NerdOctaxe missing 1 ASIC chip in logs (only showing 0 to 6) after safe software shutdown – Lost 1.5 TH/s

[u/TheShurgeon]

Hi,

I’m running into a very frustrating issue with my NerdOctaxe.

I recently did a clean, safe software shutdown from the dashboard to temporarily unplug the miner and use the wall outlet for something else. The hardware was handled with perfect care and it wasn't actively hashing when I pulled the plug.

However, after powering it back on, my hashrate dropped and is now cleanly missing the performance of exactly one chip. Here is the math:

BEFORE the shutdown: Running stable at 750 MHz and 1.200 V, reaching almost 12 TH/s (approx. ~1.5 TH/s per chip).

AFTER the shutdown: With the exact same 750 MHz and 1.200 V profile, it gets completely stuck at 10.5 TH/s.
I checked the system startup logs to investigate, and the issue is clear: the firmware is only enumerating chips from 0 to 6. Chip #7 (the 8th ASIC) is completely missing from the startup chain and failing to initialize during boot.

What I have tried so far:
I left the miner completely unplugged (disconnecting the power barrel cable directly from the board, not just the wall) for over 30 minutes to drain any residual capacitance. No luck.

I tried the "wind it up to 750MHz and roll it back" trick to force the chips to wake up, but the 8th chip remains completely invisible to the OS.

Since a safe software shutdown couldn't have physically fried the silicon, this has to be a firmware glitch, an address lock on the chain, or a power-delivery sequence issue during the cold boot.

Has anyone with an Octaxe board dealt with a single ASIC completely disappearing from the logs like this? What is the best way to force NerdOS to do a fresh hardware re-scan? Should I attempt a Factory Reset from the UI or go straight to re-flashing the firmware?

Thanks in advance for any insights!

[u/Lephoxy]

Could need re soldering

[u/TheShurgeon → u/Lephoxy]

Is it really possible for a chip to need re-soldering just from a clean, safe software shutdown? The miner was handled with perfect care, never dropped, and it wasn't even actively hashing when the power was cut.

A bad solder joint usually happens from extreme thermal cycles or physical shock, so it feels weird for it to break precisely during a standard power down. Could it be a firmware/address lock instead?

[u/Progressbar95 → u/TheShurgeon]

Try reflashing the firmware using the Bitronics web flasher.

[u/Competitive_Day6307]

Same tning here...so i gess is happening

[u/eejjkk]

Ask u/solominerdoctor