Fixing and upgrading an Enterprise 64

[PhilC]

As you may have seen, this arrived a couple of days ago.

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So today I've dug out a power supply for it. It's 9V centre negative btw, similar to the spectrum of the same era iIIRC.

So I couldn't be bothered to dig out my old CRT TV to get it tested, so I did a composite mod that can be found on Retro Fixers website. I'll post it here as well in case anyone would like it.

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So you can do a quick mod to the UHF modulator and your good to go but instead I decided to remove it and fit the parts directly as seen below.

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I used a BNC connector for the video out (partly cos it was all I had) so that I can use the same cable as I use on my Beeb.

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I've got to fix the broken heat sink cover at some point (if I can be bothered) as you can see above.

Next steps are creating an extension for the keyboard membrane as it's a pain to lug in. Someone has shortened it at some point. Then recap the electrolytic caps as these are a known failure point in these where Philips caps have been fitted.

Then it's time for a ram and rom upgrade.

More to follow

[PhilC]

I ordered a new keyboard membrane for the enterprise which arrived today instead of lengthening The original one. Also some new axial capacitors arrived to replace the ones on the motherboard. I'll also install the ram expansion header whilst I've got the motherboard out of the machine and do the rom replacement.

Then it's just a case of obtaining the PCB for the ram expansion and then building it.

Once it's done I may even bring it to Cyber Legends 5.

[alexh]

Enjoyable read. There's been a few affordable untested Enterprise 64s on various auction platforms recently. I've been very reluctant to hit buy but if you get on ok I'll have a punt

I see you can get RGBTOHDMI pickup boards for the Enterprise 64. Cheaper than a SCART cable

[PhilC]

Enjoyable read. There's been a few affordable untested Enterprise 64s on various auction platforms recently. I've been very reluctant to hit buy but if you get on ok I'll have a punt

I'm not sure I would get one that's a non runner as such as there are two custom chips on board.

One with garbled text etc is worth a punt as that's usually a couple of transistors and a recap needed.

[PhilC]

Did a bit more work on the Enterprise today.

Replaced all electrolytic capacitors.

Removed composite mod and replaced with simple wire link as it was causing my upscaler to flicker all the time. Quality isn't the best BUT I'm going to make an RGB to scart cable once the 14 pin edge connector has arrived from China.

Upgraded the rom yo Exos V2.4 as this includes a basic interpreter and is the latest available.

Fitted the new keyboard membrane.

And gave it a good test.

I'll be ordering an SD card interface once I can find one and ordering the PCBs for the ram upgrade soon as well.

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