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The magic smoke was released from my solar analytics monitoring system. What was the culprit?
Also Dumb Dave™ gets ZAPPED!
Forum: https://www.eevblog.com/forum/blog/eevblog-1511-my-solar-analytics-system-failed/
Solar Analytics install video: https://www.youtube.com/watch?v=dEqlOj6_m0Q
Weird current transformer arrangement: https://www.youtube.com/watch?v=k2_mJtAeaog
00:00 - Solar Analytics monitoring system failure
01:58 - Contact probing mains voltage check
03:08 - Inside the infamous fuse box
04:11 - Bench teardown
04:36 - Hey, this thing rattles, WTF!
06:04 - Dumb Dave gets ZAPPED!
08:22 - The missing diode
09:51 - Yuck!
10:59 - The AMAZING resistor!
12:47 - For the MELF fanboys
14:16 - This Supercap looks suspicious...
17:09 - It spewed its guts
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#ElectronicsCreators #solar #fail

By YTB

24 thoughts on “Eevblog 1511 – solar analytics system fail! dave gets zapped!”
  1. Avataaar/Circle Created with python_avatars Valenorious says:

    ElectroBoom approves of the pain inflicted in this video.

  2. Avataaar/Circle Created with python_avatars Rorschach1024 says:

    If yall used a reasonable line voltage like civilized countries do, it wouldn't have hurt so damned much! =b

  3. Avataaar/Circle Created with python_avatars Rob65 says:

    When detecting the 2 supercaps in series I immediately got concerned about them being balanced.
    @gorak9000 mentioned this too: supercaps don't like to be overcharged to a higher voltage and when placing supercaps in series there should always be some protection to prevent that from happening.
    Balance resistors are great for small caps (we used to design high voltage capacitor banks that way) but for those large supercaps balancing resistors are not enough. At least some zener diodes or even better one of those active balancing chips especially designed for supercaps should have been used. But writing this I do remember that, back then, I was advices to just place balancing resistors over my supercaps by a component supplier.

  4. Avataaar/Circle Created with python_avatars Erik Andersson says:

    Constant vigilance is needed so that captain zap brannigan don’t make love to you, just one moment is all it takes, apparently. 🙂

  5. Avataaar/Circle Created with python_avatars Tim Savage says:

    Are there any models of energy monitoring tied to a stupid cloud service?

    I currently have two systems in my house one from the solar installation that uses 3G and the other from the hot water system that connects to a gateway over powerline and then to Ethernet. Neither of them can be queried directly for information, have to use an app with an undocumented API. I have already reverse-engineered one to integrate the data into Home Assistant, but it's a bit silly sending the data to a cloud service to just bring it back again, and assuming the company doesn't go belly up or abandon the service.

  6. Avataaar/Circle Created with python_avatars Gabriel Ionescu says:

    It would be nice a repair video of that device…

  7. Avataaar/Circle Created with python_avatars GRC says:

    Had Issues with nesscap supercaps in the previous company, back in 2015 so it's similar date with your product. They often leaked and coroded the PCB, althoug we were using much bigger size 55F-60F I recall.

  8. Avataaar/Circle Created with python_avatars Gordon Welcher says:

    Is that the way fuse boxes are made down there?
    Just bolt the breakers on and wire them in the back?
    Yank breakers are much neater.

  9. Avataaar/Circle Created with python_avatars RobR386 says:

    I zapped myself on an amplifier board when I was fixing my minidisc mini system, same way by putting my finger across a charged cap 🤣

  10. Avataaar/Circle Created with python_avatars tweed532 says:

    Must have been a 'zap Dave day', as I got a 'tingle' changing the back light led strips in my LG TV, even though it had been powered down for over 8 hrs!.. Darned led driver psu caps… Cheers from a miffed Dave in the UK..😟

  11. Avataaar/Circle Created with python_avatars Ein Felder says:

    Speaking of electrical zaps – years ago I was mowing the paddock with an old Victa which had the fuel tap just above the spark plug, and the only way to turn the thing off was to close the fuel and let it run out. I woke up about 10 feet behind the mower on my ass – the mower was stopped so it either ran out while I was out, or I stole all the spark……. probably 10 years old at the time.

  12. Avataaar/Circle Created with python_avatars hallcrash says:

    Dave almost died in this video.

  13. Avataaar/Circle Created with python_avatars Drew says:

    You almost let the "magic smoke" out of yourself with that CapZap mate. Glad you had enough charge left in you to finish the video.

  14. Avataaar/Circle Created with python_avatars Wintersky136 says:

    Why don’t you replace your board with a modern schneider or hager?

  15. Avataaar/Circle Created with python_avatars SeanBZA says:

    New one will fit in the same box, just will have a nice big DIN rail box to hold all the breakers and other DIN rail mounted units, with the meters now all being on the top row in a line. Plenty of space then for extension.

    When you replace the heater, insulate all the hot water pipes both outside and inside the roof, so as to minimise the heat loss from the long runs.

  16. Avataaar/Circle Created with python_avatars donepearce says:

    The gunk under the resistor. Is it the remains of the glue dot?

  17. Avataaar/Circle Created with python_avatars Andrew Dollins says:

    That is one rats nest Dave, Dave why are you taking my circuits apart you are shocked for it the thumb Dave, yep I think this is an overload Dave. That is a overload Dave…..

  18. Avataaar/Circle Created with python_avatars jugularSignal says:

    I haven't seen every video, but I've been watching for years and this is the first time I've seen Dave get zapped.

  19. Avataaar/Circle Created with python_avatars E Hiebert says:

    Thanks for the video.
    The resister needs to go straight to the pool room.

  20. Avataaar/Circle Created with python_avatars DGO says:

    Capillary action in action.

  21. Avataaar/Circle Created with python_avatars Meta Observer says:

    shifty eyes appears to notice a lack of RCD (after noticing the same during a power company directed fault test at my place)

  22. Avataaar/Circle Created with python_avatars valimakm says:

    The isolation between AC mains and secondary circuit does not look safe on the power supply board. The 3G antenna is accessible so there should be double/reinforced insulation on that power supply. This kind of equipment should be designed taking over voltage category III requirements into consideration.

  23. Avataaar/Circle Created with python_avatars CampKohler says:

    You are now an official member of the ElectroBOOM club!

  24. Avataaar/Circle Created with python_avatars Solar Analytics says:

    Oh no! Sorry to hear the device is dead. We'd love to help you out and will be in touch!🌞

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