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General Stuff(tm)

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stephen_usher
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Re: General Stuff(tm)

Post by stephen_usher »

And another machine arrives... A Mac LCIII which someone else has given up trying to repair.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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rubber_jonnie
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Re: General Stuff(tm)

Post by rubber_jonnie »

stephen_usher wrote: Wed Feb 28, 2024 1:44 pm And another machine arrives... A Mac LCIII which someone else has given up trying to repair.
Pictures please :)
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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stephen_usher
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Re: General Stuff(tm)

Post by stephen_usher »

Well, he said that he'[d tried replacing the CPU... And battery damage...

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Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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Steve
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Re: General Stuff(tm)

Post by Steve »

The CPU isn't very well soldered.. even some of the pads look like they're floating / touching. I also don't think that looks like a new CPU... the legs are all bent out of shape and corroded...
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rubber_jonnie
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Re: General Stuff(tm)

Post by rubber_jonnie »

Yikes!!!
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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stephen_usher
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Re: General Stuff(tm)

Post by stephen_usher »

Steve wrote: Wed Feb 28, 2024 2:21 pm The CPU isn't very well soldered.. even some of the pads look like they're floating / touching. I also don't think that looks like a new CPU... the legs are all bent out of shape and corroded...
That was one of the CPUs Exxos sent to me with a relocator board which I didn't use and sent to this person. They were in the original CPU cradle.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
Top
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rubber_jonnie
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Re: General Stuff(tm)

Post by rubber_jonnie »

stephen_usher wrote: Wed Feb 28, 2024 2:52 pm
Steve wrote: Wed Feb 28, 2024 2:21 pm The CPU isn't very well soldered.. even some of the pads look like they're floating / touching. I also don't think that looks like a new CPU... the legs are all bent out of shape and corroded...
That was one of the CPUs Exxos sent to me with a relocator board which I didn't use and sent to this person. They were in the original CPU cradle.
Look how straight the CPU is...
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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stephen_usher
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Re: General Stuff(tm)

Post by stephen_usher »

As straight as that crocked pub that went up in flames last year.

Goodness knows why he decided that it needed a CPU change as there's no battery damage in that area.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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lilwashu
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Re: General Stuff(tm)

Post by lilwashu »

It needed a CPU change because of the cap damage eating the pins:
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IMG_1851.JPG
IMG_1851.JPG (637.75 KiB) Viewed 3376 times
It's fair to say my CPU replacement attempt didn't go well (cough) so I gave up at this point before messing it up further.
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PhilC
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Re: General Stuff(tm)

Post by PhilC »

There are a few floating pins anyway on that CPU but even without looking too hard it’s obvious there are plenty of errors to fix, hopefully once you’ve sorted the bridges out it’ll boot.

I may have one or two spare chips from a donor LC-II if they are the same.

Also sure there shouldn’t be a missing chip??
If it ain't broke, test it to Destruction.
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