Search results

Hey folks, I'm thinking about a new project to start...and therefore I wanted to use a Apple Macintosh floppy FDHD a.k.a. superdrive on a regular PC mainboard/floppy controller. I've got some of these drives around in a box. Is this even possible? I know it's kinda different...

Hmm...you mean, to cut off the internal drive and just use the external? Nope, not yet - worth a try :)

OK strange - I did try out the dealer diagnostics disk again. Everything went through flawlessly (ok, I'm too stupid to use the keyboard test correctly) except the 5V memory test?? It starts loading from the disk and then nothing happens... I also did another memory direct test that went trough...

Final Update:  I also did repair every left bad trace on this motherboard - I also did the first wireowrk again - now it looks better, more professional ;) After I tested everything again, I did use some Urethan 71 (plastic based isolating lacquer) to finish and safe the polished traces from...

true...damn -but I need to do something with it xD I don't know how to locate the faulty area or parts, so I just want to start doing the oneday neccessary swap of these caps ;)

Yeah  :lisa2:  great job done! Actually I bought me two motherboards from eBay - they look very clean and in nearly perfect optical condition (untested). Especially one board has the original Lisa 1 / 2 Mouse port - my Lisa 2/5 board already has the "modern" port, so I will swap my motherboard...

Hmm... I'm actually that far to just swap the few capacitors on the board first and hope to fix the issue ... I don't have anyone near me who could check it or help with oscilloscope :-/

JUST A QUICK UPDATE: it's alive and running again [ :D ]  I finally found the bugger...it was just a broken trace between the lines R1 to C15/R15. I measured every part and trace again and finally found a missing signal - so d*mn easy at the end - no parts needed to swap, Did a quick solder...

OMG! Wow - good job ;D  Well, for my serial connections, I assume I have to do the same...- besides my connectors/slots didn't look that much corrodet. What did yours look like? Have any pictures? I will swap the small parts and report back :) ...I don't want to remove the slots }:)

Ahh wait...maybe there was an misunderstanding ;) I didn't put the cardcage or boards into another working LISA - no, I just used my own LISA to test everything out. I did put the original Setup into my working LISA and there I have the same bad behavior with the CRT output. It is definetly...

Hmm, that's a good point - something I didn't think about... So - what could be in that logic 'circuit' that could be my problem? Are there any steps-by-step check ups to consider?

Hmm..nope :( it's the same behavior on cold or warmed up start - I tried to let it 'run' for a couple of minutes - 30mins was the longest time I waited. No changes at all - besides a very hot memory board resistor( I think that white, big 'resistor' on the memory board get's usually darn hot?)...

Yeah, if I would get any kind of working sceen on that CRT I would try these adjustment pods to stableize ;) The fun fact is: if I put MY motherboard with all the cards into THAT Lisa - it works perfectly - even the internal CRT. So,..I doubt it is any wrong adjusted pod on the CRT unit...

Hi, sure, just a few moments ago the upload was completed:  https://youtu.be/G-5XTGIdiIs Excuse my camera movements - this time I didn't use my tripod/stand :-/  it's just a short video of 2 sessions - just a short demonstration of the behavior. It's in gemran language - I will put some subs...

Yep, I did the same here - I did it with my 100% working setup in first place and second, with the defective motherboard... surprise, surprise  [:D] ]'>   as I can see on the external display, everything works like a charme - even booting up from the external ProFile into LISA OS. Now I'm...

Yes, I already re-seated every single IC. Cleaned the pins and after all I gave every chip a little extra push on the board while turned on - no sign of change. :-/ It just happens from one day to another...

Yeah  [ :D ]  that was a hell lot to polish away - a few days later after the celaning with that fibreglass pencil, I could feel these little fibreglass things all over my skin xD Just to be curious - every other part of the cardcage is working fine. the cardcage/motherboard I talk about, is...

Hi there, my beloved Apple /// won't startup anymore... if I power it on, there is just the red lamp on the motherboard and the white/yellow one under the keyboard which work as usual. No check or anything from the floppy drive and the screen stays blank. The only way to get something on the...

Can you even recognize the diagnostic beeps? Have you tried the external Video connector - just use an ordinary Apple Monitor // or /// - any other good CRT with FBAS should work too? Hmm I think it's one of these resistors (Pictures attached) - I'm sure the traces are fine...so?

I did just fix the traces between the Slots..not the ones for serial connection - this shouldn't be the problem here? I don't need serial ports at all - if everything else is fixed and working, I probably will fix them too. I also checked the CPU-Board, I/O- and as well the RAM-Boards. They all...