one is hashing at 5.600 mh/s sometimes up to 6.000 mh/s (so not realy good)
but the other one hashes stable at 7.700 and sometimes 8.000 mh/s without any modefications.
i think that one got very good chips!
i have 2 asic chips from a death jalapeno, now iam playing with my mind to solder it into the bad one.
question is:
i expect the new jalapenos have the new chips but the death jalapeno may have old chips.
can i mix them?
did someone did this already?
i soldering bga's since 8 years in my shop, so no problem to reball them.
the jalapeno have a death motherboard.
i got it with hot ftdi chip.
the ftdi chip was getting so mutch hot that it burned itself into the pcb, after removing the ftdi chip it
lift of the first layer of the pcb.
i tryed to recover the lost tracks with the shematics, but after powering on, in some layers i seen it again
burned the tracks and shorted.
i changed the atmega, ftdi chip, dc dc converter, coil, checked the fets, but it no way...
the pcb is too mutch demaged for repair.