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  1. bushtech

    Denon AVR 1804 amp won't switch on

    Agree with you. I think I will replace all 3 caps as a matter of course. Cheap insurance while the board is somewhat accessible. Am I right in assuming that I just need good caps and not top quality audio caps.? Or should I go for top quality audio caps in any case?
  2. bushtech

    Denon AVR 1804 amp won't switch on

    The small cap C145 could be a suspect
  3. bushtech

    Denon AVR 1804 amp won't switch on

    I have now tested the other 3 sizable caps around the heatsink area Biggish cap: C144 Samyoung SMS 3300μf 35V Measures: 3675μf ESR 0.16Ω Vloss 1.9% Medium cap: C153 Samyoung SHL 6800μf 16V Measures: 6227μf ESR 0.05Ω Vloss 2.9% Small cap: C145 Samyoung (can't read series) 1000μf 35V Measures...
  4. bushtech

    Denon AVR 1804 amp won't switch on

    This is my ESR tester: http://www.banggood.com/86-Plastic-Shell-DIY-Meter-Tester-Kit-For-Capacitance-ESR-Inductance-p-956240.html?rmmds=search Although I'm still battling with the black art of interpreting ESR values :confused: Might as well be using Voodoo.:D
  5. bushtech

    Denon AVR 1804 amp won't switch on

    Fantastic! Thanks davenn. This will make my life a lot easier
  6. bushtech

    LG Flatron W2241S

    Yeah, me too. My guess is he wants too use it supply a specific DC voltage to test some component. Apologies for the OT
  7. bushtech

    Wi Lite wireless lighting switch

    Thanks for your help so far on this St Edd. Where do I go from here?
  8. bushtech

    Denon AVR 1804 amp won't switch on

    So the jury is still out on whether those 2 big caps are good or bad. Would appreciate it if somebody would care to comment on those cap readings. The service manual for this AVR is available here: http://manualmachine.com/denon/avr-1804-884-avr-1880/199246-service-manual/ Still trying to...
  9. bushtech

    Denon AVR 1804 amp won't switch on

    I think the plot is about to thicken rapidly. For starters those 2 big caps are 12000μf not 1200μf:eek: And "good" cap reading 13060μf, ESR=0.08ohm, Vloss= 1.3% "Bad" cap reading 13150μf, ESR=0.08ohm, Vloss=1.9% Now I don't know what Vloss is all about but the caps look OK to me. Am I missing...
  10. bushtech

    Denon AVR 1804 amp won't switch on

    Making progress, but how do you disconnect these white interboard connectors.? Are they soldered underneath each pcb? The one I'm talking about is to the right and slightly behind the white ribbon cable
  11. bushtech

    Denon AVR 1804 amp won't switch on

    Thanks for the warning dave. But after being connected for 15 years or so it takes a fair amount of persuasion. :oops:
  12. bushtech

    Denon AVR 1804 amp won't switch on

    Thanks. I did try one and got it disconnected. I stuck a small screwdriver in under the small flap that sits over the little notch that latches it.
  13. bushtech

    Denon AVR 1804 amp won't switch on

    Thanks eKretz. I'll give it a try
  14. bushtech

    Denon AVR 1804 amp won't switch on

    Nice. I think my receiver too old for muse's but we'll see where we go with this one. Would like to end up with a better receiver than when I started. Before I make a mess right at the start. How do you disconnect these light brown cable connectors?
  15. bushtech

    Denon AVR 1804 amp won't switch on

    Ouch! That looks horribly familiar. Now with all my new found knowledge on caps did you use any Nichicon Muse's in there? I'm thinking about replacing the caps. Just wish i knew more about it so that I could just replace the caps that are heavily involved in sound reproduction
  16. bushtech

    Denon AVR 1804 amp won't switch on

    Thanks davenn & ekretz. You are a great help. I now have a fair idea of what I'm looking for. I will now pull that board from the amp so that I can have a look at the other caps near heat sinks as davenn suggested. I'm looking at this board with fear in my eyes. It looks like a very very tricky...
  17. bushtech

    Denon AVR 1804 amp won't switch on

    Thanks. You reckon I can stretch to 1500μf? Which would be your pick of the bunch? My knowledge is unfortunately not good enough to make a good pick with so many variables
  18. bushtech

    Denon AVR 1804 amp won't switch on

    Scrap that. Min qty =800, Not in stock, lead time 11 weeks Back to the drawing board
  19. bushtech

    Denon AVR 1804 amp won't switch on

    I could probably modify the snap in connectors to make it work
  20. bushtech

    Denon AVR 1804 amp won't switch on

    I think eKretz is talking about physical size. Thanks for the explanation of why they now so small eKretz What about something like this? It is an audio cap. http://www.digikey.com/product-detail/en/vishay-bc-components/MAL215818122E3/MAL215818122E3-ND/5637500
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