I had just completed the +3 audio distortion fix and was feeling mighty pleased with myself, then I dropped some tweezers onto the board with the power on. I shorted something (no idea what) and now all I get is this:
[https://www.youtube.com/watch?v=OiIiedinWc4][/url]
Research suggests i may have fried the RAM ICs. I hope so, since replacements are cheap and the current ones are socketed.
Just looking for other suggestions before I place an order.
Spectrum +3 RAM fault? (Video)
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1024MAK
- Bugaboo
- Posts: 3118
- Joined: Wed Nov 15, 2017 2:52 pm
- Location: Sunny Somerset in the U.K. in Europe
Re: Spectrum +3 RAM fault? (Video)
It’s hard to tell, I’m not convinced it’s as simple as a RAM chip fault. I would also suspect the Z80. If the Amstrad custom logic array (“ULA”) has been damaged, the only source is other boards...
What test gear do you have / have access to?
Mark
What test gear do you have / have access to?
Mark
Standby alert “There are four lights!”
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.