Hi, I'm new to the KNC Titan world so mind the rookie question.
My cube : 1 Die at 100Mhz and the others are at 250Mhz and above.
No matter what I try (MHZ/voltage) I can't get it higher then 100Mhz, it always dies.
I tried cooling it down with really cold air but nada.
What's the real reason it doesn't function like the others? is the DCDC not functioning ? are those replaceable ?
Thanks in advance.
Keep trying different settings etc as you go down the line....if it is first batch units (used) they we're crap on bad dies. My first batch from nov 2014 i have had 2 dies shut to OFF have the miner more stable. There is a thread on www.bitcointalk.org
the thread you want for glen's stuff and other mods is belowhttps://bitcointalk.org/index.php?topic=170332.0
but hell sometimes they just don't work.
you can 're-paste' a cube with thermal and new fan and add heatsinks etc (i'm not brave enough yet)
from these videos...the 1st is good video you can see more but in swedish ..his 2nd video is not as clear but in english
anyway an extreme fix option https://www.youtube.com/watch?v=O-RBI4am-wY
(swedish but the video on the re-paste etc is more clear)https://www.youtube.com/watch?v=-G_zcJ0vbOw
be sure to look at his info/comments below on such to see what he got for thermal paste/fans/heat sinks etc
anyway me I have 2 dies on one cube now slowly fading (at 250 on adv page for the 2 dies on the cube ..the 2 others are at 325 setting)
they 'obviously' are fading with heat...I can get them to work but the heat cranks up over like 93c when I try to run them that fast...so
obviously imho it is heat issue ..which means me getting brave and re-pasting that cube and do the stuff in the above videos
but always remember these machines were made for use at 250mh they only overclocked them to 300 mh when they saw they we're gonna be 4 months late
also the orig firmware was max at 300mh ...but their first run batch dies sucked so bad that they tweaked the firmware yet again to get 350mh out of them
so they are maxed out to the max on voltage equip etc (thus the split psu adapters on the cubes etc)
SO completely irresponsible imho...they are now at the 325 setting maxed out to the wall!
So with that in mind getting 325mh out of your rig is probably better then average...so consider anything over 300mh a gift
also the units (my nov units) are now 13 plus months old...orig 90 day warranty design (they had to make it a year because when we bought them for 1 month
they forgot to change the www page so they were stuck)..so always remember they are an 8th grade science fair project in design at best
anyway......be happy that your titan still mines ......anyway the tricks that come to me off hand
also as a newbie I never upgrade the SD in the unit ....take it out....if orig SD kingston class 4 SD REPLACE IT ASAP with a class 10 at least! I use Sandisk 8gb class 10's
what I mean for the above is I always image an SD as a spare with the knc 2.00 firmware..then using that new SD with that on it ..upgrade and get glen's firmware
on this thread based on the knc 2.00 image and upgrade it that way
I always have the orig SD set aside as a catastrophic backup (assuming it works) whenever I upgrade..if it don't take for some reason (have had 1 bad SD) then all
I have to do is pop the orig SD back in and make a new SD for any re-attempt in the future
anyway hope this helps...if it all sucks myself or others on here would proably take the more broke cubes off your hands on an attempt to fix at the right price ...but i doubt they will drive you that crazy if they hash
thus is the lot of a titan owner (used or otherwise)