Hi My RichAuto A51 needs to be replaced. It was superceded by RichAuto B51 some years ago.

I am untrained in electronics and to my eye there's an 'extra' part or board.

So ... Has anyone here made this conversion? and what can you tell me that you found to be important?

Where should I go for references and assistance?

I have both manuals but I am completely unskilled in this area.

Thanks,
Rob.