Leaderboard

the spring bits that connect to the chip break off just by looking at them lol

I bunged it on ebay last night to put it out there, I don't expect to sell it tho, currently the mpu is out, I will try and look at the roms but I'm sure they are already out there And yes segs are all red

Hello Digby, We can help you with an Ace System One MPU and power supply board. This was repaired 20 years ago and then put away. We hardly have not any Ace System One machines here in the Netherlands anymore. If you are interested, you can contact me by WhatsApp on number +31642572219. When you contact me by WhatsApp I can send you some pictures. Regards Randy from the Netherlands

I have now grah 😁😬🙈

Nice machine, I've just loaded this up on the emulator and had a blast. Typically tight £4 ACE machine, mostly centred around the micro dot pot (or in this case the cash pot) but can go on a mad run every now and then. Shame about the paint on these they always seem to suffer with really bad flaking. I've got a Starstruck in this cabinet (used to be a Pound-A-Round) and I had to get all the metalwork shot blasted and powder coated as it was so bad. Looks lovely when it's done but it's major work stripping the cab down. Good luck getting this working again, it's certainly worth saving as there aren't an awful lot of these System One machines about any more.

Echoing what Nick has said, the battery vapours can cause havoc in these boards. The causes of the reset LED stuck on are many and varied due to the reset circuit monitoring all the voltages from the PSU and some other functions. These can be attributed in some cases to the voltage supervisor chip (IC2) the 555 timer (IC1) and any of the supply feeds being missing or under par. Failure of IC3 is also a possibility. The vapours can get into all the chips between the battery and CPU and all the associated components too. Most of the the resistors along the bottom edge will usually come apart using the fingernail test!! The track under the battery invariably has no copper left in some places even though the solder resist looks clean! Work that one out. So getting the reset LED to go off is usually only half (or a lot less) of the story and in depth fault finding then begins in earnest. I have done many of these and some are good to go once all the bad components have been found and replaced. Others however have persisted with odd faults, some with contaminated boards and some just unknown which work fine on the test rig but not in the users machine???

I saw this machine, took the Indy and left this behind. Absolute pain to sort and not worth the end result in my opinion. i hope your friend gets it sorted

It's a notoriously difficult unreliable tech .the pins in the male and female plugs go bad and the battery position means when the batt leaks the vapours destroy quite a bit inc the start circuit . The reset s are very temperamental also and there's also anti spark built in on some of the sys1 .midibob has repaired a few but even after through testing some boards still play up .also another common issue with them is reset upto payout again often attributed to the plug connections . Lovely games those ace machines give even the clubbers on sys1 are great machines .