*** M E M O R U M ***

Martin A wrote: ↑07 Jan 2025 19:49

davesnowdon wrote: ↑05 Jan 2025 20:32 I'm too late for Christmas

Not for 2025

I'm too late for Christmas

Happy New Year all!

Victory! I ended up replacing 3 4116s. I tried checking for overheating chips but didn't feel any obvious differences. I ended up grounding pin 14 of each VRAM chip in turn via a 15 ohm resister and found 3 with dodgy bits. De-soldered those, fitted some sockets and it worked first time with the rep...

I've got some 4116 chips from retroleum.co.uk. They appear to be TMS4116-15NL so according to http://www.primrosebank.net/computers/mtx/techlib/mtx/mtxvram.htm they should be fast enough. I'm reading through the service manual and also http://www.primrosebank.net/computers/mtx/repairs/vram/mtx_vram_...

Thanks for all your help Dave! I think sorting this has become the project for my Christmas holiday. I'll make the change to get colour video and have a go at swapping out the 4116 you suggested

Sorry about the long delay in updating. I got hold and a composite video cable and a monitor that can display composite video and this was the result. IMG_0839.JPEG For comparison this was the startup screen with VGA output IMG_0840.JPEG I guessing this means that it's not an MFX issue after all but...

I only got one response on the doodle poll so it seems that the interest is not there (or I was just too late to the party).

I'm still potentially interested in an online Memotech event next year - maybe it could introduce new people to the platform or this forum.

I've created a doodle poll to see what times (if any) would work for a virtual meetup: https://doodle.com/meeting/participate/id/b8OQNp3a Alternatively, if people don't mind other retro enthusiasts in the same meeting there is https://www.meetup.com/London-Retro-Computing/ Despite the name it's not ...

I'll be at the Cambridge Retro Computing festival this weekend for the Saturday.

I'd be interested in an online meetup this year if a physical one is not happening.

I have a paid zoom account we could use (not subject to the 45 min meeting length of the free accounts)

Thanks all! I'll try graphics mode and re-seating the chips. I did try a couple of games when I first got the MFX and didn't see any issues.
Might be a couple of days before my next update - I need to finish a Halloween project.