Question about JVC HD-56FB97 HDTV

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What is part number for optical block and a good source for part.

I've got Yellow/Green screen, when color control turned completely down, with a faintly Purplish large splotch. I've fixed a Sony with similar problem, but I'm having problem finding part number for this JVC.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: JVC MODEL # AV-48WP74 48 IN. BIGSCREEN TV.

I had a problem with my TV colors not lining up. One day I turned it on and the green was out of wack. I checked this message board and replaced the STK chips, bad soldering and all led to me just giving up on that and buying a whole new Convergence Board ($185). I just plugged this in and though now my Green lines up okay, my red is out of whack. Is there something I am doing wrong? Can anyone help me? Did i miss a step? Frustrated......Bruce

Posted on Aug 18, 2007

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ctf1800
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SOURCE: JVC Model No. HD-61Z456 Screen is completely Green

Sounds like the green tube is shot, tap on the green board see if theres a loose connection, with something hard plastic

Posted on Jan 31, 2008

petraman7
  • 1175 Answers

SOURCE: JVC AV-48WP74 only has green color

Have a shop look at it. you cant fix it at home. really.

Posted on Feb 24, 2008

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SOURCE: JVC I'Art. 65" projection TV. AV-65WP74 green screen sages real low.

I had the same problem that required a $400 technician fix. 1st time i tracked it to a $0.05 resistor blown. could not find in radio shack... was due to bad "brain".

Posted on Dec 04, 2008

waynejamescm
  • 67 Answers

SOURCE: double vision on tv with purple and green colors

Hello,

This television set, as well as most rear-projections, is prone to convergence driver problems. There are two large chips (STK392-110's) in the TV that need to be replaced, as well as some resistors that are likely damaged as well. Any competent TV repair shops should be able to repair this TV for 200-300 dollars. It is important to note that if the back of the TV is taken off without the proper prep., the Digital input (DVI) will be disabled permanently.

Hope this helps you...

Posted on Dec 30, 2008

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1 Answer

How do I get the yellow/green color toned down on our Sony KDS-60A2000 TV?


If the screen has a yellow green color to the whole or most of the screen in this model it may be a defective optical light engine.

A photo posted here of the issue or elsewhere might tell me.

Mar 21, 2012 | Sony KDS-60A2000 60" HDTV

1 Answer

My 64" LCD picture has


Hello

My first question is, do you have an LCD PROJECTION (about a foot thick) or a standard LCD (couple inches thick).... If you have an LCD PROJECTION they have something called an OPTICAL BLOCK and far to many times, these blocks wear out, and change the color of the screen to a yellow green.

Depending on the age of the tv's some companys have given extended warrentys because of these blocks, but I do not pretend to know Mitsubishi's return policy.

Anyhow. the page you are looking for is

http://www.mitsubishi-tv.com/support.html

Go down to the word DOCUMENTS, click it, and put in your model number.

I hope this helps

Nov 25, 2010 | Mitsubishi Televison & Video

4 Answers

My Hitachi Ultravision LCD rear projection 62


Hi:
The only way to repair this is to replace the optics engine assembly, Light engines are rather cheap these days, try looking on www.tristatemodule.com for a new or refurbished one.

Apr 09, 2010 | Hitachi 50V500 50 in. HD-Ready LCD...

1 Answer

Too much yellow does not adjust with normal drop screen adjustments. can i adjust the light beams.on my philips 50"


Normal 0 false false false 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"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} 1. Turn the green screen control on the Focus Block until retrace lines appear and gradually turn it back
Until the point where you can see the retrace line disappears, just before cutoff.
2. Turn the red screen control on the Focus Block until retrace lines appear and gradually turn it back
Until the point where you can see the retrace line disappears, just before cutoff.
3. Turn the blue screen control on the Focus Block until retrace lines appear and gradually turn it back
until the point where you can see the retrace line disappears, just before cutoff.
4. If the screen still appears too bright after proper G-2 adjustment, you need to adjust the sub-bright adjustment in the service menu
control down until screen cut-off. (Service data Range is usually 21 to 25 in the Service menu, for Sony sets you first go to category "MCP2", & then adjustment item 01( "SBRT")= subright.
For electrical the focus, put on the screen a clear picture of your choice thru an input of the TV set from a DVD, then pause the playback of the DVD Look into each color and rock that color focus control back and forth (turn the control one way then the other way slowing down as the picture goes into the best focus. till the picture looks sharp do each color till they all look in focus. NOTE: it is best to look into each color tube to achieve the best electrical focus. For optical focus please follow the manual lens adjustment in the sets service manual
By Larry Dillon

Aug 27, 2009 | Philips 50P8341 50" Rear Projection...

