Mine are all powered down since the price went below $300. Looking for $400 before I power up again.

Here's what I know about the D45 light:

Obviously if it is on and red that's bad!

I had a red D45 on one board that was fixed by simply re-applying the thermal paste - this can be verified by downloading the diagnostic file and following the logic - i.e. everything boots, then slowly overheats and shuts down - as opposed to not starting at all.  So, that was my first instance with the red D45

Furthermore, I know if a pump is not working or not connected it will go straight to the red D45 without even trying to start beyond the first flicker of all the lights D37-D44.

What I did (I'm not smart with programming) is download NotePad++ and used it to search and highlight words like "overtemp", "fail", and "error" in the diagnostic file to see where things are going wrong.  Although there is a lot I do not understand - I simply compared it to one of my normal machines.

By the way, SW1 (push button) on the back of the board is apparently the reset switch - used it to diagnose things while it was running - simply restarts the respective board.

My assumption is: D37-D44 are lights representing each of the 8 cores and by sequencing yellow it means everything is normal.  If it is skipped in the sequence it must be bad or not responding.  D45 is some sort of error indicator whereas OFF is normal and Red is bad but does not necessarily always mean the same thing?

Would be nice if between all of us here we could put together a guide of known issues/fixes and a decoding key for the diagnostic report in a public document that doesn't require reading this entire thread - anyone know how to do this?

More to follow as I troubleshoot...

...am I  the only one with this issue?

really?

infernoman -

You'll probably need to be more specific - although I'm no expert.

On your status page:
are your core temps < 100 on average ?
are all the pumps running roughly 3000 rpm?
are all the fans running 3500-4500 rpm?

looking through the front grill do you see the 'knight rider" lights - sequenced yellow lights?
are any red?

if its not under warranty - pop the top - which light is red?

any sign of leaks in the cooling system?

any lights looking through the side power supply screens - should be none

next onto the advanced page then the diagnostic report.....

My wallet functions normally with the exception of reading QR codes.  As soon as the camera sees a code it appears to read it but does not populate the address field.  Tried un-installing and re-installing but get the same result.  Also, checked iOS settings for anything prohibiting its use of the camera but did not see anything.

Any ideas?  Anyone else have this issue?

So, I tore apart one of my pumps today since it apparently wasn't working and here is what I saw:





I have the dreaded D45 red light and I cannot seem to solve the issue.  I know its not the the thermal paste - successfully changed that on other TMs with no issue.  I used a mechanics stethoscope to listen to the pump and it seems normal, shows a normal RPM on the STATS page but for whatever reason (according to the diags) the cores overheat and immediately shuts down one board.  Tried swapping the connectors, pulling the J11 and a few other things but no luck.  

For what its worth, I haven't taken apart the other side of the pump since I didn't have fluid to replace what I would have lost had I done so.  Does anyone know what type of fluid it uses?  Perhaps I'll try that and take some pictures next.

I see others have had this issue but nothing I seen discussed thus far seems to solve my issue.

I reached out to this forum to purchase a used pump/radiator setup - waiting to hear back.  If not then maybe I'll try to the other suggested setup with the dual radiators.

Any new advice out there?

Need a replacement pump - anyone parting out a Terraminer?  Will pay in Bitcoin if you like.
Will consider buying an entire machine for parts if the price is right...and of course it has at least one good pump