Are GridSeeds really this fragile, I purchase 10 and 6 are defective do to a PSU short ? ( is this possible)
Hello Gridseed users.
I purchase a 10 unit GridSeed package that came with a Raspberry PI and 10 port USB hub and two 10A 120 to 12 VDC PSU'.
I connected all the 10 GridSeeds to a the USB hub and powered it up, then I connected a 1 group of 5 gridseed to a 10A 12 PSU (XHY PV-12012000) using a fan out 1 to 5 power cable supplied with the kit. The other 5 GridSeeds were connected in the same way. I powered up one group of 5, and when I plugged the second PSU I huge spark was seen on the 12 VD DC line of the 1 to 5 fanout cable all the fans started and then stopped.
I unpluged the PSU and tried it on only one GridSeed and the PSU was dead. It's green LED was no logner on and my voltmeter showed no 12 volt reading. I then tested each of the 5 Gridseeds and not one would power on, Could they all have died, I though impossible but I got out a better quality 120 to 12V transformer made for CB radio and the 5 devices no longer powered on, and when directly conntected to a USB port no led. The continuity tester on my volt meter shows a short on all of them !.
So I powered-up the other 5 Gridseeds left the room for a few minitues, when I returned all of the units has stopped and the fans where vibrating a making a whining noise. I noticed that the PSU's green LED was flickering. So the second PSU was no longer able to power the load of 5 Gridseeds not even mining. I later discovered that the second PSU was only have to operate a Gridseed for a few minutes before apparently dieing out.
I purchase this kit from Zoomhash.com, and I opened a support ticket. I've played with electrical gadgets for a while and have seen my fare share of cheap made in china power supplies die. But never have I seen damage on this scale occur so fast; Out of my 10 GridSeeds only 4 work after this "incident", 5 don't even power-on and the 6th powers on but the USB circuit appears dead and the internal LED never come on.
I am really regretting that I did not take the time to test each unit one at a time on my PC to determine that each was working properly as I was so excited to and wanted to get the devices working fast.
I'm still at a lose as to what might have cause this chain of events ? Could a short in one of Gridseed has caused a leak of the 12V dc in the USB circuit and back in the USB Hub and back in the other GridSeed's ? The USB hub also is dead.
Picture of PSU that I suspect was the cause of all this destruction.
http://i.imgur.com/FzTRVaH.jpg
Hello Gridseed users.
I purchase a 10 unit GridSeed package that came with a Raspberry PI and 10 port USB hub and two 10A 120 to 12 VDC PSU'.
I connected all the 10 GridSeeds to a the USB hub and powered it up, then I connected a 1 group of 5 gridseed to a 10A 12 PSU (XHY PV-12012000) using a fan out 1 to 5 power cable supplied with the kit. The other 5 GridSeeds were connected in the same way. I powered up one group of 5, and when I plugged the second PSU I huge spark was seen on the 12 VD DC line of the 1 to 5 fanout cable all the fans started and then stopped.
I unpluged the PSU and tried it on only one GridSeed and the PSU was dead. It's green LED was no logner on and my voltmeter showed no 12 volt reading. I then tested each of the 5 Gridseeds and not one would power on, Could they all have died, I though impossible but I got out a better quality 120 to 12V transformer made for CB radio and the 5 devices no longer powered on, and when directly conntected to a USB port no led. The continuity tester on my volt meter shows a short on all of them !.
So I powered-up the other 5 Gridseeds left the room for a few minitues, when I returned all of the units has stopped and the fans where vibrating a making a whining noise. I noticed that the PSU's green LED was flickering. So the second PSU was no longer able to power the load of 5 Gridseeds not even mining. I later discovered that the second PSU was only have to operate a Gridseed for a few minutes before apparently dieing out.
I purchase this kit from Zoomhash.com, and I opened a support ticket. I've played with electrical gadgets for a while and have seen my fare share of cheap made in china power supplies die. But never have I seen damage on this scale occur so fast; Out of my 10 GridSeeds only 4 work after this "incident", 5 don't even power-on and the 6th powers on but the USB circuit appears dead and the internal LED never come on.
I am really regretting that I did not take the time to test each unit one at a time on my PC to determine that each was working properly as I was so excited to and wanted to get the devices working fast.
I'm still at a lose as to what might have cause this chain of events ? Could a short in one of Gridseed has caused a leak of the 12V dc in the USB circuit and back in the USB Hub and back in the other GridSeed's ? The USB hub also is dead.
Picture of PSU that I suspect was the cause of all this destruction.
http://i.imgur.com/FzTRVaH.jpg
