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Apple Lisa 2/5 defective Video Output?


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#21 MarNo84

MarNo84
  • 6502
  • LocationRottenburg, Germany

Posted 03 September 2017 - 06:12 PM

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 :evil:


My Collection: www.marnoweb.de & www.classic-computer-collection.de & MarNoWeb @YT:  www.youtube.com/channel/UCyaeYrRq3IpohMUleaODrUw
I like: pre 1990 portable/luggable/compact & All-in-One Systems


#22 bibilit

bibilit
  • 68000
  • LocationParis area -FRANCE-

Posted 03 September 2017 - 07:52 PM

Didn't look bad at first, but most of them were not connected anymore.


Macintosh Classic and II ,CC, SE, SE/30,IIsi 25mhz(RasterOps video),Q 700,LC, LC III,LC475, PBook Wallstreet/Bronze/5300cs/1400c/100/Tibook Imac G3 slot-in, Bondi and G4 / PMac G4 sawtooth, QS, MDD, Yikes!, Cube, Imac Core 2 Duo, Ibook G3 (white/clam) G4 + Newton 120, eMate 300,Quicktake 150,  PowerCD


#23 MarNo84

MarNo84
  • 6502
  • LocationRottenburg, Germany

Posted 08 September 2017 - 09:57 PM

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 work on that broken trace and everything works like a charme again  :lisa2:

 

The last steps / work to do will be the still cut serial connectors. That's a lot of wirework to do - I will rethink about that - no one needs serial connectors on their LISA? Everything was cleaned and neutralized - so no future damage. Well, I think this is done - any future updates will come here on the forums and on my repair blog / on my homepage and yery soon on my YT channel too - especially that complete repair process was recorded on every important step. Soon I will upload a special repair video on my channel as well.

 

Thank you all for your assistance and your helpful advices :wub:

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Edited by MarNo84, 08 September 2017 - 10:00 PM.

My Collection: www.marnoweb.de & www.classic-computer-collection.de & MarNoWeb @YT:  www.youtube.com/channel/UCyaeYrRq3IpohMUleaODrUw
I like: pre 1990 portable/luggable/compact & All-in-One Systems


#24 mactjaap

mactjaap
  • 6502
  • LocationThe Netherlands

Posted 09 September 2017 - 09:09 AM

What a great story and happy end! Please post a link to your YouTube video if ready. I'm looking forward to see it. That you found such a small trace defective is impressive.

Collection: Apple II (ITT 2020), LISA 2, Macintosh 128K, 512K, Plus, ED, SE, Portable, PowerBook 100 and a FastPath5 router.
Looking for TCP/IP over LocalTalk?? I made something very usefull... Look at http://www.macip.net


#25 bibilit

bibilit
  • 68000
  • LocationParis area -FRANCE-

Posted 09 September 2017 - 12:53 PM

Happy ending for me as well :

 

 

IMG_1284.JPG

 

 

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Still a problem with the I/O but i have got video.


Macintosh Classic and II ,CC, SE, SE/30,IIsi 25mhz(RasterOps video),Q 700,LC, LC III,LC475, PBook Wallstreet/Bronze/5300cs/1400c/100/Tibook Imac G3 slot-in, Bondi and G4 / PMac G4 sawtooth, QS, MDD, Yikes!, Cube, Imac Core 2 Duo, Ibook G3 (white/clam) G4 + Newton 120, eMate 300,Quicktake 150,  PowerCD


#26 MarNo84

MarNo84
  • 6502
  • LocationRottenburg, Germany

Posted 19 September 2017 - 11:18 PM

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 too ;-) I think I will keep that repaired board maybe..just as an example/spare and give the other good board to my friend in exchange. Hmm, I will report back when they arrived at my door.


My Collection: www.marnoweb.de & www.classic-computer-collection.de & MarNoWeb @YT:  www.youtube.com/channel/UCyaeYrRq3IpohMUleaODrUw
I like: pre 1990 portable/luggable/compact & All-in-One Systems


#27 MarNo84

MarNo84
  • 6502
  • LocationRottenburg, Germany

Posted 24 September 2017 - 04:26 PM

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 :wink: After I tested everything again, I did use some Urethan 71 (plastic based isolating lacquer) to finish and safe the polished traces from future corrosion.

 

...and the funny thing is - after all these weeks of adventuring work on this motherboard - I got me 2 other motherboards on eBay :wink: one is in nearly perfect condition and works like a charm but the other one is a little bit messed up with uncleaned battery leakage on the slots and connectors. It's already in a cleaning bath with lemon accid :D the good / awesome thing on the uncleaned one:  it seems to be an original LISA 1 board with it's original metalframe - it has still the original writings and symbols for each port - especially the beautiful mouse port ;-) this means some exchange with my actual metalframe and motherboard xD

 

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My Collection: www.marnoweb.de & www.classic-computer-collection.de & MarNoWeb @YT:  www.youtube.com/channel/UCyaeYrRq3IpohMUleaODrUw
I like: pre 1990 portable/luggable/compact & All-in-One Systems





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