Question about Hitachi 53FDX20B 53" Rear Projection Television

4 Answers

53fdx20b I have a convergence problem, blue where do you recondmend getting the chips and what is the proceedure after replacing the chips

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  • casadeware Aug 10, 2008

    Does anyone have pictures of the location of these chips, also were can i buy the chips, which chip do i order and where -110, -120???

  • casadeware Aug 11, 2008

    That link indicates the parts are unavailible?

  • casadeware Aug 12, 2008

    I'm fixing to order the chips is there good one and ones to stay away from and what else do would you check and or replace, i have read about some resistors and capacitors, do you know the "R"/"C" numbers and values i should check while i'm in there?

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First before doing any work on the tv, unplug overnight so that the capacitors will discharge. Next the chips you are referring to will not be hard to find and will be located on the convergence board which can be found easily. Just follow the bulb back to the source. For replacing, you will need to know how to solder, if you don't, find someone that does as this is very important.

You can get the chips from Radio Shack, they should be STK 392-110 and the other one STK 392-150, but find them on the board first and check to make sure. I think that it may be a different problem but these are cheap and a good place to start so give it a try. You can also order these chips online at various websites. Just search for the two chips

let me know of any further questions that you may have

Posted on Aug 11, 2008

  • Benjamin Patri
    Benjamin Patri Aug 13, 2008

    There shouldn't be any need to worry when buying new ones. If you found the existing ones, just match them up with the new ones. Any brand should be fine. Let me know if you still have questions with this


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You would need to go through the company that makes them or through a tv repair shop to have the parts ordered.the tv should reset itself once the new board is in place

Posted on Aug 10, 2008

  • Ronnie Houston Aug 11, 2008

    you may have to go through a tv repair shop.if the parts are not availiable then it means it cannot be repaired other than by a repair shop IF they can fix it

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You can check this link for that convergence that your looking http://www.partstore.com/Search/Model/Hitachi+Ltd/Hitachi.aspx
after you replace thet convergence correctly its should be working fine already..

Good luck.........

Posted on Aug 10, 2008

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1 Answer

Hitachi 53fdx20b has yellow line on top and bottom an well as blue, all color if off. What is the problem and how much would it cost to get fixed or can I fix it myself?


It sounds like a convergence problem and is typical for many projection sets.

Parts cost would be under 25 dollars.

The repair consists of getting at and replacing two convergence chips and being able to solder is also involved as they have 18 pins each chip.

Let me know your skill level and I would be happy to help.

Oct 22, 2011 | Hitachi 53FDX20B 53" Rear Projection...

1 Answer

Screen is shrinking and colors are out of alignment


Your TV most likely has one of two 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

Dec 14, 2010 | Hitachi 53FDX20B 53" Rear Projection...

1 Answer

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


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...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jan 31, 2010 | Hitachi 53FDX20B 53" Rear Projection...

2 Answers

I have a double screen , bended on the sides what is the fix??? red kind of 3 D. It is a Hitachi 52 in projection hdtv model # 53fdx20b. Aprox how much will it cost to fix? Can I fix it myself?


You can fix it yourself but it involves two things--being able to get at the convergence chips and being able to solder etc....

Not a difficult repair and total parts cost should be under 30 dollars.

Let me know if you need help as I am here to help.

I will give help and options if you ask.


IF THIS HELPED YOU rate this solution as I do this here for free.

SD TECH

Jan 30, 2010 | Hitachi 53FDX20B 53" Rear Projection...

1 Answer

Hitachi convergence seems to be bad, but all resistors check in spec's can you check ic's the cross hach lines will move in all directions but some are bent


I know this set very well, have fixed hundreds of Hitachi sets with convergence problems--

first--did you just go into the customer menu?

There are two ways to get into the tech convergence mode on most of these sets---if the set has "MAGIC FOCUS" PRESS the button the front panel---while magic focus is running press magic focus again --if STOP is displayed on the screen press either RECALL OR STATUS BUTTON ON THE REMOTE--set will go to the tech convergence mode--take a good look there ---if red or blue is skewed most likely one or both of the 2 STK-392-110 CHIPS THIS SET USES IS BAD--NO WAY TO TEST THEM--IF RESISTORS ARE ALL GOOD--you have to replace BOTH chips to see if one is your problem.

You can also get into the tech convergence mode by removing the front speaker grill and inspection plate behind it----there is a tiny micro switch on the front of the board (little blue button) with something not metal--touch it with the set on and you will be in the convergence mode.


I presume you know how to navigate with the remote in this mode 2,4,6.8 to move--ant to select blue and 0 to select red---enter button will stop blinking cursor and you use the ARROW CURSORS to adjust---DO NOT TOUCH ANY OTHER BUTTONS---

What you are looking for is will the "bent" lines adjust.

If the answer is no--change the two chips and see what you have--The STK-392-110 chips can also be replaced with STK-392-150 chips---they are a longer life version of the original chip.

If you need help doing the repair ask me before you begin.

SD TECH

Oct 19, 2009 | Hitachi 53FDX20B 53" Rear Projection...

1 Answer

Hitachi 53FDX20B Rear won't turn on and LED's Flashing


I believe they are the voltage supplies for the TWO convergence IC's that this set uses(either STK-392-110 OR STK 392-150---THEY are interchangeable--but the 150 is a better device)

The easiest way to prove if this is your problem is to locate the two chips (black--2 1/2 inch wide X 1 1/2 inch tall with the STK number printed on them IN WHITE)

If someone unsolders all 18 pins on each chip--see if the set will turn on with them out of the circuit (you do not have to remove them--just unsolder both---If the set comes on the convergence will be very bad but you will know one of the chips is bad.

Also if you look at all the resistors around them (most will have location number RK46 etc) see if any of them are discolored or burnt. You find a burnt resistor and it is a sure bet onE of the chips is bad.

BOTH CHIPS NEED TO BE REPLACED!

A pretty easy repair if you have good soldering skills and I can tell you what you will need to do the repair.
If replacement of the chips fixes the set it just needs to be adjusted with the Hitachi remote and should not have this problem again for 5-8 years.


IF YOU HAVE QUESTIONS, do not hesitate to ask me---I am here to help people.

SD TECH

Oct 09, 2009 | Hitachi 53FDX20B 53" Rear Projection...

2 Answers

Color convergence "whacked out"/blue shadow to right side


Your TV most likely has a convergence 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.
Here are some photos of convergence problems.

3dc9420.jpg
645fba6.jpg
0dcec37.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.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Jun 03, 2009 | Hitachi 53FDX20B 53" Rear Projection...

2 Answers

When i turn on tv the screen is turning green


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.

Dec 11, 2008 | Hitachi 53FDX20B 53" Rear Projection...

3 Answers

Hitachi 53FDX20B


If you have a color (red, green or blue) that is bowed inward from any side, then one of your convergence IC's has cracked loose or burned out. There is no way to fix that manually - the IC and possibly a resistor must be resoldered or replaced, and that should be handled by someone experienced in repairing and realigning convergence circuits.

May 06, 2007 | Hitachi 53FDX20B 53" Rear Projection...

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