To help, I will require some good close up, in focus photos of both sides of each of the boards.
The wire interconnections are a weak point, so check (visual) and electrically test (multimeter on the continuity range) them.
Mark
Faulty RAM Pack
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1024MAK
- Posts: 5527
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- Location: Looking forward to summer in Somerset, UK...
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Re: Faulty RAM Pack
As you can see, technology has moved on a bit since Sinclair's 16K RAM pack
To help, I will require some good close up, in focus photos of both sides of each of the boards.
The wire interconnections are a weak point, so check (visual) and electrically test (multimeter on the continuity range) them.
Mark
To help, I will require some good close up, in focus photos of both sides of each of the boards.
The wire interconnections are a weak point, so check (visual) and electrically test (multimeter on the continuity range) them.
Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Spring approaching...
ZX81 Chip Pin-outs
ZX81 Video Transistor Amp
Standby alert There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Spring approaching...
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redgatemodels
- Posts: 197
- Joined: Tue Sep 05, 2023 11:56 am
Re: Faulty RAM Pack
I'll get on to it Mark, thanks for your input 
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redgatemodels
- Posts: 197
- Joined: Tue Sep 05, 2023 11:56 am
Re: Faulty RAM Pack
Well it will have to wait a while, my Zeddy stopped making any output today, that needs fixing first