Did you know
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Did you know?
There was a time when every piece of electronic or mechanical equipment you purchased came with a complete schematic diagram enabling you to diagnose problems and buy any replacement parts you might need to repair it at any point in the future.
Ex: my Apple ][+ came with complete schematics. So did my first stereo amplifier.
This is the way.@jik I once rescued a moped from a neighbor's junkpile, found that it was sold through the Sears & Roebuck department store, and was able to order specific carburetor parts from the exploded view in their catalog to get it going again.
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Did you know?
There was a time when every piece of electronic or mechanical equipment you purchased came with a complete schematic diagram enabling you to diagnose problems and buy any replacement parts you might need to repair it at any point in the future.
Ex: my Apple ][+ came with complete schematics. So did my first stereo amplifier.
This is the way.I seem to have a recollection of it also coming with an annotated 6502 assembly listing of the ROM, or am I mis-remembering?
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Did you know?
There was a time when every piece of electronic or mechanical equipment you purchased came with a complete schematic diagram enabling you to diagnose problems and buy any replacement parts you might need to repair it at any point in the future.
Ex: my Apple ][+ came with complete schematics. So did my first stereo amplifier.
This is the way.@jik It really annoys me when I'm trying to work on a device (usually audio) that was discontinued like 15 years ago and the manufacturer won't give me a schematic because it's 'proprietary'.
I often end up finding that there's nothing really proprietary in there, but there are some serious design flaws. I then assume that's what they were trying to hide.
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Did you know?
There was a time when every piece of electronic or mechanical equipment you purchased came with a complete schematic diagram enabling you to diagnose problems and buy any replacement parts you might need to repair it at any point in the future.
Ex: my Apple ][+ came with complete schematics. So did my first stereo amplifier.
This is the way.@jik I think about if that did continue and if manufacturers would be interested in including a small booklet of schematics alongside your warranty card or even if it'd be feasible. We've come a long way from the Apple II+ after all.
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Did you know?
There was a time when every piece of electronic or mechanical equipment you purchased came with a complete schematic diagram enabling you to diagnose problems and buy any replacement parts you might need to repair it at any point in the future.
Ex: my Apple ][+ came with complete schematics. So did my first stereo amplifier.
This is the way.@jik Unfortunately it’s a myth. I’m collecting and repairing vintage audio equipment from 70-80’s, most of its service manuals have never been available for end users — it’s usually leaked/purchased from vendor certified service centers. Like, exactly in the same way as it happens with manuals and schematics for modern laptops and mobile phones. I’d say, now it’s even easier since Chinese contractors will happily sell you everything including non-production prototypes and diagnostic equipment
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I seem to have a recollection of it also coming with an annotated 6502 assembly listing of the ROM, or am I mis-remembering?
@mtnrbq65 that I don't remember, but you may be right!
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@jik Unfortunately it’s a myth. I’m collecting and repairing vintage audio equipment from 70-80’s, most of its service manuals have never been available for end users — it’s usually leaked/purchased from vendor certified service centers. Like, exactly in the same way as it happens with manuals and schematics for modern laptops and mobile phones. I’d say, now it’s even easier since Chinese contractors will happily sell you everything including non-production prototypes and diagnostic equipment
@jik Besides equipment itself I’m also collecting original service manuals for the devices I own, and for average end user from 70-s they were absolute 100% unobtainium. Even nowadays it’s very difficult/expensive to get them since not much of copies were printed
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@jik Pro tip: up until the 1980s it was not rare for there to be a slip of paper inside the appliance with the circuit diagram(s).
Ovens, stereo amplifiers, turntables, clothes washers, etc.
And unless someone took it out, those older pieces of hardware STILL have them inside.
Sometimes loose, sometimes pasted on to a surface.
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@jik Besides equipment itself I’m also collecting original service manuals for the devices I own, and for average end user from 70-s they were absolute 100% unobtainium. Even nowadays it’s very difficult/expensive to get them since not much of copies were printed
@jik Even more, for about 10-15% of my devices it’s impossible to find any schematics or manuals in any form like at all, no matter how hard you try or how much money you will to pay. So I’m also buying and translating old electronics magazines because sometimes they have top level overviews and measurements which is better than nothing
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Did you know?
There was a time when every piece of electronic or mechanical equipment you purchased came with a complete schematic diagram enabling you to diagnose problems and buy any replacement parts you might need to repair it at any point in the future.
Ex: my Apple ][+ came with complete schematics. So did my first stereo amplifier.
This is the way.@jik IBM PC came with schematics and BIOS code listings
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Did you know?
There was a time when every piece of electronic or mechanical equipment you purchased came with a complete schematic diagram enabling you to diagnose problems and buy any replacement parts you might need to repair it at any point in the future.
Ex: my Apple ][+ came with complete schematics. So did my first stereo amplifier.
This is the way. -
@Orb2069 @jik A few years ago I bought a vintage 2 track reel master tape deck. It came with a three ring binder of technical specs, schematics, and field repair and calibration guides, and a maintenance log.
(The electronics are on cards. I pulled out one of the record head control boards, and it has through-hole discrete components.)
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