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Agree Matty, have had endless troubles with that type of connection over the years too. MPU4 were a bad design compared to MPU3. You can't beat a solid soldered, or crimped, connection!

First up, give the large square sockets on the scorpion2 board a squeeze 4 ways. They tend to round off slightly over time and you can get bad contacts with the chip... you start to get these types of problems. I would say carefully pull the chips and clean the contacts, but you can easily muller the chip. I'd only attempt that if you know what you are doing and are highly competent. Also check the traces around the big large resistors for the lamping fault. The traces can get heat damaged and are slightly under rated in that area and no longer join to the resistor through holes. Some boards are worse than others for this. Lastly if you have swapped the feature reel assembly, the next step is to meter continuity test the wiring on the reel plug from end to end to validate the wiring is ok. The plug 'sliting' into the wiring method on 30 year old machines can be very week. Most BFMs scorps (globals too) tend to need a bit of work somewhere on the plugs. I would do all of this before you worry about a typical board driving fault. I reckon 2 out of 10 will actually be the board driving is faulty- assuming there is no battery damage or previous repair attempts.

sorry spiders from mars not mice lol

No power to number reel, or is it spinning then showing an error? You’ve mentioned you’ve changed the reel, is the replacement known to be a good one? Could you use one of your own reels from the deck to see if that errors? if there’s no power to it, then it’s going to be the loom, or the reel driver on the board itself. transistor for the lamps.

Reel 2.4 error is the number reel, check the connections as sometimes it only take a little plug movement. The 8 lamps out could a transistor on the scorp2 board. Also check your scorpion 2 board for battery leakage as it destroys it. Especially the sound area. Good Luck

Afternoon trying to help someone who has 2 piggy stardust mice from mars machines both boards are knackered has anyone got the game files its for a scorp 6 and pluto 6 many thanks in advance

Hello, I have had a Dels Millions fruit machine which I am finally getting round to restoring. I have a few issues which I need help with. The first issue is Reel 24 error. So far I have bought a new reel and wiring loom. But its still not working. I can manually turn the reel with my hand so the machine starts up and you can play it. The number reel just won't work. I am guessing now the issue is with the board. Could it be a resistor? As the reel tries to move and has power going to it. The other issue is about 8 bulbs are not working. I have changes bulbs and put new bulb holders on. They still don't work. Again, could this be a resistor on the board?? As I have about 15 volts to the bulbs not working and about 22v to the working bulbs. Lastly does anyone know anyone who makes reels?? As my number reel is damaged soo looking toget it reproduced. Thank you and appreciate any help, Thomas.

Hi I just manage to gett this up and working. Just wonder if was also used in UK. I belive it is the only backgammon ever made on a machine. Cant win money on this type ( but Cost. Money ) its only for play 2 player or against cpu, for high points. Snapchat-1701319154.mp4

You always find the answer Bob! Nice one

Nice result bob

Wow, it's been nearly 5 years since I last posted in this thread!!! Just had a batch of MMM's in to sort. Most faults on these boards get cured by swapping out all the components in the battery area including the RAM. There can also be the odd broken via and corroded tracks but easily rectified with rivets and patch wires. One board which I'd had a few weeks previously had stopped working so I knew it was going to be a nightmare. On power up it would bleep about every second, flash a few lamps and motor drives and the 7 seg would go on and off too. Sometimes, very rarely, it would go into attract mode but not credit and then again sometimes it would credit but only on one denomination of coin???? After about 3 days of head scratching I was getting nowhere although I did discover some more faults that would have affected the lamp matrix overload (if it ever ocurred). So here I am on day 4 and I've got no idea what's going on, nothing is making any sense and the fault condition varies every now and then. Now I have two different game chips, one is 4 ROM chips (Cash Drop) and the other is Roulette which is 3 chips. I always use Cash Drop as it confirms all ROM sockets are Ok. So lo and behold with 3 chips in it runs a treat..... hmmm put the four chips back in and socket 4 if I move the chip with a little touch it boots fine or fails. Out with the socket and in with a new one. Not the easiest job in the world as the solder is grey and crumbly on the top side. A slight diversion here... A method I use to extract old sockets with crumbly solder is to apply heat with the iron tip (approx 370c) to the top side of the pin and when it melts the solder on the underside use a screwdriver blade to push the pin flat to the board (ie force it upward). Of course the socket will be ruined but it's knackered anyway. I find this breaks the seal and the socket can be removed a fair bit easier. Lots of flux is essential of course and the usual caveats apply don't attempt this unless you know what you are doing. Back at the ranch... With the new socket in the chip now is a snug fit whereas before you could extract it with just your fingers and of course it boots and runs fine. Phew!

He don’t do tea either.

Yeah that’s me. Not got a clue, I just hack away 😛

Stay away from John "player" Wayne - he's one of those cowboys in sheds that they speak of!

Hi, I’m [Paul/pdiavolikis], excited to start using MFME and sharing layouts!

Many thanks for the kind offer. I've invested in a Desolder Station and it was a good investment. The socket is done...gradually working through the board now to see what else needs replacing. There's a fair bit of corrosion

Send it to me, I'll put a new socket on for you.

Any data/protocol software will have a D in it's name (like rrd03d.p1)

Changed the battery (ran some wires off the pads so the battery is away from the board), gave the board a good clean up, tilted the hopper upside down for 5 seconds, then followed Digby's advice for des pairing to coin mech (if anyone needs the des mei pairing guide it's on my other post in newer machines) and everything is now working! Unbelievable! Thanks all who have helped!

Thank you do much, ill give these a try

I bet this chap has a treasure trove of undiscovered information in his loft.😀

Cheers for the reply frank and nice to see you posting again. i love the inside stories of how things come to life and the people behind them.

Hi - here's some files for red hot roll, there's some in there that match your version - hope it helps RHR.zip

I did answer this but perhaps not as I should have.. here.

As always Frank, an absolutely riveting read.