well book keep is stored with the 3 triple A battery's. Have you check or changed those lately? Also I had similar Issues with my BOP when my Game ROM was bad. Try reseating game ROMS.

You check mpu board Asic chip and U20. I had really similar issues after I fried mine. I needed to replace game Rom Asic and U20 if I remember right. Yours is intermitted so should be bad connection on one of those. Also did you test all your Voltage test points? I always check power first. ASAP Always Start At Power. Low voltage causes strange behavior

If you sell em i'd be interested in the package deal.

John so needing more maintenance vs. No maintenance at all is equal in your book? Is that an Oxymoron LOL! If new boards need less maintenance doesn't that make them more reliable by definition. I think I understand what you are saying that they work good when they are working good, but an old board that hasn't been touched is not as reliable as a RD board IMO. RD boards are very solid and less of a pain in the ass for someone who has Money and no time. If you are penny pinching and have time on your hands then yes its great to work on old boards but if you don't care and $300 isn't much money to you then plug and play RD boards are the way to go.

First I agree with Jalpert and was giving him solutions. But if he doesn't want to fix it and wants to replace it that's his business. RD has updated boards that will work fine. Hell I got a Sys 11 RD board for a Taxi that didn't work great but Jim sent out a new revision board that worked fine. I am sure they figured it out by now. But OP I strongly suggest you follow Jalperts advice 1st. If you have time

Depends on your area. My area has no knowledge techs that do work. So that's why I learned to do it myself. Now I am considered the "knowledgeable tech" in my area and have tons of work that I can barely get to. So if he doesn't have that option, like I didn't, and he has the money who cares. If he has the money and no tech available and nickle and dimming repairs isn't what he wants to do, I say, as long as he is not throwing boards out, do whatever you feel comfortable doing.

Haha. I think by saying this you are saying you don't like em.

John, Yes your right the ASIC is old. But that is 1 part, the ASIC chip in your rebuilt boards is ALSO OLD so that being said, RD boards have 85-95% newer components then the 5-15% new components that are part of a rebuild.

RD has great support and will warranty and replace everything if their is a problem.

Ultimately its your money and your decision but I do recommend poking around your board first for easy stuff as like WXforecaster stated if its a $10 ribbon cable neither a new RD or Johns rebuilt board will fix your problem. Double check everything do a bit of due diligence and in the end if you'd rather spend $300 for a RD vs. $150-200 on a rebuilt board that is your call.

Smart move going with John he is one of the best, you won't be disappointed and you'll be making all the purests happy! Good luck!!