- Jul 24, 2013
- 16
- 0
- 10,560
My Denon AVR 15-13 5.1 receiver has developed the habit of randomly shutting itself off causing the power light to blink red at an interval of twice a second. I disconnected all the speakers and peripherals, even the subwoofer, but it still keeps shutting off. Sometimes it works perfectly, all audio channels crisp and present, for a week or more at a time before it shuts off. Sometimes it shuts off within a couple minutes over and over for days on end every time I try. Minutes, hours, weeks, days, I never know when it's going to shut down.
I opened it up and sprayed with air duster. I sprayed out and checked the terminals for loose wire. Oh, on that note, my speaker wire terminated bare. I had no banana plugs or anything similar because it seems my receiver type won't support it; it just has small, plain clamps. I didn't solder the ends because I read that that can reduce the audio quality.
Another thing: I bought this factory refurbished a few years ago and noticed (just recently when I first opened it) that several of the cylindrical battery-looking objects have a rock solid white substance that seemed to have dripped from the top and solidified, sometimes into small pools around the base. The substance has the hardened remnants of tiny (what appears to be) bubbles. I realized this is probably safe and intentional because the vertical circuit boards have the same drip formation but flowing sideways towards the board itself instead of downward onto the bottom of the unit indicating that this happened while all the PCBs were removed and sitting horizontally. So this appears to be part of the refurbishing process.
I'm not at all experienced with av receiver repair but I visually inspected the inside and didn't see any signs of burnt or blown plugs or fuses. I could be wrong though. Does anyone have any ideas as to what the issue could be and how to fix it? I'm willing to try and learn advanced methods since I refuse to pay nearly $200 to have it repaired when I could buy a new one at that price. Thank you, everybody, in advance.
I opened it up and sprayed with air duster. I sprayed out and checked the terminals for loose wire. Oh, on that note, my speaker wire terminated bare. I had no banana plugs or anything similar because it seems my receiver type won't support it; it just has small, plain clamps. I didn't solder the ends because I read that that can reduce the audio quality.
Another thing: I bought this factory refurbished a few years ago and noticed (just recently when I first opened it) that several of the cylindrical battery-looking objects have a rock solid white substance that seemed to have dripped from the top and solidified, sometimes into small pools around the base. The substance has the hardened remnants of tiny (what appears to be) bubbles. I realized this is probably safe and intentional because the vertical circuit boards have the same drip formation but flowing sideways towards the board itself instead of downward onto the bottom of the unit indicating that this happened while all the PCBs were removed and sitting horizontally. So this appears to be part of the refurbishing process.
I'm not at all experienced with av receiver repair but I visually inspected the inside and didn't see any signs of burnt or blown plugs or fuses. I could be wrong though. Does anyone have any ideas as to what the issue could be and how to fix it? I'm willing to try and learn advanced methods since I refuse to pay nearly $200 to have it repaired when I could buy a new one at that price. Thank you, everybody, in advance.
/www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=voltage+meter
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