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  1. bushtech

    Denon AVR 1804 amp won't switch on

    10% doesn't leave me much room = 1320μf. My big concern is the size difference. Orig caps 31 x 63mm. The ones I'm seeing are generally less than half the size
  2. bushtech

    Denon AVR 1804 amp won't switch on

    Stupid me :mad:
  3. bushtech

    Denon AVR 1804 amp won't switch on

    Ooops, I obviously don't know what I'm talking about. I was concerned about the much larger size of the original 1200μf caps. I thought if I got 2 x 1200 and stuck them in parallel I could equate to the larger sized caps. When you say ~10% are you talking voltage or capacitance?
  4. bushtech

    Denon AVR 1804 amp won't switch on

    It doesn't look as if Samyoung make this cap anymore. The closest one I can find is 3300uf here: https://www.samyoung.co.kr/download/large/DL.pdf So I will probably be looking for a cap from a different manufacturer. I will go for 105C as davenn suggested but how far can I venture from the...
  5. bushtech

    Wi Lite wireless lighting switch

    Was 0.95Mohm using 20M setting on dmm
  6. bushtech

    Wi Lite wireless lighting switch

    Thanks St Edd 0.95M ohm
  7. bushtech

    Denon AVR 1804 amp won't switch on

    Thanks again davenn. Will do on the cleaning. Most of the replacement caps that I have found so far with my sucky internet connection are much smaller. Can I go to 1500μf and stick 2 of them in parallel?
  8. bushtech

    Denon AVR 1804 amp won't switch on

    Thanks davenn. Could they be the cause of the amp not switching on or do I need to keep digging? I see they are Samyoung DL (DL =audio) 63V 1200μf 85C caps. Quite big 31mm dia x 63mm. Going to be nearly impossible to find in South Africa. Have already checked RS here. What would be a decent...
  9. bushtech

    Denon AVR 1804 amp won't switch on

    One of the 2 big caps near A and C is slightly bulged on top. Do they come into play at switch on or only later when amp is being used?
  10. bushtech

    Denon AVR 1804 amp won't switch on

    Upload file not visible, probably my rubbish internet connection. Anyway, the plug at A supplies power to the transformer at B.With the unit on, if I pull the plug at A and probe the pins I get no voltage there. The plug at C supplies power to a small board at D, there is power there as pulling...
  11. bushtech

    Denon AVR 1804 amp won't switch on

    Grabbed the remote yesterday to switch on the amp, pushed button and nothing happened:(. Checked remote working by shining it at my phone camera and pressed button = working. Opened unit, checked fuse = working.Checked power cable, 220VAC arriving on board and red pilot light lit up as usual. I...
  12. bushtech

    Home Theatre Hook-up Help

    Read second posting here: https://www.walmart.com/reviews/product/10973173
  13. bushtech

    Creative T3200 speakers help

    try this: http://www.all-sun.com/EN/s.aspx?search=EM390&Input=Go%21
  14. bushtech

    Wi Lite wireless lighting switch

    I have started created the circuit in LTspice. My first foray into LTspice so huge learning curve and I hardly know what I'm doing. It's not finished but I'm trying to create the first part up to the Zeners.
  15. bushtech

    Wi Lite wireless lighting switch

    St Edd You were right and I was wrong at looking up the data sheet for the relay. I should just have looked at the relay where it states DC24V
  16. bushtech

    wireless alarm dashboard

    Probably. See here, you might get lucky in the future, if you're on Widows 10: http://www.windows10update.com/2015/11/iris-working-on-windows-10-app-for-new-smart-hub/
  17. bushtech

    Wi Lite wireless lighting switch

    St Edd You said: Damaged board Blue 11.1V . . . . . . . . . . .We can see that it is producing power, but loaded down. Orange 0.1V . . . . . . . . . .Looks like this supply is shorted to ground How do I troubleshoot Blue 11.1V as this seems to be the first problem?
  18. bushtech

    wireless alarm dashboard

    What OS is your laptop on?
  19. bushtech

    Wi Lite wireless lighting switch

    OK, so it looks as if the 692mV is the forward voltage of the diode
  20. bushtech

    Capacitors

    When you get to the bottom you might turn into the mad hatter
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