ratmice
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Post by ratmice on Apr 7, 2010 8:51:50 GMT -5
The other night I had a strange glitch occur with my UMC-1. I've had the unit for about 2 months. While in the middle of watching a hockey game through my Comcast motorola DVR box, via HDMI, the unit shut down. It then proceeded to go through about a dozen power on - picture and sound for about 10 sec - power off cycles. In amongst the recycling I did turn it off via the switch on the back for a couple of minutes, but when restarted it proceeded to go through additional cycles. Eventually it came on, and stayed on. I have no idea what made it start behaving again. Prior to, and since then, I have never had any power cycle issues.
Has anyone else experience this "ghost in the machine" type issue? I didn't see anything like it in the spreadsheet, although there are a few instances of it not booting up correctly.
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ICBM99
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Post by ICBM99 on Apr 7, 2010 9:03:24 GMT -5
Wow, nope I haven't had anything like that. The only power issues I've had are, not powering down fully, and a quick restart during power up occasionally.
I take it you weren't experiencing any weird power issues? Weather etc.
And you weren't sitting on the remote?! ;D
Hopefully it was an isolated incident.
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hemster
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Post by hemster on Apr 7, 2010 9:09:41 GMT -5
ratmice,
I haven't had that type of "ghost in the machine" but I did have the issue ICBM mentioned above... the UMC-1 would not power off as usual (i.e. flash the white power button 5 times and shut down). Had to turn the switch off at the back of the unit (quite a reach as my unit is in a cabinet with a shelf about 2" above it). Since then, no other weird issues.
I know that low voltage input can cause strange issues but I see you're using an APC-H15... same as I.
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ratmice
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Post by ratmice on Apr 7, 2010 9:15:59 GMT -5
Now that I think about it I have had the not powering down fully problem once before, and it definitely wasn't that. The remote was in my hand :-) I did think back to the discussion about low voltage - weather was fine, we rarely have power outages as all lines are underground. I did jump down to inspect the panel of the APC-15 - it was reading a steady 117V (pretty usual for my elec. service).
I'm stumped
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Post by mlkmgr on Apr 7, 2010 9:55:43 GMT -5
electronics are funky sometimes. i would suggest sending into emo but unless the process can be repeated, tech support will prolly tell you they can find nothing wrong and ship the thing back. may just have to keep an eye on it and "hope" it doesn't happen again. too bad you are not within the 30-day window or are you still--for a "new" exchange?
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ntrain42
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Post by ntrain42 on Apr 7, 2010 9:57:20 GMT -5
I had the exact same issue a few times and it was because of the APC I was using. The UMC-1 does not seem to like being plugged into anything other than a wall outlet or a true isolation transformer(not a power conditioner or surge protector with chokes inline). If your APC has battery back up as well and the UMC-1 is plugged into it, I would bypass it altogether.
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ratmice
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Post by ratmice on Apr 7, 2010 9:57:36 GMT -5
electronics are funky sometimes. i would suggest sending into emo but unless the process can be repeated, tech support will prolly tell you they can find nothing wrong and ship the thing back. may just have to keep an eye on it and "hope" it doesn't happen again. too bad you are not within the 30-day window or are you still--for a "new" exchange? I think we are all within the 30-day window until the FW comes out. |
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hemster
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Post by hemster on Apr 7, 2010 10:03:14 GMT -5
I had the exact same issue a few times and it was because of the APC I was using. The UMC-1 does not seem to like being plugged into anything other than a wall outlet or a true isolation transformer(not a power conditioner or surge protector with chokes inline). If your APC has battery back up as well and the UMC-1 is plugged into it, I would bypass it altogether. Other than the problem of not switching off completely (which happened once) I've had no issues using the UMC-1 plugged into the APC-H15. The power here in FL is very iffy especially with the storms and all the heavy usage of A/C units.. lots of brownouts, dips & sags and spikes. The APC has always worked well for me. All my gear except the subwoofer is connected through the APC (sub is on front wall and too far from the APC). I'm not convinced that the power conditioner cause problems with the UMC. |
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ratmice
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Post by ratmice on Apr 7, 2010 10:04:15 GMT -5
