Topic: My BFL SC Single 60 went out in a puff of smoke - what next? (Read 5783 times)
Cool. Still want to return it, or sell it?
OP is there any BFL warranty? or had you manipulated the single in any way that voids a warranty? I have often wondered about this, seeing how shady BFL was originally with their delays.
Any news?
Any news?
I have received an RMA number from BFL
OP is there any BFL warranty? or had you manipulated the single in any way that voids a warranty? I have often wondered about this, seeing how shady BFL was originally with their delays.
Any news?
Any news?
I had troubles with my single, wrote BFL for a RMA and within 2 days received an email asking for my original invoice # and email. I wrote back telling them I bought the unit second hand and did not have that information. Within another day received a RMA. I sent the unit in and received a single back in about 1 week. It appears they just removed my cover and placed it over a brand new unit. Really overall great service.
I also have another single that acts the same way of slowing down after about 12 hours. I just stop and restart the easy miner and it goes back up to 58/59GH. I think it's either software or memory problems with my desktop.
I also have another single that acts the same way of slowing down after about 12 hours. I just stop and restart the easy miner and it goes back up to 58/59GH. I think it's either software or memory problems with my desktop.
temps are stable while it is at full speed, then temps drop with hashrate, if it was thermal I would expect dropping hash with stable temp
I think software, was hoping it was a known issue
Hm, you're right. Does the power supply get warmer? When the hashrate is dropping, what do you see per chip by doing D, then M to switch to per chip stats? I'm wondering if chips are dropping, or the clock is dropping.I think software, was hoping it was a known issue
Post and let us know.
temps are stable while it is at full speed, then temps drop with hashrate, if it was thermal I would expect dropping hash with stable temp
I think software, was hoping it was a known issue
I think software, was hoping it was a known issue
The software load on the LS is really sensitive to temps. Check to see if any of the fans are blocked or down, if you really want to I can take a look at it, drop it in the mail.
Speaking of which I bought a 23.5gh LS that I have boosted to 28gh. Can be done just need software and heat sinks in the right place.
Speaking of which I bought a 23.5gh LS that I have boosted to 28gh. Can be done just need software and heat sinks in the right place.
here is my 60 single's new trick, it will run about 12 hours at rated hash, then starts slowly dropping speed. Used to be it took me a few days to notice because it happened slowly, now I will be under 40 in 24 hours and I am rebooting it daily.
anybody heard of this one before?
anybody heard of this one before?
Memory leak?
here is my 60 single's new trick, it will run about 12 hours at rated hash, then starts slowly dropping speed. Used to be it took me a few days to notice because it happened slowly, now I will be under 40 in 24 hours and I am rebooting it daily.
anybody heard of this one before?
anybody heard of this one before?
OP is there any BFL warranty? or had you manipulated the single in any way that voids a warranty? I have often wondered about this, seeing how shady BFL was originally with their delays.
Any news?
OP is there any BFL warranty? or had you manipulated the single in any way that voids a warranty? I have often wondered about this, seeing how shady BFL was originally with their delays.
try the Nidec Servo (Scythe branded) gentle typhoon 1850s
finest fan I have ever dealt with
http://www.sidewindercomputers.com/scge120mmsic2.html
finest fan I have ever dealt with
http://www.sidewindercomputers.com/scge120mmsic2.html
Can I just butt in and ask what spec the BFL 120mm fans are inside the single, I am running one outside the case currently in a cold loft and want to get new fans on it and the case back on (originals broken in transit apparently and I don't have them)
tried some noctua 1.44W 0.14A things the guy gave me when selling and they're hopelessly underpowered.
TIA, and good luck OP.
tried some noctua 1.44W 0.14A things the guy gave me when selling and they're hopelessly underpowered.
TIA, and good luck OP.
Incredible thread, thank you lightfoot for your insight and a question if I may.
Little singles out in the open with a big fan blowing at them should be fine, right?
my temps are also reporting around 70 degrees (which happens to be the ideal temp for my jupiter, so I thought those temps were ok.
ambient is 90 f poor AC is going full bore just to keep the room at that temp.
The thing is, when I finally got these little singles, I took one look and stripped the cases and threw them and the power supplies away. they didn't even include a fan for the heat sink! one fan only and that is the intake fan, which is terribly constricted by that ridiculous face plate and I thought "I can do better"
So I stripped them down, set the intake fan on top of the heat sink blowing down, and that blower fan blowing across them.
And a question for the OP please. How long was it running before it blew?
Little singles out in the open with a big fan blowing at them should be fine, right?
my temps are also reporting around 70 degrees (which happens to be the ideal temp for my jupiter, so I thought those temps were ok.
ambient is 90 f poor AC is going full bore just to keep the room at that temp.
