Another Egyptian Enterprise 64

[rubber_jonnie]

@rubber_jonnie I've got some edge connectors for the RGB, you'll just need to cut them to fit. I'll send with the PCBs when I get time / remember to do it.

That would be cool, but you need to let me know what I owe you

[rubber_jonnie]

While I'm at it I need to find some suitable screws as they are all badly rusted.

I could get some rust converter gel I suppose and give them a bath...

[rubber_jonnie]

Well, I had a good cleanup of the edge connectors:

Before:

PXL_20260806_155007985.jpg (471.57 KiB) Viewed 94 times

And after:

PXL_20260807_081048553.jpg (395.25 KiB) Viewed 94 times

Very good result and I'll put a film of contact cleaner over them to help protect them.

Next I need to figure out how to get an odd film off the bottom of the PCB where all the silt was. It doesn't seem to be harmful, but it is aesthetically unpleasing...

Difficult to tell exactly what it is but IPA doesn't shift it.

Need to get the modulator sorted too.

[rubber_jonnie]

Modulator cleanup started:

Before:

PXL_20260807_083426703.MACRO_FOCUS.jpg (212.29 KiB) Viewed 89 times

And after:

PXL_20260807_085112568.MACRO_FOCUS.jpg (189.9 KiB) Viewed 89 times

[rubber_jonnie]

Modulator all cleaned up and reinstalled:

PXL_20260807_112340570.jpg (252.75 KiB) Viewed 83 times

PXL_20260807_123651173.jpg (447.08 KiB) Viewed 83 times

So back to picking up composite from the modulator input with croc clips

[rubber_jonnie]

Upgrade no 1 done:

PXL_20260807_134131722.jpg (361.81 KiB) Viewed 79 times

New ROM with EXOS 2.4 installed, so including BASIC:

PXL_20260807_135343029.MP.jpg (362.65 KiB) Viewed 77 times

PXL_20260807_134146292.jpg (315.42 KiB) Viewed 79 times

Just need that keyboard membrane to turn up now.

[PhilC]

@rubber_jonnie why not pop another heatsink on top of that copper sheet whilst you've hit the case open?

And you'll need to get EXP1 & 2 ready for the ram expansion

[rubber_jonnie]

@rubber_jonnie why not pop another heatsink on top of that copper sheet whilst you've hit the case open?

And you'll need to get EXP1 & 2 ready for the ram expansion

Funnily enough I was thinking about both those things earlier today, need to find my small heatsinks, and I'll pop one on the other custom IC while I'm there.

[PhilC]

@rubber_jonnie the second heatsink would be in the way of the ram upgrade

PXL_20260806_145746130.jpg (341.95 KiB) Viewed 72 times

[rubber_jonnie]

@rubber_jonnie the second heatsink would be in the way of the ram upgrade

PXL_20260806_145746130.jpg

Okey dokey, thanks.