Question about RCA P46921 46" Rear Projection Television

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My convergence is not good how i can adjusting it

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Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as www.TvRepairKits.com

Common Problem #1) Convergence has gone out

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 pics of convergence problems.


my convergence is not good - 7859b01.jpg

e87380c.jpg
SOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Common 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 fmy convergence is not good - 578ba6c.jpgd.

578ba6c.jpg


69189a5.pngSOLUTION

You can see some more examples and find a fix using this link on Fixya
http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Posted on Jun 02, 2011

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1 Answer

Hitachi 60EX01B, horizontal picture is off along with the red convergence. Would like to leave set on and take front panel off and adjust accordingly, instead of unplugging and plugging back in. Says 200v...


You should be careful as dangerous voltages are there, if red convergence is off a lot likely bad convergence chips. A lot of the chips will either be good when cold or even drift when hot.

Note that this is a older set and the twenty or so surface mounted caps in the digital convergence which store the adjustments may be failing---usually if good convergence when hot.

Fixed more than a few of these sets.

Oct 15, 2012 | Televison & Video

1 Answer

Rca d52w19 rear projection changed flyback and cp150 cap. fuse fl231 is good . have bowed screen and 3d effect. convergence shows in menu but cannot adjust at all.


IF the FL231 fuse is good and you still can not adjust the convergence then the Convergence power supply board would be the most likely problem. You can get the replacement boards from www.tvrepairworld.com

Mar 31, 2011 | RCA D52W19 52" Rear Projection Television

1 Answer

How do i make all the colors sync up to get rid of yellow and blue shadowing


Go into the customer menu with the remote and select convergence; if red or blue will not adjust in some direction you have a convergence circuit problem----depending on actual model number set uses two convergence chips--they would have to be replaced.

If the convergence does adjust in the customer menu but not good enough I can give you the sequence to get into the tech menu to fine adjust-remember if if will not adjust in the customer mode, it will not adjust in the tech mode either.

See attached photo of Philips convergence problem.

If this told you something you did not know, rate this solution as I do this here for free.

REGARDS, SD TECH



723880c.jpg

Aug 13, 2010 | Philips Televison & Video

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...

4 Answers

Projectors need to be adjusted i guess they moved when TV was transported


do not move crts manually. go into the menu and adjust the picture's convergence.

Jun 18, 2009 | RCA P61960 61" Rear Projection Television

1 Answer

Convergence Problem and Contrast Adjustment


Have you checked all of the resistors inthe convergence circuit as well? If not, check them for the correct impedance.. Remember, you have to pull one side of the resistor out of circuit to measure it correctly. 
If all of the resistors are good, then you have to do a coarse convergence adjustment on the set through the service menu.. if you need the service manual for the convergence directions, I have one uploaded in the technicians corner of techlore.com



Dec 25, 2008 | Televison & Video

1 Answer

Convergence problem


The reason you can not adjust it is because there is hardware failure in the convergence board.
Visit this website and ask them for a convergence assembly for your TV. Once you replace that assembly, the convergence might still need to be adjusted manually.
Good Luck.

Apr 13, 2008 | Panasonic PT-56WX51 56" Rear Projection...

1 Answer

Convergence off


The convergence board is bad. If the convergence board were still good, then the convergence menu would allow you to adjust the crosshairs.

Mar 03, 2008 | Philips 51PW9303 51" Rear Projection...

1 Answer

Convergence problem


This convergence boar should be available from ptscorp.com. Go to the website, look up the telephone number, and call them and see what a new convergence amp board cost. Good Luck

Jun 15, 2007 | Samsung HCM653W 65" Rear Projection...

1 Answer

Center screen convergence problem


The convergence adjustment on the TV set are for the center adjustments ONLY. if you cannot get them in or they are way out, then you have a convergence IC problem. Dont feel bad though as it happens to every rear projection set ever made. Good Luck

Dec 30, 2006 | Toshiba 53AX62 53 in. Rear Projection...

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