Problem with Panasonic PT-43LC14: Yellow tint covering most of screen. Convergence ok - Page 4

Still working on it got the old polarizing film removed from glass slide, Im not sure if I need to cut vermillion film and apply to slide or just cut polarizing film to shape and and not use glass slide at all. I bought a can of denaturalized alcohol for 5 bucks at walmart. Seems like its working the rest of the glue off. I'm almost curious if the glue itself is the problem. Seems like the heat made glue bubble between film abit. Sounds like a good idea to not glue it on slide and just cut to exact shape of slide and place in holder.

Hi All

I finally got to fix two problems with my Panny, I installed the ballast repair kit parts this weekend and now it turns on/off ok and at the same time I replaced the blue polarizer with the vermillion film from Anchor Optics as suggested in previous posts.

I struggled a bit as I had the 50" service manual and the projection unit is different but I figured it out and I removed the blue polarizer and it was slightly burned, cut the film to size and replaced (no glue necessary as in this model it goes into a white plastics holding fixture where it slides into place (which I had pictures but left my camera)

PT43LC14 Manual can be found here http://www.nodevice.com/manual/newma.../get26686.html

I put it all back together but the colors are off, it looks blueish to me. I had to stop working on as I ran out of time but I was wondering if there is a calibration needed after the film is replace or is there a chance I messed something else. I plan on getting back to it in a couple of weeks so any feedback is appreciated.

Hello ShilohG. Well my daughters boyfriend took the tv apart today, cleaned it reallly good and then proceeded to take everything apart. Everything went very smoothly. Found the burnt filter and replaced it then put the tv back together. Yellow is gone but the red is really red and the blue is really blue. Tried to adjust everything but had no luck. Do u have any suggestions on what maybe causing this? Thanks for all your help. Will be waiting to hear from u! Thanks Again!!

I have a panasonic PT-50LC14 we cleaned the tv real good and replaced the blue filter. Our problem now is the red is to red and the blue is to blue. We tried to adjust the colors but that didn't work. Now we are puzzled and don't know what to do!!

Hello Everyone! Well we took our panasonic PT-50LC14 apart one more time. And low and behold we figured out what was causing our color problem. Here the new filter that we purchased was turned the wrong way when we cut it therefore instead of projecting a blue polarized color it was projecting red. This to us was totally crazy but when u placed the burnt filter on top of the plastic coated vermillion filter one way in the light it shows blue. And when u turn the filter and place the old one again it shows thru as red. So, to anyone who might be having the same problem u need to go back and make sure that u had the filter setting the right way before u cut it. And do not remove the covering from the filter until u double check and make sure that when u place the old filter on top and point it to the light it shows blue and not red. The picture on the tv now looks just like it did the day I purchased it! Thanks and good luck to everyone!!

Hi mworkman

Thanks for your updates, I wanted to clarify if you used the vermillion filter from Anchor Optics or the original replacement. I used the vermillion and have the same problem you had so I wonder if I installed wrong as previous posts did not mention orientation to be key. Thanks.

I have noticed that if you place the vermillion filter against laptop screen you get blue when looking at it against your laptop screen when turning it. it turns blue the most when the sheet is turned up as a diamond shape, if you flip it on its axis you get the opposite color magenta, did most of you cut this at an angle of 45 or degrees, or was the angle a little less than 45 degrees. At a 45 degree angle it either blue on oneside or magenta from the opposite side

On another note if you cut the vermillion filter, square from the corners the filter is the neutral in color and show though as purple or pink with film removed

I am never able to see the change unless I hold it up to my laptop screen.

I was unable to see color changes through direct light, I was able to see color changes when rotated against my laptop screen. What I figured out is that any one of the polarizer in the unit will turn to the darkest color when turned clockwise at a 45 degree angle. Instead of looking for blue, I looked for the opposite magenta when setting up my cut, so when looked at old polarizer headon against laptop screen, i got kindof a neutral color. turn it 45 degrees clockwise and the color turns magenta. 45 degree counter clockwise i'd get blue on the vermillion filter. If you get blue when you look at the cut filter rotated clockwisr 45 degrees and its blue you've cut the piece wrong. There is no need for the original burnt piece of glass at all. Thanks to the board for all you help. I hope this helps others understand the orientation issue as I didn't get it by holding it up to the light. The laptop computer screen helped much more.

The colors are looking well, yellow is yellow, white is white, but i'm concerned about the blacks with this fix. Seems like there a little on the dark purple side. Is it just me. I have 2 other t.v.'s 46 lcd 120 mhz, and a 32 inch sony 60 hz lcd flat. Maybe I'm too particular with because of my other tv's

Hi bear269

Thanks for this helpful info, a couple of clarifying questions
1) Did you use the Anchor Optics vermillion?
2) When you check for the color using the laptop screen as the lightsource, do you do it with the film removed or not?

I have extra pieces of vermillion so I have to figure out what you did and cut another piece because currently mine is as others were, too blueish.

Good to hear! Sorry I didn't get back to you, I was away for a week.

I did use the anchor optics vermillion
I did it with the film removed, but it doesnt matter. Your just looking for your corner to cut from. Rotate the block of vermillion until you see magenta. when it shows magenta turn the material, counter clockwise by 45 degrees. You should be looking at the piece as a perfect square now. You can cut your slide while the film is in this orientation. you should be able to cut about 4 pieces from the original in this orientation.

If screen is slightly blueish...

