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    A1200 circuit diagrams can be found here:- ...

    A1200 circuit diagrams can be found here:-

    https://www.amigawiki.org/doku.php?id=en:service:schematics

    Are any of the RAM chips getting warm after a while?
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    Have you been over the chips with a multimeter to...

    Have you been over the chips with a multimeter to check the VCC pins are all getting the correct voltage? You may have a bad RAM chip. Do you know anyone with an oscilloscope that can help you to...
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    Green screen is a Chip RAM fault, I suggest you...

    Green screen is a Chip RAM fault, I suggest you check all RAM Chip connections. Why was the board covered in flux, was it repaired previously?
  4. Closed This item has been sold and the seller has...

    This item has been sold and the seller has requested that the thread be closed.
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    Closed I have some huge holiday suitcases full of C64...

    I have some huge holiday suitcases full of C64 tapes, I'm talking hundreds. I'll take a look through to see if it's among those later this week.
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    I've got something like this one among my stuff,...

    I've got something like this one among my stuff, although mine isn't cased. There were a lot of these 'unofficial' cartridges made in Poland, the Czech Republic and other Eastern European countries...
  7. Thread: Amiga Laptop?

    by Merlin
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    Here's a link with pictures. ...

    Here's a link with pictures.

    http://www.amigahistory.plus.com/suzanne.html
  8. Thread: Amiga Laptop?

    by Merlin
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    A long time ago, there was Project Suzanne:- ...

    A long time ago, there was Project Suzanne:-

    http://wiki.classicamiga.com/Suzanne
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    Filled Hese's account has been frozen, until this...

    Hese's account has been frozen, until this transaction can be resolved between the parties concerned.
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    For Sale Unlikely I know, but I'll take third in line.

    Unlikely I know, but I'll take third in line.
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    Thread moved to AmiOracle as a more suitable...

    Thread moved to AmiOracle as a more suitable place to get a response.
  12. I presume that any transformer that puts out 10...

    I presume that any transformer that puts out 10 to 12v on the output at 2A before the rectifier will suffice for this PSU. I did assume that the transformer was 10v but checking the output under no...
  13. OK, after a second trip to Maplins and a group...

    OK, after a second trip to Maplins and a group huddle with then components nerd there, a 2A rectifier (slightly different design to the original and a tad bigger) and a 16v 4700uF electrolytic...
  14. OK, here's the circuit diagram for the C16 power...

    OK, here's the circuit diagram for the C16 power supply, as far as I can make out it's nothing special, it's a pretty standard PSU that's non-regulated.


    I'll be getting the parts to try and...
  15. It could be , Bas. I can re-use the fuse holder...

    It could be , Bas. I can re-use the fuse holder from the circuit board of the PSU, the rectifier bridge is fried and the smoothing capacitor in the PSU isn't marked with any values at all. I reckon I...
  16. OK, some new fuses later and I've connected the...

    OK, some new fuses later and I've connected the only 9v 1A regulated supply that I can find to the machine that is getting me some output on the RF cable. I'm getting two noise bars and garbled text...
  17. Thanks, mate! I need the glass internal fuse...

    Thanks, mate! I need the glass internal fuse before I can test the machine and I'll see if I can dig out a suitable 9v supply from my pile of stuff. Stay tuned...
  18. ARRGHHHHH!! Commodore electronics - so cheapskate...

    I recently acquired a Commodore C16 to complete my 8-bit C= collection and it arrived today. I was really excited, really really excited.

    The excitement didn't last. the machine was DOA, so I set...
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    Sold A1200s are at least 20 years old and never came...

    A1200s are at least 20 years old and never came in spearmint or peppermint flavours, so how can this be 'minty fresh'? :double
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    Sold Membrane confirmed as having arrived safely....

    Membrane confirmed as having arrived safely. Military grade packaging FTW! :arms
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    Found Membrane confirmed as having arrived safely....

    Membrane confirmed as having arrived safely. Military grade packaging FTW! :arms
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    Sold A known working A600 green membrane will be...

    A known working A600 green membrane will be posted to TheCorfiot on Monday for test purposes.
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    Found It will be safely packed and posted on Monday,...

    It will be safely packed and posted on Monday, Bas. :)
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    Sold Thread title edited to avoid confusion.

    Thread title edited to avoid confusion.
  25. Sold What information comes back from benchmarks...

    What information comes back from benchmarks programs about the CPU? The instability of the board and the original poster's comments about the CPU being a different one to the one you have identified...
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