Leaderboard

I've started off with the hardest job first, soldering on the H8 cpu... its 100 pins in 15mm square area! To do this I'm working through an aerospace spec microscope...started it here incase I Mucked it up and ruined hours of work later. The Cpus are new old stock which made it easier with the pins all being perfectly straight. £14 each but I'd much rather use these than lift off old battery damaged Cpus. The first 2 went on OK no dramas...sweated buckets

Components are free??? Are you serious lol? On the contrary firstly... I like it its fun... I enjoy it plus its pushing my skills, repairs and reverse engineering. I literally took my Global Stealth board to an interview and was able to change careers because I'd built it. Many reasons to have a go... because I can. As for you can get a working board for X this and that. I will just remind you this is a project/engineering thread not a Del/boy "dem things is werf" thread. Leave that to your threads 😎

Rewired the psu to terminal block and measured the voltages. Found a broken fuse holder on the 17V AC output, linked it out for the time being and read all voltages fine. Will replace the fuse holder when the new ones arrive. The terminal block will allow easier checking of the voltages in the future. @midibob Would the 17 / 18V line feeding the psu board be ok at 20.4V ?

The soldering on the CPUs looks excellent, fantastic workmanship, good luck with the rest of the work.

Thanks for the note, I’ll post my progress and findings on this thread for future reference. I spent some time last night looking at the psu and the wiring. Have ordered replacement fuse holders from swallow amusements. Will add a break out terminal block to the psu for easier testing.

Looking good! Least your address didn’t need cropping from these pics! unless going to buy and sell these on in bulk like the impact cards, how comes you’re bothering? Can pick up workers for around £80, so unless you time is worth not much at all, and components are free, why bother?

Steady hands required

Looks great Matt did you hot air or drag solder

Speaking to Nick this morning about this one. Keep all the questions in this thread as it'll be good for anyone else in the future for reference. One problem with this tech is some of the chips are extremely rare, at least in the UK. CPU, clock chip and the PIO's on all the other cards. RAM is easy to get though. Do watch the voltages as the CPU sits on top of the 10v rail and not ground which is highly confusing!

Latest machine in at chris217s is Nudges Unlimited. The first mpu3 awp by Barcrest as you all know. It's one that was missing in my collection,so now I have a run of 9 Barcrests in a row from Hi-light to Snappy Viper. Here's a video for you. Unfortunately atm it has a token payout fault which could be a blown triac on the board. Solenoid checked out OK so defo a board fault. But it can still play and pay out 10s. The machine is mint inside and out,but it did get the late Borgred treatment. RIP John🙏

Hey everyone,hope you are all doing ok. Update on Firecracker. All sorted now. It had a faulty reel board so suspect sensors..£2 roms work fine and works a treat. Here's a video I put up on my youtube channel. Hope you enjoy watching

Glass fitting. This is the part I have been looking forward to for a while. Fitted the glass in to the freshly painted frames. Glass I’d 4mm instead of 6mm on the original. Added some foam insulation strip on the back of the brackets to clamp the glass tightly. Fitted the buttons and their new decals, reassembled. Fitted the fluorescent tubes to the new mounting brackets. Moved the reel deck by 5mm to the right to align with the glass. Laid out the wiring loom and with the aid of pictures of previous rebuilds for reference fitted the bulb holders with a best educated guess. The bottom glass looks very good indeed, need to think about the bottom fluorescent tube lighting the bottom feature through the white lamp mask, may be as simple as a cover for the tube. Top glass has the black mask slightly out by 2mm but is an easy fix. Overall very pleased 😄