VPH-1252Q My projector randomly, but frequently, shifts the blue light to the left while keeping the others normal. Sometimes if I hit it hard enough or in the right place(its a tough big guy and looks like it can take a punch...), the color ends up going back where it should be. Any idea?
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Re: Projector blue light shifts to the left randomly
Jean this is not even a TV!!! Please be more careful about what your posting. I know you are just trying to help but ill advise can cause damage.
I don't know what the issue is on this. I can tell you that the site that Jean posted is totally inappropriate. That site pertains to a specific problem that is common in
some Sony sets and should not be used to try to fix any other issue.
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If the lines you see are retrace lines, It means that the 200VDC are missing and not getting all the way to the video amplifier assemblies.
Did you touch the screen control settings by any chance before you replace the HV splitter?
Yes! Most rear projector sets have a utility to align the red, green and blue colors.
You didn't include the make & model number of your TV set, but if you look at the menu section of your set, you should be able to find this setting - it may be hidden in an "advanced" submenu. Make sure you take the time to do all three colors. The more finicky you are with removing red, blue and green tinges - the better your picture will look.
on the back of your projector there should be a switch that says some thing like normal-service or something similar to that place the switch in service, and a kind of grid lookig pattern should show on the screen next look for the adjustment screws for the colors, because it sounds like the blue position has shifted on you, this may be caused from moving the tv, or from bumping it. the adjustment screws may be exposed to where you can acces them easily, or it may require you to take off the back of the projector and adjust them that way go very slow with your adjustments, as a small movement may cause a big change on the screen. if your projector has a separate lens array then you will have to adjust the lens position. for that, there should be adjustment screws located on the side and top of the lens, that way you can adjust both horizontal and vertically.
The projector you have is an older CRT projector. It will not do high definition but will display any source that has Composite or S-Video. You can use a cable box but need the standard box and not the HD box. DVD will also work. It does take some time to setup properly. You will need to focus the lens and align the grid in the setup menu. It also requires a very dark room and depending on how many hours are on the tubes, the picture might look blurry no matter what you do. This is from the tubes in the projector getting burned in.
Hello the answer is yes, you can use a projector/projection television without losing quality. The only issue is the projector itself. If you have a good projector, It will look great. You need to check out the resolution on the projector that you want.
NOTE: ----DO NOT TOUCH THE CONVERGENCE BOARD " -------
1. Bring Up 1 Projector Light
2. Bring Your Color Convergence + Sign and Should Be Center In Your TV
3. If Not Adjust Center with The 2 Tabs Just Above That Projector Tube You Have Lighted 1 Tab Will Move + Sign Horizontal Then Roll The Other Vertical Then Roll..U Will See--"
4. Once Your + Sign Is Center Turn Up Your 2 Other Projectors Make Sure They Are Able To Adjust Across The + Sign You used 1st Make Sure the 2 Other + Signs Move Left And Right And Up And Below The Vertical and Horizontal Lines. If Not Adjust There Tab to Make This Possible.
5. Using Your REMOTE Converge The + Signs Together.
---------------- IF YOU MESSED WITH THE CONVERGENCE BOARD -------------------
6. Now Lower The 2 Lights So Your 1st Projector Is Lighted
7. Bring Up A Menue On Your TV -- Look At It ...Are The Lettering Center and Square ..??
8. If They are Lower That Projector and Light Your Projectors 1 At A Time To Verify Letters are Center and Square.
---------------If You Have To Adjust The Menue To Bring Center And Square --------
9.Looking At The Convergence Board You Will See 3 Rows Of Adjustment Dials Each Row Is For 1 Projector.
---TAKE NOTE TURN THE ADJUSTMENT Slowly---
10. Locate The Row that will adjust The Projector You Have LITGHTED"....
11. Label On A Paper What Each Knob Will Do To The Screen Very Help-Full
12.Adjust Your Letters Dead Center and Square then Lower That Projector Light And Bring Each Projector Lighted At 1 Time To Verify Menue Is Center And Square.
13.Leave On Your 3rd Projector and Bring Up Your Light On The 1st Projector
14. Adjust the Letters Of Your 1st Projector Over The Letter Of Your 3rd Projector
15. Switch To Your Convergence + Sign To Help --Turn Knobs Slowly ---
16. Make Your Letters Merge Together And Your Lines Square.
17. I Use The Top Letters and Lower Letters And Keep The box Square
18. Hey If Your Projector Colors When Looking Through The Rear Of The TV Are Not Equal With Take And loosen The Wing Nuts And Turn The Lens To Focus the Color and Make Narrow Or Wide....All 3 - Equal
DO NOT GET UPSET THIS WILL TAKE TIME MAYBE ALL DAY SO RELAX HAVE FUN"
Do Not go Sticking Your Hand Into The TV While TV Is Plugged into The Wall" ---
We need a better description of what you mean by shadowing. However I am assuming:
1. You mean it ''bleeds'' off to the right when you have something with a hard red/blue drive.
2. When you turn the contrast and color down a bit it gets better.
unfortunatly I cannot tell you how to fix convergence, but I can think of some other possibilities.
In this case the red/blue emmision of the crt is dying off and going into saturation when driven hard. To fix, replace with a new picture tube/crt. In some cases you can get a little more life out of that tube (with a watchable picture) by having the screen, focus, cathode bias, and drives slightly readjusted. It will take someone with experience in doing these adjustments on a weak tube to get it looking as good as possible.
Given the construction of the cathodes (guns) in that crt, only a very low level crt reactivate should be tried on it. The hard rejuv most crt testers give is highly likley to completely destroy the cathode on that crt.
I've posted this solution several times but here goes. Try setting up the convergence through the menu by accessing the convergence setup menu. If this fails to work you have a bad digital convergence box and need a tech to replace it. About $60 to $100 fix.