Question about Sony KP-65XBR10W 65" Rear Projection Television

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Failure of convergence

We are attempting to correct the convergence. The auto convergence is not working.

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  • Sony Master
  • 3,459 Answers

Below are two of the most common problems encountered with projection TV sets.

Problem #1 - CONVERGENCE PROBLEM

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 your convergence is broken and needs to be repaired.

This is a very common failure on Projection TV sets and a fairly simple DIY fix.

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 - TV may also make a chirping noise.
Here are some photos of convergence problems.


failure of convergence - 1d5e2cf.jpg


ff5b9f6.jpg
7deade1.jpg

Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a solfailure of convergence - 47a7bc4.pngr>47a7bc4.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.

This is a a fairly easy DIY job if you know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from TvRepairKits.com

Their kits include a step by step instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Problem #2 CRT Fluid is Cloudy

Projection 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 video.

Pic of a set that needs the fluid changed. Notice how dull the colors are and how white the screen looks. The screen may also look red, orange, dufailure of convergence - 7c190d8.jpgr>
BEFORE

7c190d8.jpg

Set after fluid change. Notice how bright the colors are now. Everfailure of convergence - a798d23.jpg crisp and sharp again.

AFTER

a798d23.jpg



724bcba.pngSolution #2 - CRT FLUID FIX


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.

Posted on Apr 19, 2013

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1 Answer

Is there a way to manually adjust the convergence on a Hitachi HDTV modol #43FDX15B?


Hi James,

If Auto Focus (Auto Convergence) won't complete the set-up stop trying to adjust it. There is a fault in the convergence circuit!! ICs have to be replaced and maybe some burnt resistors.

If you access the service set-up menu and try to adjust the "defective" circuit the Auto-focus may not work correctly after the IC's, etc are replaced. Experienced technicians know that the service menu allow easy resetting to correct the misalignment, etc. "First Time" technician can be easily misled, waste a lot of effort and never get a correct picture.

If you want to attempt the repair, buy the correct parts from a service guy that does this type of work. I suggest having the repair done by a local competent technician that is experienced with Hitachi Convergence Problems. It is considerably more challenging than changing a fuse.

Our Convergence Gallery shows a variety of Convergence Faults. If you live in Toronto, ON., Calgary, AB., or Vancouver BC. it costs $257 for Hitachi in home convergence repair.

Good luck.

Robert

Nov 17, 2015 | Hitachi Televison & Video

1 Answer

I have a 53 inch hitachi ultravision #53UDX10B Its out of focus and when you press the magic focus button it trys then pops up with the # 4 in the corner is this a convergence problem or what ?


Yes, you have a convergence failure. Usually requires replacement of 2 X STK ICs and any burnt resistors associated with the function that is faulty.

Look at the user menu and compare with images on our Convergence Gallery. Try to adjust in the convergence adjust menu. Identify the functions that do not work and make note. When you replace the ICs, pay special attention to the low ohm resistors for the non-working function. They will be located near the colored plug associated with the non-working function. If red vertical will not adjust, check resistors near the red plug.

There are many posts and websites that offer "new and improved Convergence IC substitutes. My advice is to use the original part numbers and replace any burnt resistors with original values. Many ICs purchased on the Internet are very poor quality and do not work. Many users get substitute replacement ICs and never get their TVs working again.

If you have other electronics repair experience, this job may be done with some chance of success. If you have no experience, there are many secondary problems that can and usually do appear. Determining how to fix the secondary faults and how to correctly align the TV is difficult without prior convergence repair experience.

Some of the common problems encountered are:
1. Poor solder techniques, resulting in damaged PC boards or poor solder connections.
2. Poor quality or wrong parts installed and recognizing this problem.
3. Resistors open or burnt. Some resistors are weakened by the initial faulty IC. Replacing with a "good" IC and starting the TV causes the weakened resistors to burn up. IC may be ok but there are one or more open resistors that measured ok when ICs were being replaced.
4. Wrong ICs used, causing resistors to burn up.
5. Resistors that measure normal and become faulty when heated by current flow.
6. Recognizing that convergence circuit is repaired correctly and alignment is needed.
7. Major alignment in service menu required because data is corrupted by multiple tries of magic focus or manual adjustment while faulty circuit conditions exist.
8. Major alignment required because user adjusted centering rings or physically changed mechanical focus adjustment, then mis-adjusted convergence settings trying to correct mechanical alignment faults.
9. User has not connected plugs and connectors correctly and caused secondary damage or mis-alignment trying to correct secondary issue.

Physically replacing the ICs may appear simple but recognizing if a fault still exists or if correct repair is required causes many attempts at repair to fail. Keep it simple. Replace with good quality original part numbers, measure suspect resistors and adjust only what is necessary.

