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  1. bushtech

    Denon AVR-1912 E2/EA

    Hi Michael Onkyo is another manufacturer like Denon, Yamaha, Nakamichi et al May I respectfully request you to rtfm pg 13 of the user manual - "Set up speakers" ;) If you don't have the microphone that is another bit of the Denon you are missing. I don't know if another microphone can be...
  2. bushtech

    Davis Vantage Vue weather station: stop replacing battery

    Thanks for a brilliant solution kellys_eye. Now those 3V CR123's are not mainstream. I have lot's of 3.7V 18650's and chargers. What are the chances that the weather station will be happy being fed 3.7V instead of 3V. Or will I have to go with step down transformer or buck convertor?
  3. bushtech

    Denon AVR-1912 E2/EA

    Have you done the speaker setup where you plug the Denon's mic into it and and get it to set sound levels.? I see some onkyo's wouldn't make a peep until speaker setup done
  4. bushtech

    help with using LEDs

    Welcome! To get you started can I point you at this: https://www.electronicspoint.com/resources/got-a-question-about-driving-leds.5/
  5. bushtech

    Davis Vantage Vue weather station: stop replacing battery

    Thanks kellys_eye. So box at base with 2 wires snaking up the pole and soldered to the 2 poles of the now empty battery spot in the station?
  6. bushtech

    Davis Vantage Vue weather station: stop replacing battery

    This weather station has a non rechargeable CR123 that goes flat about every 18 months. Now for a system that has a solar panel I find it unacceptable that every 18 months or so you either have to drop the mast to get to the station or grab a ladder and scale the mast (9m high in my case) For...
  7. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    I'm starting to think that *steve*'s suggestion of a series resistor and a relay might be the way to go. But consulting Dr Google came up with stuff like this: http://sound.whsites.net/project39.htm which is way above my pay grade.Can somebody tell me how to do this (in words of one syllable) or...
  8. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    Thank you for a great reply steve. Yeah, this power supply's original fuse survived countless turn ons, 2 disastrous shorts and lots of incorrect wiring and wrongly inserted components while attached to a series lamp. Yes, come a cross the famous blue ring tester being used often. Puzzled...
  9. bushtech

    Repairing Cummins Marine alarm board

    Looks like R8 next to it also got beat up. See if you can find a yachtie with the same panel to see if you can find the writing on that chip (if any). Contact board supplier to see if you can buy a replacement chip. You might get lucky. In any case replace that resistor first (cheap) and give...
  10. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    Thanks Audioguru As I said the transformer is attached to the plastic box with cable ties so no metal anywhere. I am rather dubious that the meter winding is causing it but I suppose I can unwind that lot and retest. But I would like to find a way to test the transformer. Can I fire it up and...
  11. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    Is there any way I can conclusively test this transformer?
  12. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    Still have not found the problem. Resistance of the primary winding = 6.2Ω Resistance of secondary winding = 0.4Ω No continuity between primary and secondary windings Toroidal mounted with cable ties so no chance of shorting there. No continuity between winding for meter and and any of the...
  13. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    WTH! Disconnected the secondaries, stuck in a new fuse, switched on and it blew immediately. Bridge rectifier?
  14. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    not sure what you mean by disconnect the secondary
  15. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    The big one is 12,000μf
  16. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    yes, no load connected and V and A pots turned down. Instant blow
  17. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    Thanks steve. Recent power ups have had long (10min+) delays between power ups, so no rapid cycling recently
  18. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

  19. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    Installed the thermistor, switched on and fuse stayed intact. Then did 3 widely spaced switchons with fuse staying intact. But the 4th time I tried the fuse blew (0.75A fuse) I just don't understand this, thought we had it licked
  20. bushtech

    Chinese Hiland 0-30V/Audioguru PSU build (down the rabbit hole)

    Lol! Thanks 73's de Edd. Will install it and report back. yeah, good ole Loxodontus Africana, not a fellah to be trifled with. Great song btw.
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