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why don't phone manufacturers make deliberately phone repairs harder for profit?
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IanB:

--- Quote from: langwadt on October 09, 2022, 09:42:12 pm ---
--- Quote from: IanB on October 06, 2022, 03:12:52 pm ---Take two brand new identical phones and swap a part from one phone to the other. The swapped part won't work in the other phone, even though it is the identical genuine part.

--- End quote ---

just to play the devils advocate, it could be argued that that prevents stolen phones becoming a source of hard to get or expensive parts

can you do much else with a stolen phone?

--- End quote ---

That's an interesting point. Given that a stolen phone can be locked, making it impossible to activate, a stolen phone becomes more or less worthless. I discovered this not long ago, to my own amusement, when I found that even doing a factory reset and attempting to reinstall the OS from scratch would not work without using an appropriate unlock key. Basically, without valid authentication, the phone was bricked.

Luckily I was an authorized user and had access to the unlock key, but it was an enlightening discovery.
strawberry:
is there statistics 'stolen vs forgot damn key' ?

they dont think that demand for this LCD will increase by 15% and need to focus on this model
they think that they will get some 10USD to buy crack or pay dept (countless stories people sold everything for pennies)
antenna:
We need to save the planet!  Go Green!  Buy an electric car!!! 

...And make sure you have the latest and greatest $2400 disposable phone so you can sneak in the trash 2 years from now. 

I guess with how things are going, by 2030, we will probably need the landfill lithium from the phone and auto industry seeping into the groundwater anyhow just to keep people "level".   They point at the air and tell us we need to fix it while they pollute everything under it making bank on generating solid/soluble wastes.  Removing the right to repair is China's payback for recycling.
TimFox:

--- Quote from: coppercone2 on October 09, 2022, 07:59:36 pm ---
--- Quote from: Infraviolet on October 09, 2022, 02:49:39 pm ---"how much of a burden is 50/60 hz and voltage levels in different countries to exports ?"
Minimal a burden thesedays, because most devices thesedays have a transformer based power supply which can take any plausible voltage or frequency (either by a switch between modes or automatically) which then supplies the low voltages (24/12/5/3.3V) that the device actually uses internally.

--- End quote ---

yeah because it got standardized when it was already almost too late. read about the history like 1910's. They had every frequency you can imagine and the power company sold you motors n shit that ran on their frequency only!

And dude it still sucks if you worked in design you know that it always makes it harder because the voltage level of the parts and stuff. It occupies someones time, even if the methods are well figured out. Resources, regulations, tests, etc. For instance you need a stupid variable frequency inverter in most design labs that do mains just to test it. It raises the barrier to entry.

The point is not that its hard, but that its overhead and extra work.

Imagine that frequency range was 10-200Hz between 80 to 350V, for regular houses.

--- End quote ---

50 vs. 60 Hz gave Japanese electrical manufacturers an advantage, since roughly half of Japan's territory is on 50 Hz (including Tokyo, thanks to AEG) and the other on 60 Hz (including Osaka, thanks to GE).
The Japanese factories I visited always had both power frequencies available for production test.
james_s:

--- Quote from: TimFox on October 12, 2022, 08:57:26 pm ---50 vs. 60 Hz gave Japanese electrical manufacturers an advantage, since roughly half of Japan's territory is on 50 Hz (including Tokyo, thanks to AEG) and the other on 60 Hz (including Osaka, thanks to GE).
The Japanese factories I visited always had both power frequencies available for production test.

--- End quote ---

It surprises me that they haven't merged this by now. Most 50Hz gear will work just fine on 60Hz although the other way around is not always true. These days inexpensive point of use frequency converters are feasible for things like clocks and timers.
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