There are only 3 things to fix, IC failure, resistor failure and user induced secondary faults. Data processor and memory is bulletproof.

easyab

Apr 22, 2010 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Tried to auto adjust the guns, will not come within range


Hi Tod,

If colors do not align correctly, most likely you have a convergence failure. This requires replacement of the 2 STK ICs and possibly some low ohm resistors.

Some Toshiba have a Horizontal oscillator/Drive IC failure that results in a small or shrunk picture (2-3" border on all sides). The 3 colors do not align properly because of the reduced Hor drive signal. The convergence adjust controls will work but not allow good adjustment. Convergence is ok, Hor Drive signal is incorrect.

Many do-it-yourselfers mistake the Hor Drive problem in Toshiba RPTV with convergence failure. Too much adjustment of the convergence controls may cause the saved data to be really messed up and require more difficult alignment in the service mode.

If minor or simple adjustments in the customer convergence adjust menu do not fix your problem, there is a fault. Stop adjusting until fault is repaired

Convergence failure can be accurately identified with the Convergence Gallery on our website. Service in Toronto, Ottawa, Calgary, Edmonton and other Canada cities.

easyab

Apr 21, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

Color convergance from bottom of screen


PT-47WX53 - Visible Convergence Fault

You need to open the TV. Remove the deflection printed circuit board, access and replace the convergence ICs. Maybe some low ohm resistors are burnt as well. Change those too.

Make sure you do not do any damage to the connections or foil on the printed circuit board. Don't crack the board while breaking loose the ICs.

Also be careful to re-connect all the plugs and the inter-connects between the boards. Don't damage the plugs or connectors. Make sure you put them all back in the correct sockets.

After replacing everything and re-assembling, turn-on and stand back. Look for smoke. If no smoke, look at the picture and see how you have done. Use the auto-convergence if it is available auto-convergence should adjust the convergence grid to an acceptable level. Usually minor touch-up of user's manual convergence adjust screen is all you need to get a good picture. If the customer controls or auto-focus do not work correctly, you have not completed repair.

Do not attempt accessing and fiddling with the service screen unless it is absolutely required.

If there are still problems, get professional service help. Many of the ICs sold by the discount "Shopping Cart" One Stop Kit sites are bogus. They do not work.

Many times consumers buy the New and Improved" IC kits that are offered. Don't even think about it. All low ohm resistors will have to be changed. Many opportunities for damage and misadventure. Your Upgrade kit supplier is re-designing the TV that Panasonic spent millions of dollars perfecting.

Many consumers try to do a convergence repair and TVs become scrap. Check out the TV help blogs, most start with "I installed a set of ICs I purchased on the web, changed resistors as well, Now the TV has a poorer picture than before or it will not start."

If you have no electronics experience or training the chances of success are similar to do-it-yourself brain surgery in a Peruvian jungle with a sharpened arrowhead.

Call local service that knows your Panasonic TV. Ask for price before he comes out. If he won't give a firm estimate for on-site "convergence" repair, call someone else.

Call me in Canada, I'll give you a price.

easyab



Mar 14, 2010 | Panasonic PT-47WX53 47" Rear Projection...

2 Answers

I have a 47" panisonic rear projection tv. the tv is blurry double vision. The red has shifted to the right. The left side of the screen had less double but as you scane to the right it gets worse


It sounds that TV got convergence out IC failure, please replace convergence out ICs (two in this TV) for correct picture.
Required ICs are available in Part Store.
Thanks.

Oct 21, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Purple/Green Outline surrounding picture


I have seen two different things cause this. The first and most common is the electrical failure of one or both convergence IC's. A handful of times, the data in the DCU became corrupted and I was able to enter the service mode, go to manual convergence and correct the one location that was off.

Apr 28, 2009 | Toshiba 50HDX82 50" Rear Projection...

1 Answer

Toshiba cinema series convergence problem


If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/ Convergence adjustment procedure to many brands of projection TVs are given in detail.

Jul 10, 2017 | Toshiba CX36F84 TV

1 Answer

Convergence Problem


I'm not a 100% positive this would fix your TV, but I found the convergence board on PartStore.com for about $80. Hope this helps.

Nov 16, 2007 | Akai PT5598HD 55" Rear Projection...

2 Answers

JVC A56P575


In the customer menu page thru it until you come to a page that has an item called convergence. move the cursor down to hightlight this and press enter. The next screen will have an Auto on the top line and a Manual of the second line. Hightlight the auto and press enter. The TV will attempt an automatic convergence alignment. BE WARNED>>>It will either correct it or make it worst. If it gets worst then the TV's convergence circuit has aged and is starting to fail. If it corrected it it's the same aging but not as bad, YET. If there is no change or it got worst then you will need to have the TV serviced preferbly by an authorized JVC service center because they have access to the service literature and buttetins.

Oct 08, 2007 | JVC AV-56P575 56" Rear Projection...

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