Quoted from NPO:
So I'll vouch and say I have actually SEEN this be the case. Note this post from 2 years ago:
My castle lock optos were reading out of order. If I recall correctly, they were triggering 2-1-3 instead of 1-2-3. I knew there was no way the wires just magically "swapped places" on the optos. I ordered the new board as I had heard great things about them, and sure enough, my optos triggered in the correct sequence at that point.
Seeing is believing, and that was all I needed to be sold.
Unfortunately, now the new board is faulty; however....
Think if I hadn't just installed this board and my mist ball circuit started acting up. I'd be installing a faulty unit into my game, and then I'd really be chasing my tail. No thanks.
So, at the end of the day, yes, I do buy boards to keep my games sound. I'd rather have it and not need it then need it and not have it.
Really wasn't directed towards u really... just in general that lots people buy new boards when the old can be gone over and made just as reliable or better than new ones. I have had many rd boards not work well with wpc pins so i sold them and bought oem ones. Ive also fixed quite a few bsd 24opto boards for pe8 and they have been fine for years...including mine. Nothing wrong with buying nee ones but i perfer originals as i can fix them in most cases.