🇧🇾 "Электроника 1" Б6-03 («Электроника 1» Б6-03): Часть 1 (Давайте удивимся!) [#TCE0666]

Let's have a look at this marvel of Soviet miniaturisation - their first LED watch which was manufactured for about 20 years between 1973 and the early 90s. My watch was manufactured in early 1991. I've seen it also referred to as "Terminator", "Pulsar" and "Model 3051". From what I've been able to establish, this particular model was manufactured in Minsk, BSSR - there seems to be a similar one manufactured in Moscow, RFSR ... ? It's all a bit confusing for a simpleton like me. I managed to find this example in Australia, not working, for AU$69 (about US$45). Working ones in decent condition seem to go for around US$230 and up. You want a pristine example WITH papers (паспорт) and case? Serious money. My watch doesn't work - it had two LR44/A76 button cells installed, both measured at 1.5V so it's not a flat battery. I tried putting 3V in from the bench supply - it drew just over 200mA and the main IC got very hot. This made me suspect a short. The LED elements are connected via very thin wires to the PCB tracks - two tracks were definitely shorted. I suspect that someone has been, ahem, rooting around inside a few times before me - there does appear to be damage with the very fine wires, some broken and that aforementioned short. Not to worry - I wasn't expecting to be able to do much with it. I was just happy to find one in Australia for a good price. And as the case is in good condition I'm hoping that one day I can pick up a known-working one, in a terrible case, for a cheap price. A Russian company has designed a modern version they call the "Elektronika 100", selling for ₽21000 (around AU$400 or US$260 in Dec 2025): https://www.technochas.ru/index.php?page=katalog&subpage=special_edition_elektronika&item=Electronika-100_komplekt There is an interesting replacement PCB design on Github that might be worth investigating as well: https://github.com/BenjaminSoelberg/elektronika-1 Further background: https://www.drive2.ru/b/469982947831710098/ https://www.drive2.ru/c/589331361614057815/ https://blog.alex-274.ru/2021/11/603.html https://dzen.ru/a/aTma-9o95WNuWFO- https://www.ixbt.com/live/offtopic/sovetskie-chasy-elektronika-ih-istoriya-i-unikalnaya-funkciya-kotoraya-byla-tolko-u-nih.html https://www.safonagastrocrono.club/the-digital-revolution-in-the-soviet-union-part-3/ https://electronika-5.ru/chasy/index.php?page=base_item&mid=14 00:00 ... Intro 05:00 ... СДЕЛАНО В СССР/MADE IN USSR 07:20 ... Cracking it open 11:00 ... PCB removed 13:45 ... Macro closeup 17:40 ... PCB removed from plastic surround 19:20 ... Testing with 3V (NOK) 20:40 ... Macro closeup of LED elements 24:10 ... Checking for shorts 28:45 ... Channel thanks & outro Check out my Patreon for regular blog-type updates between videos - there is a free membership tier and two paid tiers (US$2 and US$5). There is also a one-week trial for the paid tiers so if you don't think it's worth it, then cancel ... no hard feelings ... I appreciate any support, even if it's just subscribing to my YouTube channel! https://www.patreon.com/TheCluelessEngineer Outro song: "Coco Pops" by Snow Leopards https://youtu.be/3hrBip644zY