LIGHT IN POLARIZER BLUE ADJUSTMENT
1. Loosen a Screw (C) of the Light IN Polarizer Blue Unit.
2. Move the Light IN Polarizer Blue Unit to the right and left
so that there is no blue tint on the whole screen, and
tighten a Screw (C) (0.20-0.23 N·m).

Thanks bear269, I won't get to try this until the end of month as this is a TV I have someplace else but I'll post my results.

I did find my color a little blue, after reinstallation of polarizer. I took it apart one last time and adjusted the polarizer using the above procedure. It turned out that when i reinstalled the blue polarizer i screwed it in with not very well centered. after adjusting it to the center a bit I got better black levels

Wow, this is starting to seem pretty complex.

I was fine with taking out the burned lens, replacing it in its entirety with a new polarizer from Anchor, and putting it all back together.
Now there's cutting the film a certain way or direction, placing it in the right way (i.e. not backwards) and fitting it back in the center.
I didn't see any screw to adjust left or right, and I figured that after it was determined that you didn't need to scrape the old one off the lens (just replace the whole lens/filter) things were simple from there.

Am I over-thinking this?

You may have got lucky cutting your film, if you cut a square from the corner of the rectanglar film. It is possible that it may have been in the right orientation when you started but to verify I would suggest holding up the vermillion to your laptop screen. There are four possible ways you can cut the block rotating the material at 90 degree angle but only one of the orientations will work... I guess you got lucky on the first try. One in four chance. If you want to check just take the left over scrap you took your cut from. if you rotate it from 45 degrees from where you made your rectangular cut from your piece of film will turn dark magenta

The additional adjustment may not be necessary if you placed the blue polarizer in just right and completely centered. the screw when loosened on the blue polarizer, enables the blue polarizer to be shifted left or right. Moving the polarizer left or right will adjust a screen that is bluish in regards to your black levels. The colors may be fine but blacks are important as well.

I inherited a PT-43LC14 with the same problem as described numerous times in this thread, i.e., the yellow tint. It took me a while, but I eventually found this thread and was really happy to find out I cold fix it for less than $20 and a little elbow grease. I ordered the vermillion filter pack from Anchor Optics on the 19th, and was anxiously awaiting the arrival of my package to fix the TV. Well, I received an email from them today (25th) saying they no longer carry that item and it is a mistake it is on their website (even though yo can still order it now!). I have searched the internet to try and find another source of this filter with no luck. Does anyone know of an alternate source?, or have a piece of filter that they wold be willing to sell to me??

Thanks
Ken

Hi Ken

I will get back to re-work my TV this weekend as when I installed the filter I was not aware of the orientation as it has been explained in the last few posts. I should have one piece left after that so send me a PM and we can work something out to help you.

Anel

OK, just confirmed with Anchor that they do have the larger sizes of the filter still available. So an extra $10, but well worth it.

Thanks so much, but can get larger version.

I got to work on my TV this weekend and thanks to bear269 suggestions was able to re-orient the Vermillion and now my TV is back normal with the right colors and long gone is the yellow in the bottom left corner.

I have a full set of Vermillion from Anchor Optics as they double-shipped in case somebody is interested.

P.S. I'm still having issues with my ballast, I replaced the capacitor and resistor from the repair kit and it worked for a few days and now is back to blinking until goes into red. If I take the light enclosure and re-introduce it followed by a power on 99% of the times it will work. Do I need to install the rest of the kit parts, I was avoiding more soldering as it is not my forte.

Definitely interested.
PM me with your price for the piece plus S&H to Vancouver -area (Canada) and we can work something out.

shawnmos

Can you please tell me what connection you fixed to get rid of language problem. I just changed my polarizer, reassembled, and now I have that problem!

Thanks
Ken

For anyone who does the polarizer replacement, be careful when reconnecting the plugs to the tuner assembly. The smallest connector on the right hand side (facing the back of the TV), will actually go in 2 places. It SHOULD go in the strip at the rear edge where the others go, but can also be connected to another socket slightly further in. If you connect it to the wrong one, you will get the "Select Language" screen when you turn the TV on.

Wasn't too difficult to do as long as you go slowly and keep track of screws. 2 areas I had a little difficulty with:

1. Removing the duct 1 unit: It's not really clear that you need to actually remove the 4 screws holding the filter in and remove the filter to be able to access 2 of the screws holding the bottom duct on.

2. Removing the ribbon cable on the LCD panel: I screwed this one up! - I thought it was a normal kind of push and lock connector, and managed to get the connector out and remove the cable, BUT I broke one of the tiny arms on the side that holds the bar! All you need to do is gently lift the grey/brown tab at the side UP to release the pressure and then the cable will come out. I did manage to get it back in OK, but it's not as secure as it should be.

Otherwise the picture looks great compared to before. I do also have the slight bluish hue in the blacks, but I can live with that for now!

It will be much easier the second time to take it apart should I choose to do so.

I replaced the polarizer and put the tv back together. Now all I'm getting is a green screen with lines coming down about 1/4 inch apart from each other. I can bring up the tv menu but get no picture and no sound, just the green screen. Anyone have any ideas what I did wrong? Thanks in advance.

Went back and noticed I broke the bar that holds down one of the ribbons on the lcd panel. It was the one in the center. Now I get a solid green screen with no lines. Anyone have any ideas?

Hi Joshua

I also broke one of the small gray bars but was able to put it back carefully as it was only one the sides that broke. Make sure you are putting the ribbon on top of the bar.