20 Most Recent Sony KP-57HW40 57" Rear Projection Television - Page 2 Questions & Answers

Image curve, it seems tv got problem with convergence output ICs failure.
Do you get off color picture or like 3 pictures in tv screen?
Is it Sony KP-57HW40 rear projection tv?
Let me know above info to provide you helpful info to solve this issue.

Sony KP-57HW40... | Answered on Aug 04, 2012

This model and some others had bad picture tubes that are no longer available---there is an option here.

If screen gets bright red, green, or blue set will shut down as it detects too much current being drawn.

Seen over 100 with this issue--what can be tried and usually will help is a physical adjustment inside the set.

No parts to replace and takes about 15 minutes to do.

I can tell you how if you want to know.

Sony KP-57HW40... | Answered on Jun 14, 2012

You need to replace the two STK-392-560 CHIPS THIS SET USES AND DO NOT RUN THE SET WITH CONVERGENCE BOWED or soon you will have other parts bad.

Sony KP-57HW40... | Answered on May 28, 2012

I can assist here--if the model here is correct this set uses two of the stk-392-560 chips---they will be on the deflection board--see photos.

involved is getting the board up (do not need to remove) and some fairly tricky soldering--parts cost should be under 30 dollars--SUBURBAN ELECTRONICS--is place I buy from.

Requires some mechanical skill and soldering skills--willing to help but the question is are you able?

above chip is typical and there will be two with different number than this one.


Again, a similar photo and not exact but chips will be on the sink with fins that looks somewhat like this one.

Sony KP-57HW40... | Answered on Apr 27, 2012

Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then yourconvergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

  • 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.
  • TV shuts off after powering on. The power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


69189a5.pngSOLUTION #1

What you will need to do is convergence. You can get a repair kit fromTvRepairKits.com . It includes replacement parts,step by step instructions, support, etc.

Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

TV set after fluid change



What you will need to do is replace the coolant and clean the crt. You can get a repair kit from TvRepairKits.com . It includes replacement coolant,step by step instructions, support, etc.

Sony KP-57HW40... | Answered on Mar 18, 2012

How many flash?please count..

after that you can go to this link www.fixya.com/users/bugoy31..

choose any of my services to help you fix it as much as possible..

Sony KP-57HW40... | Answered on Feb 04, 2012

One of two problems you have.

One is if you go to a unused video input, you should only see the video input number in green, ie video 1 etc.

If you see some blue in the background or faint curved lines you have a screen problem--it may be adjustable and I can tell you how.

Second, these sets rarely have intermittent convergence problems: Picture will look 3d in some way red, green or blue outlines etc.

Let me know which you have and I will help.

The model is more prone to the first problem than the second. Reply to this post with a comment if you need my help.


Sony KP-57HW40... | Answered on Jan 04, 2012

I have first some information for you and then a possible solution.

A lot of these sets had problems with the 3 picture tubes---blue seems to be the most common--if you go to a unused video input and see anything other than Input 1 etc like blue background or even blue curved faint lines do not despair.

There is a fairly easy way to adjust this (not with the remote) I can tell you the procedure and it requires no parts and only moderate skill.

May I assist you here?


Sony KP-57HW40... | Answered on Nov 25, 2011

is 30% chances that only the power suply is broke, and after a lightning ...is beter to go to a profesional repair shop and check it there.

if the power suply is external before u go to a serice u can try whit a power suply that got same V and A

best regards.

i dont wana upsad u but prepare for worst

Sony KP-57HW40... | Answered on Sep 22, 2011


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

The blue CRT has shorted and will need to be replaced. You should be able to get a replacement blue CRT from www.tvrepairworld.com

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


It's the problem of overheating in the power supply board of the TV.on the power supply board of the tv there are few capacitors and IC.any of this ic is got short or may be weak.so due to this when you start the TV the current passes from electric outlet to the power supply board of TV.but when the current passes from that weak/faulty part at that time current gets stopped or slow and the board overheats and TV shuts off. this is a common problem faced by many other users too.the possible option to solve this issue is to check the power supply board by a meter and continuity tester and replace the faulty component on the board which is short due to which power supply board is getting overheated.its bit technical job but yes its not at all a costly repair to do or get it done by the technician. for required parts it can be easily available from local electronic hardware shop. if otherwise, power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
Hope this will help to solving the problem...

Sony KP-57HW40... | Answered on Aug 27, 2011

The Blue CRT has shorted and will need to be replaced. www.tvrepairworld.com should have replacement CRT assemblies for your model.

Sony KP-57HW40... | Answered on Jul 17, 2011

Thats the error for having a issue with the +5V which can be caused by either the A board or the B Board with the B board being the most likliest cause.

Sony KP-57HW40... | Answered on Jul 09, 2011

It may be the CRT drive board which is attached to the bottom of the Blue CRT. I would check that Board for signs of being burnt it may need to be replaced.

Sony KP-57HW40... | Answered on Jul 08, 2011

These sets had alot of problems with bad FBT flyback tranfomers,You might need to change FBT.
Heres another thing they also had Bad Picture Tubes that will blow hori output and you will not know its the Tube untill you replace the FBT.Use a high voltage probe to monitor Voltage coming from the anode button, if you dont have a HVP then disconnect the CRT board and monitor set.

Sony KP-57HW40... | Answered on Jun 26, 2011

replace the Red CRT you can get one from www.tvrepairworld.com

Sony KP-57HW40... | Answered on Jun 11, 2011

most likely the blue gun is shorting out, or the ic on the neck board is defective,
or u can try turninr down the screen control for the blue gun
the controls access via the front panel,pull speaker grill off screws on sides or at bottom of grill
remove plate togain access to block of 6 controls, 3 are focus and 3 are screen brightness
center up/dwn are green
left up/dwn are red
right are blue

Sony KP-57HW40... | Answered on Apr 01, 2011

That could be caused by a faulty green tube or a video output fault.

Sony KP-57HW40... | Answered on Mar 30, 2011

there is nothing that i know that can fix a large sratch on a tv. you could buy a new screen from www.TvRepairKits.com but it will cost around $120 because it will cost the shipper around $80 Fed X, $100 for some others.

Sony KP-57HW40... | Answered on Mar 09, 2011

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