Re: Tablet from Aldi
Originally Posted by
Realist
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You're not paranoid to be worried about these things. There are specific reasons why this stuff fails.
One reason is that some years ago the laws were changed concerning the make-up of solder that was used to fix all the electrical components on circuit boards. The laws meant they couldn't use lead any more. Lead solder had been reliably used for years and years. Now you can't use it. As a result, EVERY electrical item is now prone to suffering "dry joints" i.e. bits of solder that crack and thus lose the electrical signal.
Repairing domestic electronics hasn't been my job for many years but dry joints were a big problem long before the make-up of solder was changed.
Many faults occurred because of them.
Perhaps those who are in that line still have to deal with dry joints a fair bit but I can't think it would be more of a problem than it was in my day. Probably true to say that where it does happen, it might be almost impossible to remedy due to the miniaturisation of electronic equipment.
Printed circuit boards can have multi-layered tracks and I think that, where a poor connection does seem to be the problem, it could be where the tracks join through the printed circuit board layers rather than it being the solder.
Personally though, I haven't had any modern equipment go faulty due to dry joints or bad connections. In fact, it seems to me that electronic items are generally a lot more reliable than they used to be.