Re: Denon RCD-M40 "Protection Mode: Power", couldn't reset.

I don't know your experience level but based on the limited description of the fault symptoms and the fact the receiver appears to intermittently work, I would check the voltages on the supply rails while testing for dry joints (flexing the PCB). You may be able to reproduce the fault at will and identify the area that needs attention.

If you can obtain the service manual or at leas the schematic it would be useful.

Re: Cambridge Audio Azur 550A Power Supply Cap Replacement

Hi stj and redwire,

Thanks for your replies and advice.

It looks like didn't miss out much with the most sensitive parameters for my particular cap requirements. I was thinking I might be better focussing on longer life caps than the ones I found first off and you have confirmed that is worth doing- thanks.

I want to try to stick with the original cap sizes (18x33.5), so I will continue looking for similar caps to the ones you have suggested, but the parameter figures are useful to...

Hi,

I isolated a power supply failure in my Cambridge Audio Azur 550A to a shorted filter cap (C42, page 37 - see service manual attached) on the +45V supply of the right-hand channel PCB. The faulty cap is a Cambridge Audio branded "Audio Grade" 2200uF, 63V, 105°C 18mmx35.5mm (see attached photo), for which CA have refused datasheet information and the supply of a replacement(s) as they advise they do not supply these items to "end users".

Since audio grade caps rarely appear available at more than 50V (105°C) it has me wondering whether or not...

Re: New Members - please post your introductions here

Hi, Tony, electronics repairs for many years in UK