The thing is, when I finally got these little singles, I took one look and stripped the cases and threw them and the power supplies away. they didn't even include a fan for the heat sink! one fan only and that is the intake fan, which is terribly constricted by that ridiculous face plate and I thought "I can do better"
So I stripped them down, set the intake fan on top of the heat sink blowing down, and that blower fan blowing across them.
And a question for the OP please. How long was it running before it blew?
It had been running for more than a month
Incredible thread, thank you lightfoot for your insight and a question if I may.
Little singles out in the open with a big fan blowing at them should be fine, right?
That could work. I haven't played with the LS yet, but I would say the key is to get a fan on top of the heat sink and one blowing from the side over those FET heatsinks. Running even a little vornado on mine is keeping things cool.Little singles out in the open with a big fan blowing at them should be fine, right?
Quote
The thing is, when I finally got these little singles, I took one look and stripped the cases and threw them and the power supplies away. they didn't even include a fan for the heat sink! one fan only and that is the intake fan, which is terribly constricted by that ridiculous face plate and I thought "I can do better"
There's only one fan? Blah, I thought there would be two. Ok.C
Incredible thread, thank you lightfoot for your insight and a question if I may.
Little singles out in the open with a big fan blowing at them should be fine, right?
my temps are also reporting around 70 degrees (which happens to be the ideal temp for my jupiter, so I thought those temps were ok.
ambient is 90 f poor AC is going full bore just to keep the room at that temp.
The thing is, when I finally got these little singles, I took one look and stripped the cases and threw them and the power supplies away. they didn't even include a fan for the heat sink! one fan only and that is the intake fan, which is terribly constricted by that ridiculous face plate and I thought "I can do better"
So I stripped them down, set the intake fan on top of the heat sink blowing down, and that blower fan blowing across them.
And a question for the OP please. How long was it running before it blew?
Little singles out in the open with a big fan blowing at them should be fine, right?
my temps are also reporting around 70 degrees (which happens to be the ideal temp for my jupiter, so I thought those temps were ok.
ambient is 90 f poor AC is going full bore just to keep the room at that temp.
The thing is, when I finally got these little singles, I took one look and stripped the cases and threw them and the power supplies away. they didn't even include a fan for the heat sink! one fan only and that is the intake fan, which is terribly constricted by that ridiculous face plate and I thought "I can do better"
So I stripped them down, set the intake fan on top of the heat sink blowing down, and that blower fan blowing across them.
And a question for the OP please. How long was it running before it blew?
yes, I have an IR therm, but I just had downtime the other day when I cut the output plate and blew the dust out...It will be a while before I want to shut it off again.
The case was off when it blew up, the fans above the ASIC clusters were blowing down through the heatsink, the end fans were both blowing inwards - i didn't consider the heatsinks underneath at the time (note, they are just stuck on to the base of the PCB with double sided tape, so fairly poor heat transfer to them anyhow), although when the case was on originally, it was hashing below 60GH and temperature in cgminer was 70/71 °C so I considered it better to run 10° lower temps in cgminer. The failure appeared to be on the upper suface though and there did not appear to be thermal damage on the underside.
As an update bfl did finally return my email with an RMA number but it was too late (and as mentioned before would take too long and was cost prohibitive)
Thanks for reporting on this. Real data always helps, I have put three little heat sinks on the bottom of my three hot FETs as well as the top, and both are wicking away a pretty fair amount of heat. As an update bfl did finally return my email with an RMA number but it was too late (and as mentioned before would take too long and was cost prohibitive)
The temp sensor for the board is in the center of the square of 8 hash engines, it does a very good job of watching the temp of those chips but does not do a good job of monitoring outliers like the FETs. Although come to think of it, the little SC box that the jally uses pulls the air from the front, right over the FETs, up through the heat sink, and out the top. Maybe that is why they did that; and putting the fan upside down will cool that center board sensor (which is really not the problem) but will not flow air over (and in the case of the SC60) or under the FETs.
Does anyone with an SC60 have access to a IR temp tool? I am wondering about the temp of those sinks, with the fans going down.
Looking forward to hearing about the repairs.
The case was off when it blew up, the fans above the ASIC clusters were blowing down through the heatsink, the end fans were both blowing inwards - i didn't consider the heatsinks underneath at the time (note, they are just stuck on to the base of the PCB with double sided tape, so fairly poor heat transfer to them anyhow), although when the case was on originally, it was hashing below 60GH and temperature in cgminer was 70/71 °C so I considered it better to run 10° lower temps in cgminer. The failure appeared to be on the upper suface though and there did not appear to be thermal damage on the underside.
As an update bfl did finally return my email with an RMA number but it was too late (and as mentioned before would take too long and was cost prohibitive)
As an update bfl did finally return my email with an RMA number but it was too late (and as mentioned before would take too long and was cost prohibitive)
yeah, I think we found the problem
Someone needs to send me a blown one of these, I'll post a whole thread on how *not* to nuke your Single. Or something.
Jump to: