The service manuals of old professional equipment are truly amazing, the schematics are shown in three different abstraction levels, every single connection is shown, waveforms at 100 different test points are drawn, every single component is listed, with step-by-step test and calibration guidelines. You can almost remove everything from the board and put it back together with a service manual.

Something that today's consumers can only dream of...

#retrocomputing #crt


@niconiconi I’m convinced most people have no idea what’s going on anymore, all the good technical workers are dead now and we’re just grasping at straws by comparison

@redneck_happy Considering those equipment typically costs 10,000+ USD, having good serviceability and documentation is to be expected.

Nowadays, comparable equipment only a fraction of the original price with high integration, is undeniably a true improvement, some serviceability is definitely lost, I think it's fair enough bargain.

However, the only problem is: many manufacturers are going full-Apple style with _negative_ maintainability...

Having grown up around this stuff, not quite so. I've seen this level of documentation for things ranging from toaster ovens all the way up to home computers. The Commodore 64 and 128 programmers reference manuals come with complete schematics for their respective platforms, plus datasheets for all the custom parts inside.

TVs and radios used to even have these details on a sticker *inside* the chassis at one time.

@niconiconi @redneck_happy
Completely agreed on the negative maintainability though. This is a disturbing Trend that I would love to see stop somehow. :-(

@vertigo @redneck_happy Completely agree on what you've said.

I used professional equipment as an example and disregarded customer products, simply because I wanted to compare apple to apple (pun not intented!).

@redneck_happy @niconiconi Perhaps because industry sucked the remaining good ones out of academia, so they're not there to teach any successors?

@freakazoid @niconiconi I dunno if there’s an easy explanation, and I’m probably just complaining.

I thought things would be more “put together” when i got to industry.

now that I’m here for a few years it’s apparently to me how many people operate with a very shallow understanding of science, engineering, etc.

Most people do mediocre work because they’re overworked and excellent work isn’t worth doing when you’re overworked.

nah, we still exist, just limited by lack of employer foresight and capitalist barriers to mainstream entry for our work.

A lot if makers and open source minds exist in the technically competent paradigm too.


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