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Post by GTPlus on Mar 24, 2017 10:43:36 GMT -5
I received my MC-700 last week and got around to setting it up on Tuesday. I seem have the latest firmware (2.8.7), which I can confirm does resolve at least the rename bug. However, I'm encountering a few issues and am wondering if others have had similar problems. 1) There is a terrible popping/screeching noise when the input encoding changes (PCM-> Dolby Digital, etc.) This seems to happen with any connected device -- Roku, PC, Xbox, etc. 2) When playing content with my Roku, sometimes the audio does not play. The OSD may show that there is no audio, but other times it correctly displays Dolby Digital but is silent. Switching to another input and back resolves the issue. 3) The Roku input sometimes just goes black. I'm fairly certain that the device is not going to sleep, as I can hear the navigation sounds when using the remote. I typically have to changes inputs or cycle the entire system to get video back. 4) My PC (2011 vintage) is quite glitchy when connected to inputs 4-6. It works fine when connected to inputs 1-3. I saw a similar post about this further back in the forum, so I believe this may be a wide spread issue. I've resolved the issue for now by using the 3rd HDMI input, but of course that means there's no OSD when using my PC. Also, given the PC doesn't support HDMI 2 this all seems a bit counterintuitive. I contacted support about these issues and their only response was that there was a known thermal issue and that I could either send back my device or request a heatsink be sent to me. However, many of these issues seem software based, not thermal based, especially as they happen at any time, not just after prolonged use. 1- Yes, sometimes I get this, most often with my PS4Pro. 2- Roku audio on the menu is slow, but I have not had to change inputs to get it to come up. It starts after I select an app 3- Not had this on mine. But where do you have it powered? If you are using the USB on the back of the MC-700, I would recommend using the wall plug or another source. |
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mhoran
Seeker Of Truth
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Post by mhoran on Mar 24, 2017 11:02:00 GMT -5
1- Yes, sometimes I get this, most often with my PS4Pro. 2- Roku audio on the menu is slow, but I have not had to change inputs to get it to come up. It starts after I select an app 3- Not had this on mine. But where do you have it powered? If you are using the USB on the back of the MC-700, I would recommend using the wall plug or another source. 2) Interesting, what firmware version do you have? I wonder if a regression was introduced in 2.8.7. 3) Roku is powered by the wall plug. |
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Post by GTPlus on Mar 24, 2017 11:24:59 GMT -5
1- Yes, sometimes I get this, most often with my PS4Pro. 2- Roku audio on the menu is slow, but I have not had to change inputs to get it to come up. It starts after I select an app 3- Not had this on mine. But where do you have it powered? If you are using the USB on the back of the MC-700, I would recommend using the wall plug or another source. 2) Interesting, what firmware version do you have? I wonder if a regression was introduced in 2.8.7. 3) Roku is powered by the wall plug. I have 2.8.1. FWIW you should be able to determine if the Roku is being powered down or not, since it will have the boot screen come up. I know in the past I had my Roku power down when it did not get enough power from the USB on my UMC-1. If yours is in the wall plug that should not be the issue. |
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Post by rbk123 on Mar 24, 2017 11:35:46 GMT -5
1) There is a terrible popping/screeching noise when the input encoding changes (PCM-> Dolby Digital, etc.) This seems to happen with any connected device -- Roku, PC, Xbox, etc. 2) When playing content with my Roku, sometimes the audio does not play. The OSD may show that there is no audio, but other times it correctly displays Dolby Digital but is silent. Switching to another input and back resolves the issue. 3) The Roku input sometimes just goes black. I'm fairly certain that the device is not going to sleep, as I can hear the navigation sounds when using the remote. I typically have to changes inputs or cycle the entire system to get video back. 4) My PC (2011 vintage) is quite glitchy when connected to inputs 4-6. It works fine when connected to inputs 1-3. I saw a similar post about this further back in the forum, so I believe this may be a wide spread issue. I've resolved the issue for now by using the 3rd HDMI input, but of course that means there's no OSD when using my PC. Also, given the PC doesn't support HDMI 2 this all seems a bit counterintuitive. 1) Have not experienced this. 2) & 3) - experienced this semi-frequently with my HTPC and my satellite box. Audio would be dropped or sometimes video; this is the HDMI getting confused. Even though these 2 (for me) are only 1080p, the problem was solved when I switched to 4k certified cables. I still lose the occasional audio (worked around by rebooting the MC or switching to another source and back, etc..), but now it's fairly rare. 4) I use my PC on inputs 4-6 with no troubles now that I swapped for 4k cables. I turned off the OSD, though, as it's info wasn't useful; the info on the display is what I want to see and that's not in the OSD. |
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Post by hilodb1 on Mar 24, 2017 12:21:08 GMT -5
If I am looking at this correctly that "warm" spot in the second pic is the HDMI board. Yes I believe this is the HDMI board. I will be doing another test this weekend with the cover off and get a few pics of the temps of the individual components. I did get another reading of the unit in that spot about an hour later and the temp had risen to 110*F. This is about the time I had my unit "lock up" on me when I tried to change the surround mode. Edit: I have also noticed the odd pop/screech when input encoding changes. It doesnt seem to happen all the time but it was more pronounced the warmer the unit got. |
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l3
Seeker Of Truth
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Post by l3 on Mar 26, 2017 10:43:49 GMT -5
After hearing about the thermal issues, I thought I'd try a simple test. My unit is in an open rack, and the room temperature is a constant 69. I took off the cover yesterday, and have had no audio dropouts, white noise, or lockups since. This is the first time since purchasing that I can enjoy it. Obviously, not a permanent fix.  I'll be calling customer service tomorrow. |
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Post by BroncoAZ on Mar 26, 2017 12:00:01 GMT -5
After hearing about the thermal issues, I thought I'd try a simple test. My unit is in an open rack, and the room temperature is a constant 69. I took off the cover yesterday, and have had no audio dropouts, white noise, or lockups since. This is the first time since purchasing that I can enjoy it. Obviously, not a permanent fix. I'll be calling customer service tomorrow. I still wonder if the heat sink is enough or if the top really needs vent holes. |
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Post by socketman on Mar 26, 2017 17:29:51 GMT -5
call around to sheetmetal shops and find someone who does louvers. Take the top off and have some punched in.