I had the exact same issue a few times and it was because of the APC I was using. The UMC-1 does not seem to like being plugged into anything other than a wall outlet or a true isolation transformer(not a power conditioner or surge protector with chokes inline). If your APC has battery back up as well and the UMC-1 is plugged into it, I would bypass it altogether. Nope no battery backup. We do have some voltage swings here, so I am inclined to keep it in line. If it happens again, I'll have to really start some troubleshooting - with an intermittent/isolated issue sure to be a hair-puller. |
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DYohn
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Post by DYohn on Apr 7, 2010 10:20:56 GMT -5
I had the exact same issue a few times and it was because of the APC I was using. The UMC-1 does not seem to like being plugged into anything other than a wall outlet or a true isolation transformer(not a power conditioner or surge protector with chokes inline). If your APC has battery back up as well and the UMC-1 is plugged into it, I would bypass it altogether. Other than the problem of not switching off completely (which happened once) I've had no issues using the UMC-1 plugged into the APC-H15. The power here in FL is very iffy especially with the storms and all the heavy usage of A/C units.. lots of brownouts, dips & sags and spikes. The APC has always worked well for me. All my gear except the subwoofer is connected through the APC (sub is on front wall and too far from the APC). I'm not convinced that the power conditioner cause problems with the UMC. My UMC-1 is plugged into a Belkin PF60 with no issues. |
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Post by MOSFET on Apr 7, 2010 10:34:20 GMT -5
Did you power on Zone 2? When I use Zone 2 and then power down the UMC it usually does not fully power down.
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DYohn
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Post by DYohn on Apr 7, 2010 10:38:04 GMT -5
Did you power on Zone 2? When I use Zone 2 and then power down the UMC it usually does not fully power down. I've used Zone 2, although only once to test it. I didn't notice any issues but then again one usage is not much of a test. |
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hemster
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Post by hemster on Apr 7, 2010 11:59:58 GMT -5
Did you power on Zone 2? When I use Zone 2 and then power down the UMC it usually does not fully power down. Thanks, I forgot about that! Yes, it's possible that a little button could have got pressed to power on zone 2 as I sometimes stumble with the remote in the dark!  I'll be mindful of this in the future should the issue recur.. a simple press of the zoner 2 power button should take care of it. |
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Post by stustan on Apr 7, 2010 12:35:32 GMT -5
Wow ratmice we share another issue!! The following is a post from about three weeks ago I posted in the "UMC-1 Reset?" thread:
"My UMC-1 has been fairly stable, until last night. It crashed and upon re-powering, the UMC began to cycle on and off until it crashed after a few cycles. While it was cycling it buzzed and hummed from within the chassis, not through the speakers. No amount of pulling the mains, or shutting the rocker switch on the back seemed to help. After a while I noticed my power conditioner/voltage regulator reporting very low voltage!. I replugged the UMC into a separate outlet and it rebooted and all was well again. I trust the unit survived the brownout, it is sounding and behaving as it was prior to the event.
Perhaps those units that are recycling are suffering from low voltage?
Let me tell you the UMC does not sing sweetly from within the chassis, more like a groaning..., not like a songbird. Lonnie can you re-voice my unit if I sent it back?"
The original poster had similar issues but that thread became a firmware discussion. After many unsuccessful restarts when plugged into my power conditioner I tried a separate line. My UMC has worked flawlessly when plugged into its own outlet. Hope this helps, and by the way, I am still enjoying my unit and waiting for the new FW.
Hope you work your issues out.
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ratmice
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Post by ratmice on Apr 7, 2010 13:43:12 GMT -5
Stu-
Very interesting. Mine stopped the infinite loop after about 10 minutes. It has worked fine for the last 2 days, and is still plugged in to the APC. While it was happening I did check the APC display, but didn't see any indication of voltage sag, this in response to my memory of the issue from that very thread. I'm not sure why the wall voltage would be any more stable than the APC output, however, aren't they related?
I'm keeping my fingers crossed.
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Post by stustan on Apr 7, 2010 15:46:57 GMT -5
ratmice
I couldn't even begin to understand the whys and hows of what I call the "voodoo" of this problem except to say that my UMC has been stable in this regard for the past three weeks.
My only other anomaly was a rhythmic loss of pix and sound that took me an hour to figure out, almost called Emotiva for help. The cure was a reboot of my DVR (Scientific Atlanta Explorer 8300HD). That problem never returned.
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