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  1. kellys_eye

    Capacitor explodes on PSU

    What triac?
  2. kellys_eye

    Capacitor explodes on PSU

    Clearly there's an issue with the main bridge rectifier - the big black 'slab-like' thing AND, quite probably, shorted switching transistor(s).
  3. kellys_eye

    Best Ham Radio Transceivers (base station and mobile) for Long Range Communication in case of Disaster by Nature or Human.

    Nothing that you would find useful (to know) i.e. a 'vintage' Yaesu FT75 (CW/SSB, QRP set) currently but most of the rest of my stuff is all homebrew. If you're based in the USA then all you need is to reach the next State (or two) and you could do that very easily with 100W max and a decent...
  4. kellys_eye

    24v to 12v converter

    Do you know if it's a linear or switched-mode type? Most SM versions will work down to (practically) the output voltage.
  5. kellys_eye

    Best Ham Radio Transceivers (base station and mobile) for Long Range Communication in case of Disaster by Nature or Human.

    There is no 'right' answer. There are more variables than it's reasonable to discuss but one major variable is propagation - It has less to do with the actual equipment being used but a lot to do with HOW it is used. e.g I can communicate globally using 10W given the right conditions. I can...
  6. kellys_eye

    Year 2038 problem.

    Some people are concerned for the implications of human 'add-ons' that Elon Musk is pursuing but my position is that provided the use of such technology is by consent of the individual then anything goes. Any attempt to legislate such add-ons must be severely opposed. Stem cell technology and...
  7. kellys_eye

    Trolling

    My qualification on the determination is based on the 'trolls' inability to react to advice or assistance - as if they don't even bother to read (and certainly can't comprehend) any replies. The 'carry on regardless' attitude with the added doubling down on the issue at hand. As I say, on its...
  8. kellys_eye

    Need Help Identifying an 8-bit Microcontroller with RF Transmitter for Drone Project

    Yes! I thought it was a loose wire! Missed the board print too i.e. "ANT" !!! Doofus!. Anyway, everything else I said fits - ESP32 all the way.
  9. kellys_eye

    Need Help Identifying an 8-bit Microcontroller with RF Transmitter for Drone Project

    Where did you get that information from? I can't see any RF circuitry on that board - resonant circuit, antenna etc. It may be a bluetooth device - quite likely in fact. What is the original function of the board? I know it's a 'game' controller but is there anything else associated with it...
  10. kellys_eye

    Trolling

    <pedantry 'on'> that's "too" not "to" <pedantry 'off'> Life may indeed be short but there's no reason it can't be comfortable. You may not care about the reputation of the forum (since you display every sign of being interested in nothing but yourself) but others may actually give a sh1t.
  11. kellys_eye

    Trolling

    Open discussion. At what point in time do we (as a forum) make a decision that a contributor is just here to troll the forum? How many posts do we allow before we send the OP off to 'contemplate their ways' and, if they can't, don't/won't repair their ways, ban them permanently? I realise the...
  12. kellys_eye

    Momentary latching switches

    and the 'student' (a) fails to read or understand a word you wrote (b) goes off and invents their own interpretation which is completely wrong (c) argues their position despite having zero supporting evidence.
  13. kellys_eye

    I grow tomatoes really well, now I'm trying my hand at automating the entire process

    Solution offered in post #7.
  14. kellys_eye

    Capacitor explodes on PSU

    You are wrong. You can't just measure across the output transistor. You need to connect its collector to a supply via a resistor and measure the voltage across the c-e junction, looking for a 'switching' capability.
  15. kellys_eye

    Electronics makers - Anyone visited South Korea? Looking for recommendations!

    Definitely!
  16. kellys_eye

    Foxconn JA23332-810

    He's selling the stuff on eBay too......
  17. kellys_eye

    LCD driver test

    Just give it up. Seriously. You haven't a clue what you're doing, won't take advice on it and continuously poke about doing things that will inevitably lead to further problems thus compounding the issue. It's toast (in your hands).
  18. kellys_eye

    Capacitor explodes on PSU

    Remove the main switching device(s) - probably the ones bolted to the big heatsink, replace all the missing/defective components and power up. You should be able to measure the correct DC voltages which will 'prove' the main input side of the circuit is operational.
  19. kellys_eye

    Capacitor explodes on PSU

    Nope. Not melted, just some glue. Switching transformers don't fail like that.
  20. kellys_eye

    Capacitor explodes on PSU

    Can't see the 'blown pad' you're referring to.
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