Question about Panasonic PT-53TW53 53" Rear Projection HDTV-Ready Television

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Im pretty sure ics are bad but am still able to move all convergance points but some are bowed and face colors are red

No burn marks on resistors colors are all out of wack. faces are red no fleshtones.

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Have you checked the convergence? is it just a red picture or are you getting a red outline?

Posted on Mar 26, 2008

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I replaced my convergence chips in my mitsubishi projection tv, the convergence is still out and does not move at all when I try, also there is still the bow tie - the top and bottom center pull in. Did i...


Hard to say what might be the problem, but I would be checking for the following:

a) verify all fuses (pico fuses) are not blown. They look like yellow, or green resistors typically and should be marked with some sort of "Fxxx" designator

b) Verify resistors around the STK chips are of the right value

c) Verify your soldering connections

d) It is possible the part you installed was defective. Verify you cannot move any color in any direction. (horizontal or vertical)

e) Try to verify if power is getting to the IC - if so, then likely an IC problem. If not, likely a fuse problem.

f) Finally get a schematic and verify the pinout from the STK chip to the red,blue, green connectors to ensure you did not accidently remove a surface mount resistor.

Mar 20, 2011 | Mitsubishi Projection Televisions

1 Answer

Mitsubushi VS-5043 Rear Projection,,, Replaced 3 Converrence IC's. Recovered green color. Red color is bowed. Cannot move red crosshais in convergence set up. Is their a way to reset? Could something else...


There are a few low value 1-watt flameproof resistors in the convergence yoke circuits. They typically range from 1 to 3 ohms. An open resistor will cause the respective color to be non-responsive. Also chack that you have the convergence yokes re-connected to the correct connectors on the board.

Nov 10, 2009 | Mitsubishi VS-5043 50" Rear Projection...

1 Answer

Replaced ic's but green is still seperated from the blue and red


Do not adjust any knobs as instucted in the previous thread if you TV have a convergence problem. Doing so will only make things worse. The blog does however show you how to fix other common problems with these sets.

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.

Mar 14, 2009 | Hitachi 53UWX10B 53" Rear Projection...

2 Answers

Red convergence moves up and down on screen


Your TV has gone crazy on you because your convergence IC's have gone bad.   These IC's operate at a very high temp, and usually only last 4-5 years.  
If you remove the back of the set, you will want to look for the BIGGEST heatsink in there, on that heatsink, you will see 2 lage IC's , probably STK392-110, or STK392-120's or something close...regardless - you can go on ebay to order the new ones, but MAKE SURE they are Genuine SANYO IC's and not counterfiet cheapies. the cheap ones may only last 2 months.. 
You will also need some "Heat transfer paste" - you can pick this up at radio shack.   Once you remove the old IC's, test all the large resistors near them.. pull one side of the resistor out of the board so you can check it out of circuit. they will usually have the value in Ohms, printed directly on the resistor, but you may have to use the resistor color code to find out what value they are....However, usually if there is any damage, the resistor will look like it has been HOT or fried. replace the IC's and any bad resistors, and you should be good to go. If you need to order a resistor or two, 
http://servicemanuals.vstore.ca/index.php/cName/convergence-resistors   If after replacing the IC's and any defective resistors, the convergence is still bad, make sure to use a multimeter to check ALL fuses on the boards, --- sometimes when the IC's go, they will take out a fuse to the convergence power supply. If you find any bad fuses, replace them accordingly!   If this STILL doesnt make it look right, you will need to find out how to get into service mode and do a coarse convergence adjustment. This information can be found in the Service manual for your set. If you dont have one you can download it at manualuniverse.com
Hope that helps!

Jan 21, 2009 | Philips 55PW9363 55" Rear Projection...

1 Answer

Cannot adjust convergence on Mitsubishi RPTV


as long as there is no bowing in the picture and the color does not want to move then there is probably just a bad resistor on the convergence IC that controls the color alignment , thus the resistors would have to be tested to find the low valued resistor on the IC

Nov 28, 2008 | Mitsubishi WS-55809 55" Rear Projection...

2 Answers

Color convergence on Hitachi Projector TV


The color has gone crazy on you because your convergence IC's have gone bad.
These IC's operate at a very high temp, and usually only last 4-5 years. 
If you remove the back of the set, you will want to look for the BIGGEST heatsink in there, on that heatsink, you will see 2 lage IC's , probably STK392-110, or STK392-120's or something close...regardless - you can go on ebay to order the new ones, but MAKE SURE they are Genuine SANYO IC's and not counterfiet cheapies. the cheap ones may only last 2 months..
You will also need some "Heat transfer paste" - you can pick this up at radio shack.
Once you remove the old IC's, test all the large resistors near them.. pull one side of the resistor out of the board so you can check it out of circuit. they will usually have the value in Ohms, printed directly on the resistor, but you may have to use the resistor color code to find out what value they are....However, usually if there is any damage, the resistor will look like it has been HOT or fried. replace the IC's and any bad resistors, and you should be good to go.
If after replacing the IC's and any defective resistors, the convergence is still bad, make sure to use a multimeter to check ALL fuses on the boards, --- sometimes when the IC's go, they will take out a fuse to the convergence power supply. If you find any bad fuses, replace them accordingly!
Hope that helps!

Nov 24, 2008 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

Convergence


Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929
Or send to ptscorp.com
http://www.hdtvoice.com/voice/index.php?s=
good luck
please mark the post with a fixya

Feb 24, 2008 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Hitachi 53UWX10B 53 convergence color lines dont move w\RC


After replacing IC's, double check the solder connections for bridging or no solder on pin(s). Check all bias resistors (low ohmage). Make sure you have your VCC voltage, should have a positive/negitive voltage of about 24 v on each IC and +38v.Also, make sure all cables are plugged in and fully seated

Note: All bias resistors are very low ohms eg; 3.3, 1.8, 2.2 make sure correct value, very important.
If can't adjust still CPU digital convergence board (near ic's) shielded may be defective.

Feb 23, 2008 | Hitachi 53UWX10B 53" Rear Projection...

3 Answers

Double IMAGE of RED


Do not adjust any knobs as instucted in the previous thread if you TV have a convergence problem. Doing so will only make things worse. The blog does however show you how to fix other common problems with these sets.

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.

Oct 14, 2007 | Hitachi 43FDX15B 43" Rear Projection...

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