Recent content by xga

I followed this guide by keropi to attempt a conversion of a System 16B 171-5704 ROM board that was formally Flashpoint to Shinobi (set 6, System 16B - unprotected). https://www.ukvac.com/forum/threads/conversions-guide-for-sega-system16b-5704-romboard.65713/ I first removed the FD1094...

So if you have 5.15v at the JAMMA edge, what are you measuring on say a TTL IC somewhere on the board? My guess, is somewhere right around 5.00v with voltage drop.

Another awesome project! I'd be interested in either option if you could put me down on the list, please. I have a M92-A-B CPU board and a M92-B-F ROM board. Hopefully they'll be compatible.

I'd be interested in a couple.

CoinOp Warehouse mentioned them in a live stream a year or two ago when they were selling a rotary game cab. When I looked into it back then, they appeared to be still available (and I don't think they were cheap either) but perhaps they're no longer available now... Emailing Samducksa / Crown...

If you're not concerned about them not looking like LS-30's, Samducksa still sell rotary joysticks. http://samducksa.com/new/eng/product/index_view.php?UidNum=380&PHPSESSID=b5ef96c981894e92dd7ce7cc6f6051b3 View: https://www.youtube.com/watch?v=Jm1-vEfOcMM

I'm interested in both items, please.

If you're in the UK, this looks to be a good match in the black. https://www.vintagecarparts.co.uk/products/168-container-rubber-matting#pic0

Good to hear! What was the fix for the issue?

If it's an original monitor for the Blast, then it could be the MS-2930 chassis which has a traditional remote board with knobs on it, but definitely no OSD.

MS-2931 remote board has no knobs, just three buttons. Might you have the wrong remote board for the chassis?

Well done! Was it just a broken trace?

I would suspect IC163 (ULN 2003) as being partially faulty. There's not much between pin 10 of IC163 and pin 17 of connector C except for a resistor array and some filter capacitors. It's possible that part of the resistor array may have failed or one of the filter capacitors has died, but...

I transplanted caps from a donor board and in the process measured the C22 SMD cap (95nF). It's probably just doing some filtering and not strictly required. Hope this might be useful for someone one day.

Hmmm. I think the pot may have been replaced and the audio circuit recapped, but apart from that, I think it's all original. Original audio amp IC, original 2151, DAC, OKI etc...