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Post by BroncoAZ on Mar 26, 2017 19:32:32 GMT -5
call around to sheetmetal shops and find someone who does louvers. Take the top off and have some punched in. It isn't that I couldn't find a place to punch some holes, one of my clients manufactures cases for computer equipment and had an automated hydraulic punch for just such processes. Something tells me that adding holes would void my warranty. If holes are to be added I would only have them done by Emotiva. |
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Post by socketman on Mar 26, 2017 20:39:07 GMT -5
They are sending out heatsinks for the dsp which requires opening the unit, punching holes likely would not void the warranty and would probably alleviate the need for warranty in the first place. But to each his own, it wouldnt stop me since i know what heat does to pretty much anything, electronics engines transmissions etc etc.
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Post by hilodb1 on Mar 26, 2017 21:02:21 GMT -5
Thermal image of the cirrus chips. This was while I was running the unit with the cover off. I did not experience my unit "locking up" or any of the pops/screech sounds during this time. Unit was running for around an hour or so in my entertainment center.   |
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Post by BroncoAZ on Mar 26, 2017 21:21:12 GMT -5
They are sending out heatsinks for the dsp which requires opening the unit, punching holes likely would not void the warranty and would probably alleviate the need for warranty in the first place. But to each his own, it wouldnt stop me since i know what heat does to pretty much anything, electronics engines transmissions etc etc. Maybe Emotiva can get to the point where they are sending ventilated replacement covers along with the stick on heatsinks. |
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Post by hilodb1 on Apr 1, 2017 16:28:55 GMT -5
Reporting back after a week of having installed the stick on heat sink. I have not changed anything besides adding the heatsink to my setup. With my MC 700 cover back on and installed back in my entertainment center I have not had any issues with sound dropping out or system lock ups. Even the pop/screech when input encoding changed has gone away.
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mhoran
Seeker Of Truth
Posts: 8
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Post by mhoran on Apr 1, 2017 20:00:06 GMT -5
Reporting back after a week of having installed the stick on heat sink. I have not changed anything besides adding the heatsink to my setup. With my MC 700 cover back on and installed back in my entertainment center I have not had any issues with sound dropping out or system lock ups. Even the pop/screech when input encoding changed has gone away. Sadly, I'm still having the popping and screeching problems with the heat sink installed. However, moving my Roku to one of the HDMI 2 inputs seems to have resolved the no audio/no video issues I was having with the Roku on input 5. I'd still like to know why my PC and Roku misbehave on the HDMI 1.4 inputs, especially given they are HDMI 1.4 devices. |
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Post by sydhaynes on Apr 1, 2017 22:05:31 GMT -5
Reporting back after a week of having installed the stick on heat sink. I have not changed anything besides adding the heatsink to my setup. With my MC 700 cover back on and installed back in my entertainment center I have not had any issues with sound dropping out or system lock ups. Even the pop/screech when input encoding changed has gone away. Sadly, I'm still having the popping and screeching problems with the heat sink installed. However, moving my Roku to one of the HDMI 2 inputs seems to have resolved the no audio/no video issues I was having with the Roku on input 5. I'd still like to know why my PC and Roku misbehave on the HDMI 1.4 inputs, especially given they are HDMI 1.4 devices. Are you using "premium certified" HDMI cables? I had 1.4 HDMI issues as well but they cleared up after changing cables. The MC-700 seems to be very finicky that way. |
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mhoran
Seeker Of Truth
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Post by mhoran on Apr 14, 2017 6:53:01 GMT -5
I just ordered some "premium certified" HDMI cables. We'll see how that goes. I find it hard to believe that HDMI 1.4 devices would require premium certified cables, and the noise issue seems to be more processor related than cable related, but one can hope.
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I'll be calling customer service tomorrow.
