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Discussion in 'DIRECTV HD DVR/Receiver Discussion' started by lacibaci, Apr 12, 2013.
I guess you have better eyes then my, could you please read that model id of Broadcom main chip ?
the same one that the h25 uses i believe
edit. i googled it. i cant read it on the review and dont want to take it apart
If it 7408, the an extort below sounds ironic for C31 implementation:
Dynamic power management controllers provide efficient power management capable of managing and shutting down unused system components in real-time
Counting the high temp [+150 F], someone did sloppy job on FW, an efficiency is none.
On page 16 of the report you could see power consumption of cable, sat STB
Very early on, the "R"-series of DVRs were notorious for fan failures, resulting in a number of reported overheating-related premature failures. Given that history, I'm guessing the fan has failed in your C31.
I would suspect, no fan inside of C31 as for Joey ... not installed just for cut its cost
Just turned on and checked the C31 in the spare bedroom and it is 147F. It is also out in the open on a shelf that the TV also sits on. Temp in the house is about 67F
Or maybe this is just as simple as the hardware/software not posting an accurate temp. Has anyone checked one with an infrared/non-contact thermometer.
I did measure Joey - confirm the its temp
Perhaps we have discovered the reason for the C41s...they run MUCH cooler (under 120 degrees).
Mine don't show that big of a difference. 143 verses 134
Hmmm...mine is only 116 at the moment and I've never seen it above 118.
Perhaps it's nice to know, but how it could help these owners of overheated C41 ?
Agreed. I like the attitude. Another thing we should not have to fret about.
And there is truly a ginormous difference between losing a DVR and losing a client, in that when you lose a DVR you can lose 450 HRs of HD programming and the serial thread of 30 or 40 shows you are recording, while if you lose the client, you just have them send you a new one and you're good to go.
So while I regularly buy $9 6" fans from Walmart and point them at all DVRs (and my AVR), I might skip a C31. A DVR with content is something you have an investment in, while a client is like a rented car.
With summer coming I am not really happy about the thought of these little heaters all over my house, tho; cooler is always better, but not putting out great volumes of heat in the first place is better still.
Who has an overheated C41 or C31? Since 150 degrees is apparently normal for these, I wouldn't say any of them are overheating. More like operating as designed.
Since they have no moving parts and just a small amount of storage I wouldn't worry about them failing. If they had a hard drive in them and were getting to that temp that would be cause for concern. But since they don't and most of the inside of them is hollow there's really nothing to be concerned about.
You could say anything what you want, but without knowing Opreationg Conditions, your conclusion is wrong.
For example other chips (based on same technology) has Max operating temp is 70 C.
Now calculate the C31's temp 150 F ... got it ? = 65.5 C.
Perhaps you are not EE and never been close to design CE devices ... I wouldn't take your advice and be so technially blind.
My point, darling, is that not all Cx1 clients are reporting such high temperatures. My client has been operating for 2.5 hours right now and reports 114 degrees. Either mine is an anomaly or else they are not designed to run at 140 degrees or more. Seems to me the only way to know is to collect more data, which was why I bothered to post to this thread. If no one cares, so be it.
I don't think the enclosure is designed well for this. They put vents on the bottom and sides and none on top. If I just flip it upside down, it runs 10° cooler. Put it on a side (making sure the vents are not blocked) 15-20° F cooler...
Another crazy idea: Since there is a USB port, I'll try to place it on its side and plug a small USB fan blowing on bottom vents
Probably didn't put vents on top because it would look ugly. You'd see that enormous heatsink on that Broadcom chip.
Most complicated ICs like that one end up being rated for industrial temperature ranges anyway, which puts the upper end at 85 C. It would be interesting to figure out why the temperatures are that different between units -- it must be the way they're being used.