Andrew96_

Reel lamps are done from that reel board

Well as long as it looks ok it must be ok then, you must be better than me as I have to find faults with a meter as I cannot see bad transistor internals just by looking, reel boards so fail on mpu5

Not working = expensive and not easy to fix or find someone to fix the main mpu , time consuming and worth what it is worth to you

Thankyou everyone, this is how my eye now looks its had 3 holes into the white of the eye for the keyhole surgery and now just have to lay on my left side day and night for 2weeks to keep the gas bubble on the retina keeping it pushed in the back of the eye for it to heal back, so for now I can just see light, shapes and colours as looking through a gas bubble. But I feel it is gong well even at this early point! thanks again everyone Andrew

This project has now come to a abrupt stop for a good while, I am unable to even go and pick up the newly made reel bands. I have suffered a retinal tear and partial (over 50%) detachment of the retina in my right eye, currently have a gas bubble in my eye from surgery which helps to push the retina back and allow healing, at this point I have no idea what sight (if any) is likely to return, but hopefully will be back once things settle! cheers Andrew

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Also don’t forget t as I said on the tracks you cannot see under the main processor, like these! after all this work this board was a write off because of the damage one battery had caused, mainly the corrosion had caused more damage to the through holes UNDER the cpu than any others outside the cpu

It is also the damage you cannot see your processor pins look corroded at the very lease (in red) there is definitely track corrosion near the main cpu (in yellow) so I think like I show in my threads the whole area needs to be stripped, examined for track damage and repaired where necessary, all very time consuming and not worth anyones time to do this except if you are competent enough with all the equipment to do it your self ( which few are)

some jpm system 80 here

That’s likely why you got the machine for FREE! That Type are costly to fix!

It should run without -12v unless yours is a machine that needs it, as for the sync light, I Have no idea as never seen a machine with no sync light and working

definitely corrosion on that MPU board, also the main processor does not look that corrosion free either, weather you will find another fully working at a price your happy with will remain to be seen, also any of the connected satellite boards could be at fault stopping it booting, without a full set of spares (which is costly) to try I think your going to struggle with it

no 'sync' light, no -12v and most likely as the machine says a 'duff' mpu board how much have you allocated to spend on getting it running?

they don't exist as people have been looking for these for years

turn it off and on again.... always a winner!!