Question about Panasonic PT-47WX49 47" Rear Projection Television
I have a PT-47WX49 rear projection Panasonic TV that is 4.5 years old. When I powered it up yesterday, the picture came on with a nonuniform distorted appearance. In general, the picture appears to be misaligned with a blue shadow on the entire picture. In addition, there is a blue semicircular area at the bottom of the picture with a red semicircular shadow above the blue area. It is impossible to align the blue and red using the convergence functions as different parts of the picture are out of alignment in differing amounts. Finally the geometry of the picture appears to be distorted in the blue and red semi-circular areas at the bottom of the picture.
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.
Posted on Jun 22, 2006
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" ---
Posted on Dec 26, 2009
Just replace the convergence ICs.
Posted on May 12, 2008
I had the same problem replace convergence board is the way to go, Samsung 165cm rear projection.
Posted on Jan 02, 2008
Change the stk ic
Posted on Nov 04, 2007
Replace convergence Ic's,then check alignment. Check power supply pico fuses.DCU rarely at fault.
Posted on Sep 24, 2007
Replace the 2 STK392-110 big IC with a metal cooler.
Posted on May 14, 2008
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