Hi, my 5 years old KP46WT5120 has alignment problem on its red color. When I tried its manual convergence adjustment, I couldn't adjust its red crosses on horizontal position, but I am able to adjust the red crosses vertically. All other colors are all good, and good in adjustment.
I checked the pico fuses on D board, and they are all good.
I think only one STK chip is bad, but don't know which one. Could someone tell me which STK Chip is related to the red color horizontal convergence?
Thank you.
IC8001 controls the Red horizontal. They will be marked on the board. Its recomended to cahnge both Ics at the same time as the second one will most likely fail soon if one has failed.
Thank you. I have replaced the IC8001 and it is now working very well.
When I dismantled the chip, I found only half of the back side area of IC8001 covered with thermal grease, maybe that is the reason why this chip died earlier than IC8002. I re-appled thermal grease thoroughly and Hope they will both live long this time.
Glad that I could assist you with the problem.Congratulations on a job well done.