Recent content by cyllboy

I recently bought a stock of old arcade hardware. There was a trackball and a piece of panel coming from a SDI cabinet. I'm trying to find the pinout of the quadrature sensor of the trackball (photo in attachment) in order to test it and eventually to refurbish. I attach also the photo of the...

I made a printable box for the board and the Sega 837-13551. This is the link, if it can be useful: https://www.thingiverse.com/thing:4910621

I Logic-probed the pins and they are both stuck to hi: I should have a pulse instead or am I wrong? Probe is set to ttl

Thank you very much! The data sheet will be very useful for that!

Hi to everyone, my ST-V has no sound: I just checked the onboard pot and it is ok. Where do you suggest to begin with testing? No sound at all, even tried to get from the aux pins (line level out) on the board. Do you think that recapping coul be any good? I checked some of the capacitors and...

I recently published on thingiverse this box for Sega Titan. It is a work-in-progress but I think that it could be useful to others, so I share it: https://www.thingiverse.com/thing:4778438/files

I share this box I made with 3d printer for hosting the board. It is a work in progress, but I think It can be useful to others. https://www.thingiverse.com/thing:4778438/files

Thank you very much for your support! I will do as you suggested!

Hi I'm here for this great site with many people sharing the passion of Arcade machines. I'm owner of a consolized Neo Geo MVS MV1FZ, a Naomi 2 and a Sega ST-V. Long time reader of the forums, I recently subscribed. My best regards to everyone.

I confirm they are EMI filters: were produced by TAYO YUDEN, TOKIN and others and were largerly used in all sega consoles. Probably I need to find a donor board. For bypassing do you intend patching the board vias in some way or simply desolder them? The missing ones are connected to pins of...

I'm trying to replace the parts in the photo. Have you any Idea about? What is this component? (the board is sega titan video) What is the contemporary part I need to order? Thank you

Can you read the value of the diode D2? And are the LFXX components available nowdays? Thank you very much!

I do not have Idea of what is the °S4724, I think that you should find a donor motherboard to pick it. I suspect that the diode in r100 came in various board: in photos on the net I saw the same thing. "Why would someone do that?" is also my wonder. Saturn SH-2 is the same: it is extremely...

Hello to everyone. I need help for a repair on ST-V board. My board is missing SC1 (photo) that I believe is the super-capacitor for battery-backup: somebody could please tell me a suitable substitute (I do not know the value of the component). Moreover I noticed some leaky capacitors (FL50...