Topic: Caution! Pandaminers catching fire! - page 3. (Read 4673 times)
Yeah everyone knows that split cables are a bad idea.. in surprised panda allows his
Hi @philipma1957 ,
They are using seven 6 pin connectors to power 8 GPUs + aux power. This is bound to end in this type of failure eventually. Technically there should be 16 6 pin connectors to play it safe. They used the bare minimum. (don't forget a normal 400/500 GPU is pulling half its power from the PCIE slot/riser and another half from the 6 pin).
no they are using 5 and splitting 2 into 4
so
1 single 18 gauge
1single 18 gauge
1 single 18 gauge
then a single 18 gauge that splits into 2 single 18gauge
then a single 18 gauge that splits into 2 single 18gauge
and every photo of every burnt setup shows the melt starts by the split cables.
I mention that this psu should not be used long term more then one time in my review and that I went to a rosewill tokamak 1500 watt with no issues
so what is your guess ?
Did the PSU (with new cabels) or the "Panda" (with new connectors) survive ?
... I´m still missing a statement from the manufactorer ^^ .
P.S. I do not see anything implying "where it starts" ...
Nothing to do with PSU it self nothing to do with how much current system draws. You can produce flame with AA battery as well.
Looks like just faulty soldering or faulty connectors. Loss of proper connection causes open circuit > resistance closing to infinity thus current without other path will try to flow trough and heat up at point where resistance is high causing connections to catch fire. Might as well be just your own fault if you did not connect wires properly but I would go with cheap connectors used that doesn't fit together too well.
Looks like just faulty soldering or faulty connectors. Loss of proper connection causes open circuit > resistance closing to infinity thus current without other path will try to flow trough and heat up at point where resistance is high causing connections to catch fire. Might as well be just your own fault if you did not connect wires properly but I would go with cheap connectors used that doesn't fit together too well.
They are using seven 6 pin connectors to power 8 GPUs + aux power. This is bound to end in this type of failure eventually. Technically there should be 16 6 pin connectors to play it safe. They used the bare minimum. (don't forget a normal 400/500 GPU is pulling half its power from the PCIE slot/riser and another half from the 6 pin).
no they are using 5 and splitting 2 into 4
so
1 single 18 gauge
1single 18 gauge
1 single 18 gauge
then a single 18 gauge that splits into 2 single 18gauge
then a single 18 gauge that splits into 2 single 18gauge
and every photo of every burnt setup shows the melt starts by the split cables.
I mention that this psu should not be used long term more then one time in my review and that I went to a rosewill tokamak 1500 watt with no issues
so what is your guess ?
Did the PSU (with new cabels) or the "Panda" (with new connectors) survive ?
... I´m still missing a statement from the manufactorer ^^ .
P.S. I do not see anything implying "where it starts" ...
Nothing to do with PSU it self nothing to do with how much current system draws. You can produce flame with AA battery as well.
Looks like just faulty soldering or faulty connectors. Loss of proper connection causes open circuit > resistance closing to infinity thus current without other path will try to flow trough and heat up at point where resistance is high causing connections to catch fire. Might as well be just your own fault if you did not connect wires properly but I would go with cheap connectors used that doesn't fit together too well.
Looks like just faulty soldering or faulty connectors. Loss of proper connection causes open circuit > resistance closing to infinity thus current without other path will try to flow trough and heat up at point where resistance is high causing connections to catch fire. Might as well be just your own fault if you did not connect wires properly but I would go with cheap connectors used that doesn't fit together too well.
They are using seven 6 pin connectors to power 8 GPUs + aux power. This is bound to end in this type of failure eventually. Technically there should be 16 6 pin connectors to play it safe. They used the bare minimum. (don't forget a normal 400/500 GPU is pulling half its power from the PCIE slot/riser and another half from the 6 pin).
no they are using 5 and splitting 2 into 4
so
1 single 18 gauge
1single 18 gauge
1 single 18 gauge
then a single 18 gauge that splits into 2 single 18gauge
then a single 18 gauge that splits into 2 single 18gauge
and every photo of every burnt setup shows the melt starts by the split cables.
I mention that this psu should not be used long term more then one time in my review and that I went to a rosewill tokamak 1500 watt with no issues
Can someone confirm that those 7 6-pin connectors are the only power inputs?
7 x 75w = only 525 watts?
They must be using a thicker wire to increase the capacity of the 6 pin connectors. But the 8-pin connectors have the additional ground for a good reason...
7 x 75w = only 525 watts?
They must be using a thicker wire to increase the capacity of the 6 pin connectors. But the 8-pin connectors have the additional ground for a good reason...
The 6-pin and 8-pin both only have 3x +12V lines. Since a 8-pin PCIe is rated for 150Watts so should the 6-pin PCIe also.
So its more like 7 x 150w = 1050 Watts
But it needs to have proper grounding from the PCIe slot somehow.
Not surprised this happened. They basically rushed to production to meet demand. This was bound to happen.
Can someone confirm that those 7 6-pin connectors are the only power inputs?
7 x 75w = only 525 watts?
They must be using a thicker wire to increase the capacity of the 6 pin connectors. But the 8-pin connectors have the additional ground for a good reason...
7 x 75w = only 525 watts?
They must be using a thicker wire to increase the capacity of the 6 pin connectors. But the 8-pin connectors have the additional ground for a good reason...
Yeah I'd like to know more about the PSU's being used here, it could just as easily be the PSU and not the Panda's themselves.
