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  1. Martaine2005

    I cant measure voltage on 100 picofarad capacitors on multimeter

    That is the best sentence I’ve read in years and how true it is. Do you mind if I use it to make myself feel wise? Martin
  2. Martaine2005

    Halloween Animatronics and Motion Sensor Switch

    Some of these PIRs work between 2.7V - 12V. They are online for £1.50.
  3. Martaine2005

    Halloween Animatronics and Motion Sensor Switch

    Ok. Yes I was referring to a ground connection from the printed circuit board. Adding a 5V supply is simple enough as you suggested. Leave the 5V wire from the foot switch disconnected. Connect the black foot switch wire to the OUT (sw). Is there any reason you cannot put a mains voltage PIR on...
  4. Martaine2005

    Halloween Animatronics and Motion Sensor Switch

    Before you make any connections, can you open the foot switch?. We need to know whether it is purely a switch interrupting the 5V supply. It may have a controller circuit, in which case wont work as I described. You threw me with “ getting 5V across both switch wires” and the black wire being...
  5. Martaine2005

    Halloween Animatronics and Motion Sensor Switch

    Yes, you explained it better than I did!. Your foot switch wire that has 5v can be connected to the PIR + (L) and and the - (N) to the PCB -. This can be found by locating a capacitor negative terminal (sometimes). The other wire from your foot switch can then go to the 3rd terminal (sw). This...
  6. Martaine2005

    Halloween Animatronics and Motion Sensor Switch

    Hi, PIRs need a constant supply. So L and N from supply (battery) and the 3rd is a switch line (sw). This is L to your device. The 4th, if it has one will be E (earth/ground). The device and the PIR will share the N. Martin
  7. Martaine2005

    Target Navtex Pro weather receiver approx. 1992.

    The question was “do you have photos of the board”. Hope this solves your confusion. Martin
  8. Martaine2005

    Found barely buried live wire in yard

    If it is live and just sticking out of the ground, I’d say an outhouse or shed was there at some point. You should have contacted them explaining that your mother-inlaw had a terrible accident while cleaning the garden. Get a cheque in from them!. Then explain that unfortunately she is still...
  9. Martaine2005

    Modify a cable connection to use 1 camera to 'feed' 2 units.

    Have a look for 3.5mm Y lead. It’s basically a headphone sharing cable. You might already own one.
  10. Martaine2005

    Christmas bears repair

    Hi Ricky, not how the forum works really. We try to help you help yourself. If you can start by adding a photo of the items, it might help us here at EP help you. Martin
  11. Martaine2005

    And now something weird

    I wouldn’t read too much into the details, it’s the BBC!. Martin
  12. Martaine2005

    Magnifying light voltages

    Forget what I just wrote. I think I have it. I hate a phone screen sometimes.
  13. Martaine2005

    Magnifying light voltages

    so Far, you have three in series. That’s probably it. So 1.7 or 2V each .
  14. Martaine2005

    Magnifying light voltages

    Sorry, with my scrolling. It looks in cases, you have two in series. Let me draw this out .
  15. Martaine2005

    I received a message of crystal diskinfo hdd

    @scatmanjohn . Where the hell did you get that name? @gamer87 is your best friend. Ask him. @gamer87 has other friends too. Ask them. They are full of knowledge.
  16. Martaine2005

    Magnifying light voltages

    You have a black pen ( if I can still say that). You must have a mixed colour to make red. Just join the dots, anode to cathode. It will become obvious. Or take a high res image and link to it. Zooming in is better than scrolling left and right with a phone. Martin
  17. Martaine2005

    Magnifying light voltages

    Try and work it out. You can’t really have more than three LEDs for 7V. 2V each plus current limiting. Could be higher of course depending on current. But more than likely a DC to DC buck is involved.
  18. Martaine2005

    Magnifying light voltages

    Why give up with the original board. Did you try with a lamp connected?. Should be fairly simple to see if they are series and paralleled but on a phone scrolling back and forth is not. I can see (I think) that you messed up at least twice with anode and cathode by scrolling. Hopefully somebody...
  19. Martaine2005

    Dead CELCUS LCD32S913HD

    As already stated, that is indeed a fuse. You have two large connectors top left and top right. I would check both for voltages. One on right (white) probably has multiple voltages, 3.3, 5, 9, 12 and possibly higher. The left one maybe the back light board. This may have high voltage of 200V...
  20. Martaine2005

    Question about SMPS repair

    I agree that fusible resisistors, NTCs, PTCs, electrolytic capacitors, rechargeable batteries etc have a shelf life. Whether it’s hours vs heat vs stress is dependant on temperature, quality, usage and age. They all play a part. Obsolescence or designed obsolescence is hear say. Older linear...
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