when i turn the machine on in the in the win and pay displays the top line and a dot at the bottom flash nothing else cant get this thing to clear any way at all.
when i first got it had the 81 so changed battery and nothing has been the same since

well i have tryed every thing ive found on this forum and more still no luck.

moved the ram clear dip switch so many ways
purchased a set of ram clear chips no luck
pulled the back plane and board apart and checked and cleaned both
checked all wires in box
check battery volts
tryed swapping ram around
and so much more

anything else i have missed before i buy a new motherboard?

Follow up-

Re-capping the board did not immediately fix the problem.  Many were bulging,  so was a good investment in any case.

I smacked the processor a few times & the top box posted briefly and booted.

I replaced the processor & fan.  Top box is in good shape.

Put it all back together.  Just a few issues left-  battery,  door optics, BV.

Big thanks to Qbert for some extra help!

Look for a label on a long chip on the MPU that has the first two letters with "SB".
There are six numbers after the SB letters...give us those numbers, and we can tell you what game the MPU is for.

Or just google the entire SB number online.

For example, SB100948 could be a possible software game chip for your "Enchanted Unicorn".

Have you tried cleaning all the bill path sensors and rollers in the BV using a slightly damp cloth?

So everything loads up close the door it is green where the notes go then it says jam then I turn my reset key an it goes away but still does not accept