Leaderboard

2 Job lots that look like they include some brand new connectors. Looks more like the triac plug than the power one. https://www.ebay.co.uk/itm/365966669642?_skw=365966669642&itmmeta=01K9WZGM156T0DQQWYT25CGTX1&hash=item553550374a:g:t9EAAeSwAJVo9TCR&itmprp=enc%3AAQAKAAAA8FkggFvd1GGDu0w3yXCmi1e8NtF%2B8L2f4Q6XmZZcgnVOjWtYeHvMxfHm0f8pBjp%2FdMq41TO1Q1K3zhOeVcVAPqABFdrqH7HS8A1E4t%2FVwsivDKtYb68G8Emsn6QkOXIL200OLKW1buPVkjVB72MjElsK%2B%2B62qFAwxmTdLSULOgvtGCxuFBHzfdPM9ED6NTg7Le8cmiqHi%2FJq1SmVlCRJUpEsxJTxNtR21zULWcXqiq94QJGNwnmLaQ0fezIXjKRu4egpOB--vBaSf%2Bhjbhdc8Z9RPwxbEiY2Mb8yM3F32PGlgJ1qy8c%2BZr2rpGaJeZrKTw%3D%3D|tkp%3ABk9SR9bAwp_PZg

next up is some 80's old skool fun in the form of Naughty but Nice on Mpu3 Tech, Thanks goto @WonkySausage - images @wayfinder - layout used for lamping references @Pook - main reel symbols @pete_w - for the star and NN symbol Shortcuts are listed within the notes This machine accepts All coins including 1p's,2p's and 5p's not £2 coins as they weren't around when the machine was released Enjoy and HAPPY Gaming!!!! Naughty but Nice £3 Dx.zip

Thank you

The only set that I can see are Rev 2.1 which is what you are using. I'll have a sniff about to see if there are any earlier versions available 👍

Thank you for the fantastic layout.

Lovely stuff, thanks for this Vectra!

That’s why I didn’t buy them. had they been the power ones then maybe.

Ah OK. I know for sure that the diags won't even run if the 500Hz (500-660) is out of limits, not sure about games though but 487Hz would be enough out of spec. Both R68 and 69 should be changed as they go out of spec. The 0.1uF poly I have found needs to be selected to get the oscillator frequency correct. The % variation of this component (even new ones) is quite large and you may need to select one that puts the oscillator in range. Sometimes the 555 can be responsible and also C34 although not so often. Also make sure C32 is OK (0.1uF), I think you've already changed this. The waveform is square wave but it's not a 50/50% pulse width.

I have the logic files for the CPU card. I dont have the files for the export game card sadly...im happy to share them with yourself or Andrew. You can always try reading them too. IMO I dont think they're for security, I think the purpose is to keep the cards compact rather than having 6-12 extra logic ICs onboard.

I remade my own to do the same logic functions, I found originals to be security locked, but others have found some of them to be open

Good evening. Well, I've ordered an oscilloscope and a logic probe. I'll need some time to receive everything and get used to the basics of using it. I'll keep you posted. Thanks.

It's funny how the legs fall off of those liquorice allsort caps.

Hi, C1 is 100nf (0.1uf) +-20% 250v, a general purpose film cap like https://cpc.farnell.com/vishay/2222-368-45104/capacitor-0-1uf-250v-5pk/dp/CA05371?st=0.1uf Not as pretty as the original though. C2 is 1000pf according to the schematic.