I'm not sure to be honest, but it's a likely suspect, the chip is in a socket so easy swapped, but I have no pin to test it on so not much point in sending it to me, there is a rebuild kit for the high voltage I think? but you need to check the voltages really but might be wise to fit the kit anyway!
Always worth checking the F5 fuse, as this controls the power to the A2 board without it only the general illumination works. Its next to the transformer in the bottom cabinet.