Recent content by caius

You can find it on my Tindie store, search for it.Thanks.

Well, I think that, if you hear something, the digital circuit is running.If the SEI080BU was bad you shoud not hear anything.I suspect the 'HB-41' custom SIL is fault, this analog part is a kind of amplifier and mixer of music and sound FXs.it's a quite prone to failure part, I did time ago a...

I meant the ribbon cables and the connectors that interconnect the two boards.

Check the ribbon cables and connectors, I experienced the same issue on my board.

For sale a not working The Simpsons PCB.Board appears to be complete with no missing parts but not working (showing only a flashing blank screen).Some repairs done (see pictures).Price is 120 euro plus shipping (from Itay)

For sale a fully working Vendetta PCB.Some little signs of repair (see pictures).Heatsink of the sound amplifer is missing.Price is 170 euro plus shipping (from Italy).

This has been sold elsewhere.

For sale an untested Championship Sprint PCB set (main board + video board).Both boards appear to be complete with no missing parts and in very good condition.Price is 299 USD plus shipping (from Italy).

'ZILOG' is an internal floppy disk drive emulator I designed for the MSX2+ and turbo R computers ( equipped with built-in FDD).You can read more details about these machines here : MSX2+ MSX turbo R Like for 'The Thing' (the FM Towns Marty FDD emulator), 'ZILOG' (which I named like this in...

The Mitsubishi 'MN50005XTA' and 'M60002-0118P' are two custom chips found on Tecmo arcade PCBs of mid/late '80 like Rygar/Argos no Senshi, Silk Worm, Gemini Wing, Solomon's Key and few other boards. The Mitsubishi 'MN50005XTA' is a DIP28 .600mil plastic part : Whereas the 'M60002-0118P' is...

That's pure robbery.Who knows if they install my reproductions...

Another Irem custom IC has been defeated and successfully reproduced. After the 'KNA70H015(11)' and 'KNA70H016(12)' Irem 'KNA70H015(11)' and 'KNA70H016(12)' reproduction I took into account the 'KNA65005-17', a DIP48 part found on M72 and later hardware like M81, M82, M84 and M85 (although...

If you read carefully the post on my blog you can figure out where to find the values for other games :)

Thunder Hoop 2 and other Gaelco games need a different desuiciding process than World Rally. You can read how to properly do it on my blog : https://caiusarcade.blogspot.com/2020/01/reviving-suicided-gaelco-pcbs-right-way.html P.S. I posted the same article also here ...

Recently 'Furrtek' decapped the Seta 'X1-007' custom chip donated by me (this part, in SDIP42 package, is used on many Taito/Seta PCBs as RGB latch and video SYNC generator) I took the chance to put his (always) brilliant work into practice and made a replacement of this custom IC using a +5V...