Dear Person: I was in the TV repair bussiness for OVER 45 yrs & left it a year ago because HDTV , plasma & flat screens went WAAAY over my head...A friend sent me a Samsung HCP-4752W with a convergence problem..The red horiz was bowed down at the top only of the pix..One of the STK-392-010 IC's was bad...I replaced BOTH IC's with Sanyo IC's , NOT generics...ALL the resistors associated with both IC's checked OK...After I replaced both IC's , I noticed that the red vertical on the left side is a bit out of convergence...The rest of the pix seems OK...It just needs some touch-ups..FYI:..Self focus is working but it does NOT correct it..Neither myself nor my customer are willing to pay for a complete service manual just to accomplish this...I have mucho experience with factory service menus...What I need is the FULL factory service menu for convergence AND step by step adjustment procedure...Your help WILL be GREATLY appreciated...Thank you VERY much in advance...RonM
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DLP projection tvs are bulky and have a design flaw in the convergence board the 2 STK convergence ICS alway dies constinely require replacement,if u use about 4 or 5 hours day in and day out.If the old Mitsubishi tv several years since is was repair,u use it alot?If yes,it time to retire it,and buy the refurbish Plama tv.Not,than get the old tv repair.U Know how to solders?Tries Websites Tv repair World.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.U can go to You Tube type in Convergence problems will see a tutoring video in repairing 2 STK Convergence ICS.
Try adjusting the convergence. If it won't move see below- red IC in particular This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$400 Be sure to vote/rate me if this helped Thanks! See link for more detail http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html
With power on, press Mute-1-8-3. That will get you into convergence mode. 1 sets factory default convergence. Avoid pressing 2 - it resets everything. 3 restores the last saved settings, 4 switches among fine adjust, line adjust and grid move. 7,8,9 - select R,G,B. The three keys below those turn RBG on/off.
Self-focus to save the settings. S-Mode to exit.
It can be a REAL headache, but take your time, and you'll get it done.
As an after thought....if you have a need to manually adjust the convergence, you probably have something wrong - unless you've just replaced parts and are doing the initial convergence.
this happens because of panel conditioning. as the panel ages it requires different voltages to produce the picture.it takes about 1000 hrs before it has conditioned. it is a simple adjustment a tech can do for you. when this adjustment is made no other adjustment will be needed for this problem.
This is a Plasma TV set, there is no convergence adjustments on this set. the convergence adjustments are for tube type projection TV sets. You could have a few problems with your TV. You could have a bad color whell assembly, a bad light engine assy. or a problem with the main board. This is not a set a that some who is not trained on plasma TV sets should attempt to troubleshoot and or repair. depending on how old this set is, it may still be under warranty. if it is not, call out only a Samsung authorized servicer, as they will have the boards and proper tools to service this TV. Good Luck