Question about Hitachi 53FDX20B 53" Rear Projection Television

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Hitachi 53FDX 20B: Convergence ...new Sanyo IC's installed

Hitachi 53FDX 20B: Convergence problem...This is what I have...in trying to complete the touchup alignment, i do not have the cursor position indicator, i can only adjust red in the center of the screen, cannot switch to blue, and when i run magic focus, i get a code 5 error which states to check convergence yoke return resistor values (which resistor is this? Others I need to check?)

Thanks for your help.

Sammy

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  • Hitachi Master
  • 3,459 Answers

You need to fix the convergence chips 1st.

This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:


  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms

  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

Hitachi 53FDX 20B: Convergence ...new Sanyo IC's i - bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Posted on Feb 03, 2010

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I own a kp-51ws520 51 in rear projection hdtv-ready and the flash focus does not work. are there convergance chips in this set. If so what is the part number


If your colors are not lining up on the picture try to use the customer convergence menu to line up all of the colors.
If you try to adjust convergence with the flash focus, perfect focus, (depending on the make of your set) or by manual convergence and the lines will not line up or even move. What you might be experiencing based on this symptom sounds like a convergence IC problem.
I have repaired hundreds of these sets, so if you have any questions after reading the following, please reply to this post and I will help you in any way that I can.
With any Projection Television that has a damaged convergence problem, you do not want to continue the use of the set. If the IC’s continue to fail they will cause a short in the power supply and cause your television to not power up, and possibly damage the CRT’s in the set.

With that aside I have some support suggestions that I have put together that may help you make an informed decision.

You should be able to get a local service center to repair this at your house for between $350.00 - $450.00, If you want to repair this set yourself, I have some instructions below that will be a help to you.
While it is not a very hard repair, this repair can be a bit tricky


How do I tell if the IC’s are damaged?
When looking at the area around the convergence IC’s you see some resistors that have changed colors, or you test a resistor and it no longer reads the marked value. You will have to replace the IC’s and the supporting components.

When you remove the old IC's, please be sure to remove all of the old heat sink compound, as it can act as an insulation for the new IC's and cause them to overheat. I usually clean the heat sinks with alcohol and a small rag.


Where are the IC’s located and how do I find them?
There are two and large IC’s that control the convergence in a big screen set. Some of the newer sets only have one. If you only have one, it is right in the middle of the set on the center circuit board. They are secured to a very large aluminum heat sink. They will have a part number stamped on them that will start with an STKXXX-XXX, like STK392-110.

Along with the convergence IC’s there will also be some associated components that will need to be replaced as well. There are some resistors that are part of the convergence circuit that will be open and need to be replaced. Most likely these will appear charred in the center. If you have an Ohm Meter or a DVM, check all the resistors that are close to the IC’s and you should be looking for either ones that have opened or have changed values.

If one of the convergence IC’s are found to be bad, I would replace them both, if one has gone bad the other may go soon. I usually order my parts from Andrews Electronics in California, they will have the OEM components that you will need.
Their site is
http://www.andrewselectronics.com/welcome.aspx
And their phone number is a 24-Hour Order Desk: (800) 274-4666
I recommend the phone order so you can talk to the person about the different types of IC’s that are available.

I would also advise that the convergence IC’s be OEM or better, just because they are cheap does not mean that they are a good deal. I have seen the cheap IC’s fail after a short time, even though they look exactly like the OEM IC’s. I think that the bottom line is that you will get what you pay for when it comes to the parts.

You can also try
http://www.tvrepairkits.com/ .
Here is what they offer.
•OEM Sanyo Convergence Chips. These are genuine OEM Sanyo chips - Not generic ones. Sanyo was the primary supplier of convergence chips used in TV sets made by Philips, Sony, Hitachi, Panasonic, Toshiba, Mitsubishi, and many others)(2 per kit )
•Convergence Resistors
•Pico Fuses
•Thermal Paste
•Photo Instruction Manual - Complete Instructions on how to repair your TV. This is a step by step photo instruction quide that will walk you through the repair. (Download Version - PDF format allows you to view/print from your computer)
•Desoldering/Soldering Tips (Instuctions on how to solder )
•Email/Phone/Live Chat Support


I hope this information allows you to resolve this issue.
If you need further assistance please comment to this post and I will try to help you further.

Thanks for using FixYa
asnowman


I have attached some photos of really bad convergence problems; your picture may not be exactly as bad as these.


c56dbfc.jpg
929d14b.jpg

Dec 07, 2009 | Sony KP-51WS520 51" Rear Projection...

1 Answer

Hitachi 61UWX10BA RPTV Convergence Repair


All of the resistors that fail are very low reading ones---like RK54(1.5 OHM-1 WATT) RK50(2.2 OHM 1 WATT) AND RK58(2.7 OHM 1 WATT)

These are not large resistors--all have location numbers on top of the board under them---most of the protection ones will begin with RK----check them like a fuse--they rarely go off value and if no reading across them they are bad---

There will be some higher value resistors like 150 or 220 ohm----never seen one of those bad.

