Samsung HC-P4241W Part Numbers

From all I have read, I seem to have a convergence issue with this set. I understand I can replace the ICs (STK392-150) with new ones (upgrade STK392-180), however the parts cost and time/labour to me outway simply replacing PCB board - the problem is I have not found the correct part number of the PCB containg the ICs. There are about 4 PCB's listed for this set, and no real description to figure out which witch is which. If someone knows what this board's number is for ordering from one of the parts sites, it would be helpful.