Zenith r40w46 projection

I have a convergence problen on this set.  I could replace the resistors and the 2 ICs but would rather buy a complete board.  Does anyone know where I can purchase this Board?  The Numbers are MP-03AA (Conv-Out)  or either 687oVS1531A(0)  also which would be the Part Number?   Thanx Alot for any help in this