... any statement from pandaminer
Its not the connectors. Where it melted was the GND not the +12V lines. They got some bad grounding problem or the PSU is just faulty in someway.
This is just bad engineering...
This is just bad engineering...
Yeah I'd like to know more about the PSU's being used here, it could just as easily be the PSU and not the Panda's themselves.
Its not the connectors. Where it melted was the GND not the +12V lines. They got some bad grounding problem or the PSU is just faulty in someway.
This is just bad engineering...
This is just bad engineering...
how do you have your pandas setup? What was their avg temp etc? sorry this happened to you
Have you contacted pandaminer support? any input from them and are they replacing your unit?
Have you contacted pandaminer support? any input from them and are they replacing your unit?
Nothing to do with PSU it self nothing to do with how much current system draws. You can produce flame with AA battery as well.
Looks like just faulty soldering or faulty connectors. Loss of proper connection causes open circuit > resistance closing to infinity thus current without other path will try to flow trough and heat up at point where resistance is high causing connections to catch fire. Might as well be just your own fault if you did not connect wires properly but I would go with cheap connectors used that doesn't fit together too well.
Looks like just faulty soldering or faulty connectors. Loss of proper connection causes open circuit > resistance closing to infinity thus current without other path will try to flow trough and heat up at point where resistance is high causing connections to catch fire. Might as well be just your own fault if you did not connect wires properly but I would go with cheap connectors used that doesn't fit together too well.
They are using seven 6 pin connectors to power 8 GPUs + aux power. This is bound to end in this type of failure eventually. Technically there should be 16 6 pin connectors to play it safe. They used the bare minimum. (don't forget a normal 400/500 GPU is pulling half its power from the PCIE slot/riser and another half from the 6 pin).
Damn this is dangerous. I last week I too was lucky to be around when one of my old 280x sparked and almost caught fire from the connector, i switched off the main power quickly...whats surprising is that the connector is all good, but a capacitor on the card got burned!
what scares me is, what if i was not around... !!
what scares me is, what if i was not around... !!
I might pickup a device which could warn me when the 6 pin connectors get over a given set point temperature. Maybe an item like this https://www.amazon.com/Crosse-Alerts-926-25101-GP-Wireless-Monitor/dp/B0081UR76G/ref=sr_1_9?ie=UTF8&qid=1496427346&sr=8-9&keywords=lacrosse+wireless+thermometer You could attach the probe to the connector and this device lets you get warnings on your phone when it exceeds the temperature you set. I use this to monitor the miner room temperature in a detached garage and the outside air temperature. This helps me to quickly to see the delta of inflow air temp. to exhaust, in order to make sure I have enough air exchanges in the room for maximum cooling and also to alert me if my large ceiling fan dies. Its a paid service after 3 months I think. I am sure there are other solutions to protect your investment short of reducing the hash and overall power usage.
Trying to pull over 100w through a 6-pin is going to melt it eventually, I would not be surprised if many of them started to reach their limits around the same time. But the B1s have been out for awhile, so I'd expect to see a lot more complaints about this. I do recall seeing this happen to at least one other person maybe a month or more ago, not sure if it was a b1 or b3 though...
I feel like all of those ports should be 8-pin, no?
If each of those ports are suppose to power a single card I'd expect to see melting connections...
edit: it looks like you have the B1s? Does that mean each of those power connections is suppose to power a 480? If so, then Pandaminer just built a time bomb
If each of those ports are suppose to power a single card I'd expect to see melting connections...
edit: it looks like you have the B1s? Does that mean each of those power connections is suppose to power a 480? If so, then Pandaminer just built a time bomb
Yes, they are B1's with the 480 gpu's...
edit: What's weird is that several connections start melting at the same time...
I feel like all of those ports should be 8-pin, no?
If each of those ports are suppose to power a single card I'd expect to see melting connections...
edit: it looks like you have the B1s? Does that mean each of those power connections is suppose to power a 480? If so, then Pandaminer just built a time bomb
If each of those ports are suppose to power a single card I'd expect to see melting connections...
edit: it looks like you have the B1s? Does that mean each of those power connections is suppose to power a 480? If so, then Pandaminer just built a time bomb
Reminds me of KNC Neptune.
They caught fire also : https://www.cryptocoinsnews.com/knc-neptunes-burning-whats-smell-ooops-melted/
They caught fire also : https://www.cryptocoinsnews.com/knc-neptunes-burning-whats-smell-ooops-melted/
Then its just cheap connectors. Try to take them to some PC repair and ask them to re-solder you new connectors.
Already ahead of that... Gonna do it myself as soon as I find a web shop selling these types of connectors
Then its just cheap connectors. Try to take them to some PC repair and ask them to re-solder you new connectors.
Nothing to do with PSU it self nothing to do with how much current system draws. You can produce flame with AA battery as well.
Looks like just faulty soldering or faulty connectors. Loss of proper connection causes open circuit > resistance closing to infinity thus current without other path will try to flow trough and heat up at point where resistance is high causing connections to catch fire. Might as well be just your own fault if you did not connect wires properly but I would go with cheap connectors used that doesn't fit together too well.
Looks like just faulty soldering or faulty connectors. Loss of proper connection causes open circuit > resistance closing to infinity thus current without other path will try to flow trough and heat up at point where resistance is high causing connections to catch fire. Might as well be just your own fault if you did not connect wires properly but I would go with cheap connectors used that doesn't fit together too well.
It could be the connectors being used. I don't see any indications on the motherboard nor the PSU of any overcurrent... Connectors are all connected properly, I do pay good attention when I connect my wires.
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