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Title: Unresponsive Icarus? Post by: Luke-Jr on May 22, 2013, 07:19:41 AM It seems my Icarus has developed a problem while I was at the conference.
The Prolific USB chip responds as usual, and behaves normally; however, sending jobs (including known "test" jobs) never returns any nonces, regardless of how long I wait. The original cooling (heatsink & fan) is intact and working flawlessly, and I have never connected the JTAG or modified the FPGA or flash contents. Wondering if anyone else has seen this kind of behaviour, before I start poking around more... Title: Re: Unresponsive Icarus? Post by: HellDiverUK on May 22, 2013, 10:04:44 AM Maybe it got too hot and it's wings melted?
Title: Re: Unresponsive Icarus? Post by: wizkid057 on July 17, 2013, 11:02:16 PM Digging up this old thread, I'm taking a first look at Luke-Jr's Icarus board. (Literally have had it < 15 minutes).
Preliminary checks show a pretty significant voltage drop (well below what the LX150 FPGAs want) on the power output to the chips. First thoughts are just one of the small power components have failed, possibly due to heat or surge or a faulty power supply. Going to test some of these and go from there. Definitely using a sufficient power source for testing, so, that's not the issue. More when I figure it out. :) |