Sometimes you just have to check them all and if they are good replace the chips and see what you have.

Do not forget to apply heat sink compound to the new chips before you install them(remove any old grease first from the heat sink.)

Good soldering is important here.


SD TECH

Oct 28, 2009 | Hitachi 53UWX10B 53" Rear Projection...

1 Answer

53udx10 goes into shutdown


Normal 0 MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} The best advice I can tell you at this point is to go to tvrepairkits.com and order the complete convergence kit for your model of TV set, no need to search and order multiple parts from different sources and pay multiple shipping fees! The kit comes with original Sanyo STK IC’S , not those cheap aftermarket or china made IC’S full pictorial directions, the thermal paste, resistors, the correct Pico fuses, AND free live on-Line tech assistance in case you run into a problem with the repair. They ship out 2 to 3 day Priority mail, the next day in most cases GOOD LUCK!!!
Larry Dillon, senior tech/tvrepairkits.com

Jul 05, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

50 inch hitachi tv, shadow behind writing and crooked screen


Normal 0 MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} The best advice I can tell you at this point is to go to tvrepairkits.com and order the complete convergence kit for your model of TV set, no need to search and order multiple parts from different sources and pay multiple shipping fees! The kit comes with original Sanyo STK IC’S , not those cheap aftermarket or china made IC’S full pictorial directions, the thermal paste, resistors, the correct Pico fuses, AND free live on-Line tech assistance in case you run into a problem with the repair. They ship out 2 to 3 day Priority mail, the next day in most cases GOOD LUCK!!!
Larry Dillon, senior tech/tvrepairkits.com

Jul 05, 2009 | Hitachi UltraVision CineForm 55VG825 55"...

2 Answers

Hitachi Television


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

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.


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.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


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

Feb 18, 2009 | Hitachi 53UDX10B 53" Rear Projection...

3 Answers

Hitachi 51G500A Convergence Problem


Hi, 110`s & 150`s are both replaced by stk 392-120`s. which run waaay cooler because the 120``s are rated at 4 amps while the 110`s and 150`s are 3 amp devices , the real key is to make absolutely certain you are not buying generics (which are everywhere on the internet), there should
be NO black print on the back side and a 4 digit code (not 5) on the front, top right corner, the originals or OEM`s are never $8.99, usually run about $12-15 and are made by Sanyo but the word sanyo will NOT be on the IC`s , so go by the info above, be sure to check for burnt resistors next to the heatsinks as well, good luck, video-tek

Feb 03, 2009 | Hitachi 51G500 51" Rear Projection...

3 Answers

Blue and yellow shadows on my Hitachi rear projection 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!

Dec 21, 2008 | Toshiba 55H70 55" Rear Projection...

1 Answer

Hitachi 60SBX78B Blue Convergence Issue


You need new convergence ICs. its an easy repair. You can get replacement ICs at the link below and they provide free installation instructions with pictures as well as free tech support.
http://servicemanuals.vstore.ca/

Apr 22, 2008 | Hitachi 60SBX78B 60" Rear Projection...

1 Answer

Double Color images and Convergence will not adjustment will not line up


The convergence IC`s board location are IK 04 & IK 05. Looking from the back of the TV they are mounted to a large finned aluminum heat sink on the right side of the chassis. The origional part (stk 392-110) can be substituted with an equivalent but higher powered IC (stk 392-180) , that is 180 watt instead of 110 watt chip. Do not use generic IC`s! Purchase origonal Sanyo chips only for best results. Replacement of the chips alone may not cure your problem if there are dammaged resistors caused by the origonal chips. Check the standing resistors on the opposite side of the heat sinks for proper value. RK42(2.2), RK46(1.5), RK58(3.3), RK52(1.8), RK50(2.2), RK54(1.5). All of these low ohm resistors are rated at 1 watt. If you encounter a bad resistor you must replace with the same exact value. Close is not good enough. This should fix your set. Do not buy a policy you have a good TV. Be sure to use a liberal dose of heat sink compound when insatlling the new chips, and clean off the old crusty stuff.

Nov 16, 2007 | Hitachi 43FDX01B TV

3 Answers

Hitachi 50" 50GX30B PJTV


Solution:
Your TV has a convergence problem. Here are some of the most common symptoms.

Screen looks 3D
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed in but stationary.
Here is a quick test....
Using your original remote go-to the tv settings then goto the convergence or magic focus 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.
You can get a repair kit that includes all the parts from www.TvRepairKits.com.
They have put together a kit for the Hitachi TV sets.
The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc.
Everything you need to fix it yourself. Its a fairly easy fix on the Hitachi sets.

Oct 20, 2007 | Hitachi 50UX57B 50" Rear Projection...

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