Search found 6 matches

by v01d
Sat Oct 13, 2018 2:24 am
Forum: Hardware
Topic: Repairing an ST with dead floppy & ACSI
Replies: 9
Views: 2433

Re: Repairing an ST with dead floppy & ACSI

I'd just like to add that you don't need a state of the art oscilloscope to troubleshoot these old computers. There are cheap PC based ones to be found at aliexpress, banggood and other chinese sites, aswell as cheap older used ones. Depending on where you live, you might also have an active comput...
by v01d
Sat Oct 13, 2018 2:23 am
Forum: Hardware
Topic: Repairing an ST with dead floppy & ACSI
Replies: 9
Views: 2433

Re: Repairing an ST with dead floppy & ACSI

Well you can measure the impedance on each data line against ground, they should not be 0 ohms. Also you can measure them between each other, again there should be at least couple of kOhms, certainly not short. Thats as far as you can get with just multimeter. I checked the data lines on the 1772, ...
by v01d
Tue Oct 09, 2018 11:49 am
Forum: Hardware
Topic: Repairing an ST with dead floppy & ACSI
Replies: 9
Views: 2433

Re: Repairing an ST with dead floppy & ACSI

DMA controller is common component to both ACSI and FDD and actually might be the one to blaim. But certainly, remote debugging can be a little tricky ;) WD1772 floppy controller is another suspect, they are easy to kill and actually it could permanently pull down data lines (shared with ACSI port)...
by v01d
Tue Oct 09, 2018 11:39 am
Forum: Hardware
Topic: Repairing an ST with dead floppy & ACSI
Replies: 9
Views: 2433

Re: Repairing an ST with dead floppy & ACSI

Yes... definitely: do not try anything without proper knowledge! Or do you dare to repair your TV set? Give it to someone capable of repairing it. Totally fair comment, but where's the fun in that? ;) And, yes I do dare. I'll be the first to admit I'm a complete noob at this, but the options are: l...
by v01d
Mon Oct 08, 2018 10:03 am
Forum: Chat forum [ENG]
Topic: The Obligatory 'Introduce Yourself Thread'...
Replies: 559
Views: 216336

Re: The Obligatory 'Introduce Yourself Thread'...

Hello everyone, from Australia! My very first computer was a TRS-80, but I soon upgraded to the ST, and man that was an upgrade. It stuck with me too, influencing my computing life ever since. I held onto it even when I moved on to other computers. It just had so much nostalgia. Sadly its PSU explod...
by v01d
Mon Oct 08, 2018 9:46 am
Forum: Hardware
Topic: Repairing an ST with dead floppy & ACSI
Replies: 9
Views: 2433

Repairing an ST with dead floppy & ACSI

Hey everyone. I have two STs. One is my original that is no longer working, and another I bought more recently which is. I'm using the working one to try and troubleshoot and figure out what needs replacing in the busted ST. The busted ST has a dead PSU, and I'm fairly sure it took out some other pa...

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