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  1. kellys_eye

    SEG Set top box turns itself on and off

    If the fault is anything more than a power supply issue or dodgy electrolytics then you'll need at least a 'scope and (possibly) the schematic to delve any closer to the fault - as mentioned, changing parts out indiscriminately is a pointless and fruitless task that will probably lead to more...
  2. kellys_eye

    How can I test a xlr charging port

    Can you post pictures of the internals of the charger? There may be something there that 'experienced eyes' can spot in respect to the zero output.
  3. kellys_eye

    Capacitive Force Sensor Circuit Project

    Sample and hold with peak detector. Both possible using op-amps.
  4. kellys_eye

    How can I test a xlr charging port

    Despite there being no 'visible' fuse on the outside of the charger unit there may be one INSIDE it that requires you to dismantle the charger to access. The fact that the charger output is 'zero' is peculiar and indicative of a potential internal fault. You don't have a lot to lose by opening...
  5. kellys_eye

    SEG Set top box turns itself on and off

    Careful - the circuit board uses plated through-holes and damaging the pads may interrupt the circuit from top side to bottom. That's not an electrolytic type.... changing parts 'randomly' won't get you any where. You'll most likely cause damage (as per your damaged pads) by 'messing around'.
  6. kellys_eye

    SEG Set top box turns itself on and off

    Measuring components in-circuit can produce all sorts of readings. For many, unless you have the schematic and can take adjacent parts into account, you have to lift one end to get a proper result. Small inductors WILL measure 0Ω on most meters - you need a high quality meter to read...
  7. kellys_eye

    What's the best way to learn any programming

    As above... the "Learn 'X' in 24-hours" series of books are always a good place to start.
  8. kellys_eye

    Electronics for prop control

    Your actions were those of a gentleman and scholar Hop. The actions of your prospective clients to take advantage without recompense shows them to be quite the opposite.
  9. kellys_eye

    Old 1996 issues of Electrical Design News or Electronic Design

    What Samsung product would that be? Given the nature of advertising I doubt they were the only publications the advert was in and I have access to many magazines of that era.
  10. kellys_eye

    Lead acid battery - how long can it be left discharged?

    Nothing worth worrying over imho. Leaving a battery discharged for 10 hours isn't a 'killer' situation and likely even difficult to discern without specialist equipment - assuming it is DISCONNECTED from the load when discharged. Leaving it connected is a definite no-no.
  11. kellys_eye

    Lead acid battery - how long can it be left discharged?

    Discharge even a deep cycle battery past 75% is dodgy as far as life span is concerned.
  12. kellys_eye

    Three Tank Control System

    Move the control signal from the valve that works to a valve that doesn't (or swap the valves). If swapping the valve/signal makes the 'other' device work the the valves are ok and your signal must be lost/degraded somewhere.
  13. kellys_eye

    Please I need help, does anyone knows what's this?

    Snip the capacitor lead and see if you still get the same smell occurring. If you do then resolder the capacitor and take it for granted that it's ok.
  14. kellys_eye

    Lead acid battery - how long can it be left discharged?

    Lead acid batteries are like muscles - they need exercise to be kept in top condition. Chemical depositions build on the plates over time (unused) but they can be recovered by various methods. Simplest way to maintain them is to use them. Otherwise why own them?
  15. kellys_eye

    Three Tank Control System

    What signal do you measure at the valves in both the open and closed positions?
  16. kellys_eye

    How can I test a xlr charging port

    Which fuse and where? If the charger output is (effectively) 0V the charger is faulty. Since you have two faulty chargers this is either very bad co-incidence (unlikely) cr@p product (possible) or something you did wrongly when first using them (probable). Either way, can you open one of the...
  17. kellys_eye

    Need electronic help with a custom transmission shifter

    I agree with Harald (above). Limit your design to changing the appearance of the commercial product - some wacky-looking, flashy-light/digital display mods etc - as trying to attempt the whole procedure is far too complicated/expensive.
  18. kellys_eye

    Tone for thought..

    Pointless. For the tests you want/need to make the test signal has to be variable in frequency. The scope calibration output is fixed.
  19. kellys_eye

    Three Tank Control System

    Is the water tank 'closed' i.e. is it creating a vacuum when discharging? Bit like holding a full bottle of water upside down...... drill a hole in the bottle and the water flows again.
  20. kellys_eye

    Get your tin foil hats out....

    Yeah, the 6502 suggestion was tongue-in-cheek but are we to understand that every device ever made will have some form of back door to nefarious peekers?
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