problem convergence pioneer sdp-5073

[Rongedeon]

hi yesterday i was looking for the fail of convergence of this tv because the symptom is that the image is bowed and P IN P too i have seen in other post that the fail are the STK in this tv there are 2 STK 4274 and STK4277SL of convergence the question is are these STK the cause of the fails or there are more components suspicions? i dont have the manual service and i dont know
if i will have that do adjust the convergence after of change the STKs ah colleagues where i can buy these STKs and how much it? see you later since
south america thanks for the answers

[Rongedeon]

Please folks anything ideas? thanks
God bless America and whole the world