Well, I've recapped as much as I can. The post which had all the values and sizes was inaccurate.
All the low voltage Nichicon caps were really leaky. Thankfully all but one of them had been documented correctly. Unfortunately one was said to be 47uF 16V but in fact should be 100uF 35V and I didn't have one of those in stock so I had to replace the original even though it was leaking.
All the caps on the high voltage side were fine, though I couldn't replace the two small RIFA-alike film capacitors as, again, the documentation was wrong and gave the wrong dimensions, so the caps I bought were way too large.
Anyway, it's all back together and the voltages look fine but the machine still has the low voltages on the RGB output when first powered on, which slowly rises to the correct value over a couple of minutes.
The daemon Mac IIci: Can it be fixed?
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stephen_usher
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Re: The daemon Mac IIci: Can it be fixed?
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.
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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stephen_usher
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- Posts: 7376
- Joined: 13 Nov 2017 19:19
- Location: Oxford, UK.
Re: The daemon Mac IIci: Can it be fixed?
The boxed, new (to me) Apple 8.24 NuBus display card has arrived, so I can see this evening if the NuBus slots actually work. (Assuming that this isn't another DoA card.)
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.
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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stephen_usher
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- Posts: 7376
- Joined: 13 Nov 2017 19:19
- Location: Oxford, UK.
Re: The daemon Mac IIci: Can it be fixed?
It works!
So, the NuBus is operational.
So, the NuBus is operational.
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.
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
- Site Admin

- Posts: 14890
- Joined: 17 Aug 2017 19:40
- Location: Essex
Re: The daemon Mac IIci: Can it be fixed?
:girldance: :girldance: :girldance:
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...
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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- Posts: 7376
- Joined: 13 Nov 2017 19:19
- Location: Oxford, UK.
Re: The daemon Mac IIci: Can it be fixed?
The system really flies with the new graphics card, even under 7.5.5. The card isn't even accelerated.
However, it is allowing the 25MHz 68030 to run at full speed without the video sub-system getting in the way.
However, it is allowing the 25MHz 68030 to run at full speed without the video sub-system getting in the way.
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.
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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frank.lukas
- Posts: 812
- Joined: 19 Jan 2018 11:52
Re: The daemon Mac IIci: Can it be fixed?
Nubus run at 10Mhz I think ...
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stephen_usher
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- Posts: 7376
- Joined: 13 Nov 2017 19:19
- Location: Oxford, UK.
Re: The daemon Mac IIci: Can it be fixed?
It does.
Hmm... it feels wrong bidding for unpopular (but probably working) Apple machines on eBay because I just want the floppy drive, but it seems to be the cheapest way to get one.
Hmm... it feels wrong bidding for unpopular (but probably working) Apple machines on eBay because I just want the floppy drive, but it seems to be the cheapest way to get one.
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.
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.
-
stephen_usher
- Site sponsor

- Posts: 7376
- Joined: 13 Nov 2017 19:19
- Location: Oxford, UK.
Re: The daemon Mac IIci: Can it be fixed?
Outbid in the last minute on the Performa 630, so no new floppy drive.
I've got a ZuluSCSI unit on order but it's from AmigaKIT (*spit*) as they seem to have the UK manufacture/distribution rights. It's therefore probably going to be weeks until the order is even acknowledged but the money will come out of my account straight away.
I've got a ZuluSCSI unit on order but it's from AmigaKIT (*spit*) as they seem to have the UK manufacture/distribution rights. It's therefore probably going to be weeks until the order is even acknowledged but the money will come out of my account straight away.
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.
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.
-
stephen_usher
- Site sponsor

- Posts: 7376
- Joined: 13 Nov 2017 19:19
- Location: Oxford, UK.
Re: The daemon Mac IIci: Can it be fixed?
Bought a rather yellowed but otherwise functional (except for hard drive) LCII for a bit more than I was expecting, just for the floppy drive, but still cheaper than a bare drive!
I'll remove the drives, recap and retrobright the machine and sell it on I think, to recoup some money. LCIIs are slow and restricted relative to the IIci.
I'll remove the drives, recap and retrobright the machine and sell it on I think, to recoup some money. LCIIs are slow and restricted relative to the IIci.
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.
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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Tomswork
- Posts: 776
- Joined: 22 Nov 2019 22:05
Re: The daemon Mac IIci: Can it be fixed?
The lc2 is a good machine to rescue it the caps and battery has not killed it. Good place to get the drive
Tom
Tom
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