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  1. Martaine2005

    AC Power Adaptor Pinout // Adapt to battery power

    If you have a clamp meter, you can use that at each connection. Failing that, sounds like an ATX PSU with thousands of wires all coming from the same point on the PCB to simply be distributed.
  2. Martaine2005

    Air conditioner remote control

    That is of course another option. But using a secondary remote still makes it huge and loads of wiring. Deciphering the code could make it a lot easier but is probably a huge task in itself. Sometimes, KISS, (keep it simple..) is the easiest and cheapest way. If the unit turns on via the main...
  3. Martaine2005

    AC Power Adaptor Pinout // Adapt to battery power

    Put your meter in series with the supply wiring. Also remember to change the probes to Amps connections.’ The kind of connector you have with parallel wiring is typical of using’in house’ components already bought and re-using them. Or a few are used to save pennies from altering input stages...
  4. Martaine2005

    AC Power Adaptor Pinout // Adapt to battery power

    If you have plenty of batteries, parallel two or three of them to increase the current by two or three times. Remember, you can’t get more than you put in (minus losses). 8 or 10 batteries in parallel, 8 or 10 times the current = 8 or 10 times ‘run time’. Martin
  5. Martaine2005

    AC Power Adaptor Pinout // Adapt to battery power

    Have you opened the monitor and checked the working voltage?. hahaha, that’s funny :)
  6. Martaine2005

    Air conditioner remote control

    That would work but also make the remote control very cumbersome. But necessary for FULL control. If the units power switch (at least) turns it on low or similar state, then an automated relay could be used to simply power the unit on and off remotely via the mains supply. Martin
  7. Martaine2005

    AC Power Adaptor Pinout // Adapt to battery power

    I reckon they are fiddling the output figures. Maybe at a lower voltage, the amperage is higher. Martin
  8. Martaine2005

    Air conditioner remote control

    Using the switch on the unit itself, what state does it come on with?.
  9. Martaine2005

    Air conditioner remote control

    There is the question already asked by @kellys_eye . Does it turn on in last state?. Also does it require a touch button to turn it on or a switch that if left on and disconnected then reconnected to mains power, would it come on?. Martin
  10. Martaine2005

    restoring old garage door opener-receiver/transmitter

    Sounds like the receiver relay is faulty or dirty contacts. Martin
  11. Martaine2005

    restoring old garage door opener-receiver/transmitter

    Brilliant as usual Ed!):
  12. Martaine2005

    Air conditioner remote control

    I think that’s the most important question. As there are tonnes of home automation devices ready to use. From older X10, Byron, Ripple to more recent Alexa etc. Martin
  13. Martaine2005

    Selective Rotary switch

    Possible a rotary encoder. Here’s a description of the difference between encoder, potentiometer and how the work. https://www.arrow.com/en/research-and-events/articles/encoder-vs-potentiometer-how-to-choose Martin
  14. Martaine2005

    Equivalent~ish Mosfets for Power Inverter

    You could stack the mosfets so they share the load and run cooler?. Martin
  15. Martaine2005

    Xbox 1s problem

    Ok. First, you need to test the Xbox on another TV to rule that out. And the Xbox lead that connects to the TV. Once you’re happy that it’s definitely the Xbox, we can go forward by testing the outputs on the Xbox itself. Martin
  16. Martaine2005

    Xbox 1s problem

    Hi , could you give more information in an understandable fashion please?. Sorry, I couldn’t understand the question. Martin
  17. Martaine2005

    Simple, or so I thought. Creating circuit to transform 24vac control to 12vdc.

    Siri, call security. I did, I called Alexa. Alexa called Microsoft, Microsoft called Trump, Trump called Rishi, Now the whole world knows. Should have paid your monthly subscription to the device you bought and own:);)
  18. Martaine2005

    Rotel RA820A stereo amp no right channel

    Also, just viewing the other photos, there are many points that look like the traces have been scraped away. I’d definitely clean the boards first with IPA (as suggested) and then check the scraped or broken traces before another power check. Martin
  19. Martaine2005

    Rotel RA820A stereo amp no right channel

    Below F601, there’s a resistor. The track looks ‘scraped’ away rather than a blown track. Have you been scraping?. Also, 30 years sparky? Puts a 6A in a 4A?. To see if it ‘pops’. Electronics is not like a consumer unit. Ohms law tells you that another 3rd current will be present. Let alone the...
  20. Martaine2005

    Component identification

    See post #2 I think you forgot to help identifying the component?. Martin
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