect the generator set the TV to channel 3 and turn on the generator set it to dots adjusting the convergence try to get the center dot RGB all together and then adjust for the outer edges using the convergence board. the use the crosshatch to adjust convergence along the lines of the crosshatch pattern. Remember use the rings first and the the convergence board adjustments.

Sep 24, 2007 | Toshiba 43H70 43" Rear Projection...

7 Answers

HC-P4752W - IC Replacement vs Convergence Module.


The colors weren't lining up correctly on my HC-P4752W which is only about 30 months old. I did a little bit of research and got ahold of the people at http://servicemanuals.vstore.ca/ They recommended replacing the IC's as well as the IC resistors. I purchased the replacement parts from their site and made the repairs myself. I should mention that I didn't have any previous soldering experience. The repair was easy and a complete success. You may find replacement parts elsewhere for slightly cheaper but what you won't find is the prompt and detailed customer service that they provide. They gave me there # and said to call if I had any questions before or during repair. I took advantage of their services and got answers every time I called.

Aug 11, 2007 | Samsung HC-P4752W 47" Rear Projection...

7 Answers

Panasonic PT-47wx53, No power, 3 Blinks


Panasonic PT53WX42F with same problem. 3 blinks after power on for a few seconds, no picture or sound. Solution: replaced two convergence ICs (STK392-XXX) located on the large green printed circuit board. ICs are very large and screwed into two large heat sinks and soldered to board. Cost is approximately $6 each. Easy to replace if careful. May be able to access solder joints on bottom of board by removing screen on bottom of cabinet or simply remove 4 screws that anchor plastic holder to cabinet and tilt up. I did not disconnect any inter-board connections. Remove heat sink screws. Desolder using suction bulb or solder sucker. Works great. Finish off with solderwick braid if necessary to clear holes. 40 watt iron is enough do not apply too much heat to damage board lands. Remove IC. Clean heat sink by scraping away white heat sync compound. Apply generous amount of heat sync compound to new IC and coat evenly. Align and insert new IC holes, resolder with thin resin core solder being careful not bridge lands. Refasten to heat sink. Clean board and inspect for good joints and no bridging. Refasten plastic board holder. Carefully clean projection lenses while back is off tv. Power up and it should be fixed. Parts are obtainable on-line. Solder tools and board cleaner are available at Radio Shack or on-line also. I spent $20 on parts and supplies. This is not hard just a bit tedious. You can do it.

Jul 31, 2007 | Panasonic PT-47WX53 47" Rear Projection...

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