1 Answer

Projection tv 42" panosonic hdtv. to much green in the picture. Jeff


this unit may have a resistor on the green crt-board that has increased in value. check ohms(resistance) on all crt boards and compare to one another. these will have color bands that inicate value of resistance. you do not need to know color code, just match colors of resistors on each board then measure. you could also have weak green tube. turning down the master screen control located on the fous/screen block can reduce grn. drive. to adjust proper drive for each so the grey scale is correct, turn color to tv all the way down then adjust screen controls on block for black & white picture. when color is turned all the way down, you should not have any green, red, or blue over cast on screen. mch

Feb 20, 2009 | Panasonic PT-51G35 51" Rear Projection...

1 Answer

Yellow spot in lower right hand corner


You have pretty much narrowed it down to being a bad optical block. This isn;t good news, since the optical block is probably the most expensive part in the set. Your best bet is to contact Sony customer support to see if the will allow some kind of accommodation for the repairs. Sorry for the bad new; hope it doesn't effect the rating you give me for the solution. Thanks!

Nov 11, 2008 | Sony Grand WEGA KF-42SX300 42" LCD TV

1 Answer

Yellow hue


1)Please verify your model # from back of set......

2)Reduce the color to minimum or tune in a black & white chan.
you should see gray, not yellow hue

3)Remove lower front grill cover & access panel.....locate the
focus / screen control block...turn blue screen control slightly
CW......red,green and blue must mix to equal gray

4) reset color to normal level.......reassemble

Dec 22, 2007 | Toshiba 57H82 57" Rear Projection...

1 Answer

WEGA only show yellow


Hello watts74:

When you turn your tv on, you still get an image of whatever channel you are on, but the background on the entire screen is green/yellow, correct? If so, the problem is the optical block. Read what I posted below on another thread and you should be on your way to getting your situation resolved.

Here is the link to the other thread I mentioned: http://www.fixya.com/support/t157434-green

All the best...



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By nonexpert_s.gif KDS-R50XBR1
Rank: Apprentice
Rating: 0%, 0 votes


If your SONY KDS-R50XBR1 or KDS-R60XBR1 color screen suddenly turns green, the optical block (aka light engine) is the culprit. Don't fret because as "Leadtech" has already posted back on Jul 04, 2007, SONY is aware of this problem and has extended the warranty to replace this very part. Additionally, and aside from the class action lawsuit currently pending in district court, parts and labor for in-house service IS included.

SONY states the warranty as follows:

"As part of the Sony commitment to quality, Sony is announcing that it is extending the limited warranty (parts and labor), in the United States, on the optical block of KDS-R50XBR1 and KDS-R60XBR1 model SXRD televisions until October 31, 2008, regardless of purchase date."

So all you have to do is:

1) Contact SONY Customer Service at (800) 222-7669 or (888) 772-7669 - Hours: Mon-Fri 9:00AM-10:00PM / Sat-Sun 10:30AM-7:15PM EST

2) Provide them with your model (as above) and your television's serial number

3) Tell them your screen color is nothing but green

4) They will provide you with a case number

5) They will ask you for your zip code and provide you with one or more SONY authorized service dealers, and their contact information.

6) You contact the dealer of your choice and schedule an in-house service. Explain to them that your screen is green and you are aware that many, same tv-model owners that have had this same problem, and that the optical block is the problem.

7) The SONY authorized dealer you speak with will schedule and appointment with you, and will provide in-house service.

Regarding the service, it will take about an hour to complete. Not that it is complicated for the technician, but where the optical block is located is that is time-consuming. It sits just "behind" the bottom of the tv screen and in order to get to it, the technician will have to:

1) Remove the bottom back gray cover

2) Remove the replaceable projection lamp located on the left side of the tv (looking from the back)

3) Remove lots of phillips screws

4) Disconnect many plugs

5) Remove 3 chassis closest to the back of the tv before getting to the optical block chassis, which is located up front, just behind the tv screen

Once the optical block is replaced, you will be amazed on correct color results.

Hope this helps...

Oct 15, 2007 | Sony KDS-R50XBR1 50" HDTV

1 Answer

Sony wega rear projection


Many Sony LCD projection TV's have a problem with optic block failures and your description is exactly what happens. Picture starts turning yellow or green and blotches of yellow or green. Many Sony model have an extended manufacture warranty on these optic blocks and if you get me the model and serial # of your unit I can provide more info.

Nov 13, 2006 | Sony Grand WEGA KDF-42WE655 42" Rear...

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