20 Most Recent Sony KP-57HW40 57" Rear Projection Television - Page 3 Questions & Answers

This is the site you need:

They come with instructions on how to repair the circuit board :)

Hope this helps :)

Sony KP-57HW40... | Answered on Mar 07, 2011

ur power board coverter it dead.
Need to be replace.

Sony KP-57HW40... | Answered on Feb 28, 2011

HI, There is still problem with your Tcon. If previously this done by repair shop, just return it back ( consider this repairing in not done).

Sony KP-57HW40... | Answered on Jan 19, 2011


Hope this link helps................

Sony KP-57HW40... | Answered on Jan 04, 2011

You have a problem in the convergence circuit and both convergence output chips need to be replaced.

If you are able (it requires soldering etc) I would be willing and able to tell you what parts and other things are needed. Parts cost should be under 30 dollars total on EBAY.

Let me know if I can assist you.


Sony KP-57HW40... | Answered on Dec 30, 2010

there is a major fault in the main circuit board (pcb) and needs to be fixed its not a fuse it not a reset problem its a dynamic fault that could be from a bad resistor to a downed capacitor if you have knowledge of these components then check them using a multimeter find the faulty parts and replace accordingly. but if you have no idea then it will need to go into the repair shop. a lot of our customers ask us if the unit (tv) etc after being fixed will be any good or should they buy a new one. a good tech will fix the unit and in most cases it will be tweeked and work better but always get a quote up front and hold them to it within $50.00

best of luck to you

if you need further advice please feel free to email us at [email protected]

merry christmas

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Sony KP-57HW40... | Answered on Dec 22, 2010

call sears they charge $99 to come out free estimate. mine cost $300 and works great

Sony KP-57HW40... | Answered on Dec 19, 2010

The "D board" is the flyback transformer, but if it was bad, you would have no picture at all. Here is a proven method to get it to work (for a while....)

The adjustment method is to put the set on a video input with nothing conected
to that input. Turn the screen control up slowly until those fine lines appear
and then down until they just disappear. Do this with all three colors. You
might need to turn one of them down a little initially if the set won't stay on
long enough to get to adjustments. You cannot do the adjustment on a TV station
or on live video input. If the adjustments are too high, the set will turn
bright and shutdown. If they are too low you will never get a picture at

You would want to touchup the adjustments after a warmup of a few
hours, then recheck the next day when cold.

If the adjustments are
successfull and the set stays on but the color reproduction is very poor then
one of the tubes is probably bad.

If you are lucky and everything turns
out OK, you will probably need to do it every year or so.

Sony KP-57HW40... | Answered on Dec 01, 2010

Check pico fuses in front and behing STK ICs STK392-110s Pico Fuses look like resisotors only they will be Green or Yellow 5amps,6amps 7amp pico fuses.

Sony KP-57HW40... | Answered on Nov 29, 2010


You most likely have a defective convergence output circuit. You could try to enter into the menu and see, if the adjustments could help. Unless, you need to get the TV repaired.There are two large IC's on that board, and the part number for both of them is STK4278L. You will also have an open fuse on this board, F901, a 3.15 amp GMA slow blow fuse. Both IC's should be replaced along with this fuse.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Sony KP-57HW40... | Answered on Nov 26, 2010

Auto Focus button no longer work.Tv have a problems known as a convergence problems,it dead.Tv have colors lnes R,G,B mis alignment,have colors shadows pictures or 3D pictures look alike.The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts,must be replaced on the tv convergnce board to solved the tv pictures convergence problems.The shop,will cost u like $300-350 for parts and labors.

Sony KP-57HW40... | Answered on Nov 13, 2010

It starting to died.It will happen for good.The tv have a problems known as a convergence problems,it dead.The tv colors lines R,G,B mis alignment,have pictures colors shadows or 3D picture look like.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced to solved the tv convergence picture problems.The Shop,will cost u $300-350 for parts and labors.

Sony KP-57HW40... | Answered on Oct 20, 2010

You have a problem with the CRT's - either they are used and need to be replaced (most likely on a tv of that age) or the video final module is failing. 
Open the tv, set it on an blank channel and check the voltages on the CRT: if the voltages are steady and equal then the tubes are worn out; if they are different from each other and variable then the video final module has failed (or is about to) - fix it.
Either way it's gonna cost you around $350.

Sony KP-57HW40... | Answered on Sep 15, 2010

This is one of a group of sets with bad picture tubes. If screen goes to mostly blue there is a way to attempt to get around it.

The tubes are expensive and only available on a rebuild basis.

I can tell you how to try in less than 10 minutes to adjust to compensate for the problem.

Do you want to know that to try/

I f this helps, rate this solution as very helpful as I do this here for free.


Sony KP-57HW40... | Answered on Aug 26, 2010

This symptom comes after convergence output ICs failure in rear projection tv. Replacement of convergence output ICs (usually two ICs) will fix the picture problem.
Let me know if you are handy with electronics stuff repair, can remove and install parts in circuit board with proper tools and wish to replace defective ICs in tv to provide you more technical info.
And if you are not comfortable working in tv circuit boards then local tv repair shop will help you because it requires expertise.

Sony KP-57HW40... | Answered on Aug 03, 2010

Install the Repair kit called the Sony type 1 convergence repair kit from www.tvrepairworld.com the kit contains the parts and the CD with instructions.

Sony KP-57HW40... | Answered on Aug 03, 2010

Sony TVs has an Optical Block issue. If there is an issue with the optical block, then there will be green, blue patches or tint on the TV display. Try resetting the TV to the factory settings and try Power resetting the TV. Turn Off the TV and remove the power plug from the wall outlet for 1 minute and reconnect it and check the operation. If the issue still persists, then TV may require service. You can contact the Customer relations team and check for the available options. Sony had repaired free of cost for such issues. Hence, contact the customer relations.

Sony KP-57HW40... | Answered on Jul 28, 2010

Try connecting the TV directly to a different wall outlet and check. If the issue persists, try power resetting the TV. Turn Off the TV and remove the power plug from the wall outlet for 1 minute and reconnect it and check the operation. If the issue persists, then the TV requires service.

Sony KP-57HW40... | Answered on Jul 28, 2010

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