Amstrad GX4000 / Plus cartridge PCB

[dthrone]

Those shells (and labels) are looking really great!  Nice work @Cwiiis.

I think the outlay for the injection moulded option is totally unrealistic unfortunately

Technically doesn't Alan Sugar own the licence to the shell designs and have the original injection moulds in his mansion's loft somewhere?  If the GX gets much more popular he won't want to give them up

[Cwiiis]

My design costs about £3.25 per unit with delivery to print in resin from JLC3DP for an order of 20, so I'd say injection moulding is definitely not worth it at that unit cost...

[elBeton]

tested a previous version of the PCB with Shinings modification of the NoAcid with 74xx112 of type ACT,AC,HC,HCT and F. All work. Reset also works

Similar to bobmoo79 I've had trouble with the 'shining' version. My approach was modifying existing working Chinnery 2.10.1 cartridges (still using 74HC112N)

Steps were:
1. Cutting the R1 (4.7K) line from VCC and routing CCLR
2. Changing C1 from 100nf (104) to 0.1nf (101)

The results are the CPC464 plus starts but with white green or partial graphics on the cart. I've reverted Step 1 of the 'Shining' changes and the games start fine

Be interested to try the Eto version when that is available

Pictured are the modifications. Any ideas on this one?

It is possible to run from it CRTC3 Amstrad Plus demo ?? https://www.pouet.net/prod.php?which=72279

[VanZan]

Hi,

I just bought a GX4000 on eBay. It came with Burnin' Rubber (of course) but the cart has seen better days. Can I buy one of the cart shells somewhere or do I need a 3d printer?

[eto]

I have never seen that someone offers replacement shells. 

Can you clean this particular one? It just looks dirty. I would try that first as even the best 3D print still looks like a 3D print.

[VanZan]

That ain't dirt mate.....the shell is discolored and the sticker is faded!

Burnin' Rubber ain't particularly great so I might just toss it.

[Cwiiis]

That ain't dirt mate.....the shell is discolored and the sticker is faded!

Burnin' Rubber ain't particularly great so I might just toss it.

Don't toss it whatever you do, those carts are handy if you have a Plus and want stable behaviour with expansions... I'd gladly print you a shell, but the FDM printed shell isn't going to look as nice as a resin print and you'd probably be better off just trying to clean/treat that shell somehow. If you ever consider chucking it, send me a message and I'll take it off your hands