General > General Technical Chat
What ever happened to TV technicians?
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SiliconWizard:

--- Quote from: coppice on May 07, 2022, 10:14:55 pm ---I guess TV repairers went away when the market went flat. :-\

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While repairing modern TV sets requires less "tweaking", there still are lots of things you can do. The main reason for not doing it, as some have said, is cost, not feasability.

I've repaired my Samsung TV a couple years ago - a leaky cap in the power supply board that would prevent it from starting altogether. Something extremely common. You must like it when designers put electrolytic caps right next to heatsinks. And I mean, not a few mm away, but literally stuck to the heatsink. :-DD
A couple bucks and some work were worth it compared to binning the TV set and shelling out a few hundreds bucks instead. It's still working find to this day.

Sure some repairs can be a lot trickier, say if it's a bad solder joint on a BGA chip, which also happens. But can still be done (as long as you can spot the fault), or you could also change the whole faulty board. Mind you, old TV repairers also did this sometimes when they couldn't find the fault.

janoc:

--- Quote from: tggzzz on May 08, 2022, 10:13:20 am ---
--- Quote from: janoc on May 08, 2022, 07:41:00 am ---Also, in France they have different types of "baccalauréat" (the big exam at the end of high school - "lycee") with different "tracks" focusing in different subjects. And that is where if you want to study e.g. engineering you need to graduate with the right type of "bac" to be admitted. This is different from other countries.  Perhaps that's what was meant.

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Im the UK you will have had to have 3 appropriate A-levels, e.g. maths (pure and/or applied), physics and other STEM subjects. That means that individuals will have specialised for the last two years.

It is likely countries that were part of the British Empire have something similar.

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Possibly, not familiar with the British/UK system. However, e.g. in Slovakia all you legally need to study at a university (any university, regardless of subject) is the final exam from the high school. And then passing the admission exams of the chosen university unless you qualify for a direct admission or the uni doesn't do admission exams.

So in theory you could go study electrical engineering even though you have never seen a multimeter in your life because you have graduated from a grammar school and not a vocational school.

In fact, most people who go to universities there do so from the generalist grammar schools, students coming from the vocational ones are an exception because they usually lack background in mathematics, physics and other subjects that are taught only to a much lesser degree there. The more practical, industry-focused stuff they teach at the vocational schools is rarely useful at the uni - but people without a solid math/physics background tend to flunk out in the first year already.
NiHaoMike:

--- Quote from: cdev on May 08, 2022, 04:56:17 pm ---Old audio equipment is often better than new audio equipment so is often worth fixing.

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I assume you're referring to build quality since modern transistors and opamps perform vastly better than old ones. They're still improving albeit well into diminishing returns.

I also read claims that old music (especially from the days of tube amps) was mastered with technical limitations of that era consumer equipment in mind and sound "wrong" on modern equipment, similar to retro games looking really poor on a modern gaming monitor.
David_AVD:

--- Quote from: NiHaoMike on May 08, 2022, 01:40:15 pm ---
--- Quote from: David_AVD on May 08, 2022, 11:07:24 am ---I've never been into TV repair, but have gotten back into consumer audio equipment repairs in the last few years.

There are fewer techs around and more people wanting their old (1970s' to 2000s') gear fixed now.

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A lot of that is likely the return of LPs and modern audio equipment being designed for digital input with analog input as an afterthought.

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You can get phono preamps that do the job and they cover a wide range in performance and price.
David_AVD:

--- Quote from: cdev on May 08, 2022, 04:56:17 pm ---Old audio equipment is often better than new audio equipment so is often worth fixing.

--- End quote ---

Better is a very subjective thing in the audio world. Some of the choices come down to nostalgia and perceived an actual differences in the sound.

Sometimes the way that the tone controls work (frequency, slope, etc) and how the speakers interact with that can make quite a difference.

Everyone's hearing, preferences and past experiences are also different so it's not always a specs comparison.
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