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Hi all, Have a Sanyo MBC-775 on the bench for repair. Have managed to resolve issues with 5v and 12v rails, but the 22v rail is being problematic. In the process of isolating components for testing one of the following diodes legs detached when removing from circuit. Could anyone help me ID a...

Hi Folks, I have a couple of Apple IIe's for restoration. I have made a start on the first system. I have got to the point I am now getting random characters on screen. I assume it has faulty RAM on board. The 3x2764 mask ROMs all failed to read properly and have been replaced already. I...

Hi All, Just a quick intro for myself. I am in Australia, Brisbane to be exact. I'm into repairing micro systems, just as a hobby. Currently working on getting a 1980's S100 working again. I am looking to purchase a new logic analyser as it's about time for an upgrade. Open to all and any...

Hi All, I have a S100 Z80SBC board from the 1980's that I am restoring as part of a larger S100 system. Problem is the 2708 ROM on board has lost it's contents and returns garbage when read using multiple eprom programmers. The manual for the card can be found online here...