Zeddy white screen after memory upgrade

Discussions about Sinclair ZX80 and ZX81 Hardware
sP1d3r
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Re: Zeddy white screen after memory upgrade

Post by sP1d3r »

msknight wrote: Sun Dec 24, 2023 5:02 pm I found a short between 6 and 24 ... er... on the CPU that's pins... er... 33 and 37.
Looking at your picture with the memory upgrade installed, it looks like the holes where the 2114 was removed from have shorted on pin 3-4, too much solder on them.
Heating your iron and touching it to each via will melt the solder evenly.
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msknight
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Re: Zeddy white screen after memory upgrade

Post by msknight »

You are bang on the money.

Zeddy boots to K and gives top of 32768. Woooohooo!!

Thank you all so much!
Moggy
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Re: Zeddy white screen after memory upgrade

Post by Moggy »

Back on the road for Christmas bloody marvelous well done that man!! :D
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msknight
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Re: Zeddy white screen after memory upgrade

Post by msknight »

Moggy wrote: Sun Dec 24, 2023 6:23 pm Back on the road for Christmas bloody marvelous well done that man!! :D
Ta! That reminds me... to upload my picture!
Moggy
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Re: Zeddy white screen after memory upgrade

Post by Moggy »

Apologies for any upset but it's just an old army phrase I use regardless of gender. :lol:
Lardo Boffin
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Re: Zeddy white screen after memory upgrade

Post by Lardo Boffin »

Photos? Nobody said we had to do photos! :o
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Moggy
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Re: Zeddy white screen after memory upgrade

Post by Moggy »

Go on lardo you know you want to! :lol:
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msknight
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Re: Zeddy white screen after memory upgrade

Post by msknight »

Moggy wrote: Sun Dec 24, 2023 7:54 pm Apologies for any upset but it's just an old army phrase I use regardless of gender. :lol:
No upset at all :-) What ho!
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