Question about Sony KP-53XBR300 53" Rear Projection Television

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Suggestions I get sound but the screen does not come on.How do i check and see if maybe the bulbs went out. Or someone mentioned the convergance IC?

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  • Yobes Feb 28, 2008

    Alright thanks for the help I will try looking at those this weekend.

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  • Sony Master
  • 8,617 Answers

The Convergence ICs will only distort the picture. Youre having deflection problems. I would check the horizontal and low voltage regulators.

Posted on Feb 24, 2008

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WS-55909 convergence problem turns now into F9A04 Fuse issue


I had this happen on my WS55909 about 2 years ago. I dont remember what the circuit id's for the fuses were, but out of 6 fuses on the middle board, the two in the middle were blown. I traced the circuit schematic and found that only the convergence IC could cause these fuses to blow. It sounds like you already put in a new convergence IC (the one with the big-*** heat-sink which probably also needs a fan) but you need to make sure all those fuses on that board are still good. After I replaced that IC, my TV still didn't work. I went and double checked for continuity of all the fuses on that board and one was blown (after checking all of them and replacing the IC). Replaced it and the TV has worked ever since. Total repair cost was 23 bucks. Professionals recommended that I would be better off just buying a LCD TV than fixing my rear projection TV, but I still dont think you can get one of those as big as 55" for only 23 bucks! ****. BTW, mitsubishi would probably tell you otherwise, but you don't have to use those "littlefuse" fuses. I soldered in a fuse-holder for a glass fuse of the same value (5amp 125v in my case) that can be purchased at radio shack. A fuse is a fuse. My TV never burst into flames.

Apr 06, 2010 | Mitsubishi VS-50501 50" Rear Projection...

1 Answer

Convergence IC + Resistor swap = Blue light clicking noise


Good Day,
It sounds like you may have slightly diconnected a cable. Look for the large RED cable/wire that goes to the Blue tube and make sure that they are very secure. When doing this make sure the TV is off.

Good Luck, BIG IRISH.

Dec 16, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Convergence and distortion problem.


This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

Oct 31, 2009 | Panasonic PT-47WXC43 47" Rear Projection...

1 Answer

My set is 10 yrs old. In the upper left and lower


Try adjusting the convergence. If it won't move see below- red IC in particular
This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

Oct 18, 2009 | Sony KP-43HT20 43" Rear Projection...

1 Answer

IC replacement didn't solve convergence problem for 57HX83


the convergence in any tv is as this analogy:
a pencil, a hand and the brain.
i would say the pencil is the joke and the ic (convergence amplifier) together.
the hand is a copy of a program that always do the same.

and the brain has an original program plus the eeprom to help him.

and what ?(maybe you can say)
  • dont worry about the brain first.
  • repair the conergence (three rectangules in the screen ***maybe not matching*** red blue and green) but perfect rectangule
Pencil:
To make this in your tv maybe you have +/-20 v maybe missed. the IC convergence amplifier damage. all resistors o some burn or different value or need new amplifiers. fixing this you get your rectangule.
Hand:
is easy to know in the copy of the program is corrupted first because the screens are miss matching that make some areas look as colored color Shadows but at least you can adjust up down east west each color in any point with the simple users menu. (you dont save in memory but your tv now looks now good adjusting here. but next day: bye bye adjustment.
the brain.
if your tv need this kind of solution. you need first to know how to navigate inside the manufacure native program. and second this kind of repair is so critical that you need to buy the parts that maybe have not program at all. and you need to download that with manufacture original program and make sure your program corresponds with the version of that particular tv (dont worry most of the time the program it shields perfect so most of the time you dont lost it, (but the don't even thing to start to dig in that area, better take it easy and resolve it in the other steps). good luck!

Apr 18, 2009 | Toshiba 57HX83 57" Rear Projection...

1 Answer

Convergence way off!


Yup, you lost convergence. The only fix is to repair/replace the convergence IC. Some techs will just replace the whole video board.

Nov 13, 2008 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

KP-53XBR45, Sound OK, but no picture


You may have a bad convergence... short will shutdown your HV circuitry leaving just audio?
It has no bulb to change?

Oct 29, 2007 | Sony KP-53XBR45 53" Rear Projection...

3 Answers

No power just a chirping noise.


Chirping means the power supply is being loaded down by a short in most cases, likely a bad convergance IC
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Oct 21, 2007 | Philips 60PP9352 60" Rear Projection...

1 Answer

PT-47WX53 blue convergence PROBLEM


Sounds like you have a blue foldover in the convergence. Since tv has been worked on it could be bad ic, maybe not original, generic. I would say if you can open set and look in, look for the blue it should be marked. look for a loose connection. If you can have someone to gently tap around that blue amp and see if it moves are go away, it might be a simple loose connection and needs soldering. If not then my have to change ic again. Becareful cause set would need to be on to really check. Hope this helps.

Aug 15, 2007 | Panasonic PT-47WX53 47" Rear Projection...

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