Question about Hitachi 50UX57B 50" Rear Projection Television

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Unable to align cross hairs on the blue lense. Dose the lense need to be replaced?

Posted by Anonymous on

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  • Hitachi Master
  • 3,459 Answers

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 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. Power light will blink. TV may also make a chirping noise.

Here are some photos of convergence problems


unable to align cross hairs on the blue lense. - a56fe79.jpg

6d0da0b.unable to align cross hairs on the blue lense. - fcabb43.png

fcabb43.pngCONVERGENCE SOLUTION

You can see some more examples and find a fix using this link on Fixya - CLICK HERE

Posted on Aug 28, 2010

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  • Hitachi Master
  • 5,138 Answers

Rur convergence ICs they are STK392-110s upgrade to 150s and CK resistors Mats has ICs
1-800-628-1118

Posted on May 08, 2010

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1 Answer

How do I adjust the convergence properties on an RCA rear projection tv?


Normally on the RCA rear projection TV's you would bring up your menu and choose the Setup menu, then press OK on the remote. That menu would then have Convergence as a choice. Once that was chosen the next menu would give you the choice of either letting the TV run it's own Autoconvergence program, or you would select either Red or Blue convergence.

Choosing Red Convergence would bring up a Yellow cross-hair in the middle of the screen. If the Convergence was not correct you would see separate Green and Red cross-hairs. Once they were perfectly aligned you would again see one Yellow cross-hair.

Choosing Blue Convergence would bring up a Blue cross-hair in the center of the screen. If the alignment was out you would see 2 Blue cross-hairs. Using the Up and Down and Left and Right cursor keys you would adjust the alignment until a single solid Blue cross-hair was in the center of the screen.

May 15, 2011 | RCA Televison & Video

1 Answer

I trayed to calibrate the colored cross hairs and the blue lamp dose not indecate cross hairs it is just a splater.


If your TV looks 3D, warped, or distorted it likely has a convergenge problem.
If however it just looks dull, washed out, redish, greenish, or blueish or if it looks like objects on the screen have halos the fluid in the lens has soured.
You can search google for parts or you can get the parts with repair instructions from sites such as www.TvRepairKits.com

Feb 28, 2011 | Mitsubishi WS-65809 65" Rear Projection...

2 Answers

Seeing a picture like double vision.Tried to adjust the red & green crosses and the blue. The crosses or plus ( ) signs are supposed to be ontop of each other I assume?. What seems to be the problem.


They have to be on top of each other, converging perfectly. If you are unable to align them - you have convergence issue. Two convergence IC's have to be replaced inside of your TV. I would strongly recommend to let it do by professional technician.
regards.
Russ.

Aug 12, 2010 | Philips Televison & Video

2 Answers

Does it take some type of gel under the lights, the colors are a little blurry


i also have this tv. i removed backcleaned mirrior, back of screen and lenses VERY GOOD. Then turned on tv go to convergence, sepaerate cross hairs then adjust focus on lenses. Then lenses rotate maybe about a 1/3 turn total by hand. Grab ring that houses lenses and turn until cross hairs are as clear as possible. This can be done with out help by watching inside of screen. red and green are adjustable, the blue is adjustablealso but i couldnt find blue cross hairs, maybe by covering red and green lenses the blue will show on screen. anyway when done and cross hairs are clear,lenses, mirror and screen are clean, you can adjust covergence and get a very clear screencleaning will also brighten pic. Pete

Mar 27, 2010 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Unable to align red crosshairs in horizontal range


No there are no quick fix options for this fault. The convergence amplifiers operate similar to a high power audio amplifier, so if there is an impairment anywhere in the system, it will result in distorted audio, or in the case of television convergence amplifiers, one or more colors won't align. The convergence power pacs need to be replaced and the out of tolerance precision resistors located near the power pacs need to be carefully checked and replaced as necessary. And the power supply fuse links to the power pacs checked and replaced as needed.

It is also possible that there are root faults that cause the amplifiers to go bad which include bad connections or a bad digital control module. This repair is possible for anyone having basic electronics knowledge and soldering skills. After the above repairs are performed it may be necessary to perform the static convergence realignment procedure using the outer cross hairs as you mentioned, and realigning them.

Apr 23, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Samsung model number PCL5415R The blue bulb is weak. where can i get one and can I replace it it is a 52inch projection HDTV ready


You may also have a problem with the convergence. There are three color cans that project the image on the screen. A red one, green one and a blue one. The blue one is the one that you should try and adjust. Have you tried to realign the convergence yet? You should be able to go into the menu setting and locate this option is is typically done using the remote. What you will see is some cross marks starting in the center and move to the four coners. When you adjust it you will want to align all three (red, green and blue) crosses where neither color is more prevalent. If you are unable to get the blue can to align with the others, there is a problem with the convergence board. These boards or ICs can be replaced, if you have a repairman fix it your looking at around $250 - $400. If you would like to fix it yourself you can get the parts from...
http://nfm.partsearch.com/Model/Samsung/Samsung/PCL5415R.aspx

NOTE: "Most of the text above was gathered from another online source"

Aug 28, 2008 | Televison & Video

1 Answer

Unable to converge red/blue


youre convergence ICs need to be replaced. You will need two STK392-120 ICs . You can get new ones here with online free support to help you do the repair, plus they send step by step instructions with pics on how to do the repair. Here is the link.
http://servicemanuals.vstore.ca/

Apr 18, 2008 | Televison & Video

1 Answer

TOSHIBA 65H82


you need to replace your 2-convergence ic's #STK392-110 you need to replace both ,,they are attached to 2 big heat sinks and identified as q-751 & q-752 you can get the ic's you need plus free tec support and installation instructions including pictures at the link I gave you.
http://servicemanuals.vstore.ca/

Apr 12, 2008 | Toshiba 65H82 65" Rear Projection...

1 Answer

Convergence


you have bad convergence ics

Apr 13, 2007 | Toshiba TP61H60 61" Rear Projection...

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