Hey! Welcome LeadedSolder.
Glad you made it here

John

Haven't had much time to do anything more than do a "map" of the PCB in the area.
Tempted to desolder everything in the area, reflow all the VIAs, and then carefully repopulate it as per the schematic, component by component.

No that's perfect! I think I can see what's going on with mine now. And that photo from the bottom shows the second inductor that I couldn't find on mine. Brilliant. (My current issue is the clock circuit isn't going into resonance, so the TMS isn't getting a clock. I think someone had been "playing...

I'm trying to make sense of my PCB around the VDP clock generator area and I'm starting to think some components have been removed as there are traces that just go nowhere. This is the top right corner. If you could take a photo top and bottom of your board of the same revision, I can work out if th...

Tom, the two jumpers are to switch it to MKII mode.

Hey Folks, I've done a respin of the Multicart to make it more compact, and by using an evil hack, I've even made it so you can remove the ROM without needing to desolder. IMG20230410150432.jpg This is the new V2 release of the Multicart. Now small enough to fit inside a standard CreatiVision shell....

Haven't given up, not by a long shot. If I have to I'll see about rebuilding that circuit to test out of the board. Whatever is going on there, it's not happy. Actually, has anyone got a 700305 model (Early PAL with RF box on a riser) that can take a hi res photo of the top right corner? This is the...

Also Mono, so we don't get to hear the dulcet tones of Dick Smith

John

Hopefully faster than the BASIC cartridges were

John

That circuit around the clock is a mess! Currently both pin 39 and 40 of the TMS are being held high and I can see no oscillation of the crystal. The clock circuit winds through a different part of the circuit, and, of course, there's no silkscreen so I'm having to trace over both halves of the boar...