When your miner background shows "Offline" or "Real-time Hashrate is 0," it is usually caused by abnormalities in hardware, network, or configuration items. Please follow the priority order below to check step by step:

Step 1: Hardware Check

First, confirm whether the miner hardware meets the basic operating conditions:

Power Status: Confirm if the miner's power indicator light is on and if the power cord is loose.

Cooling Control: Check if the fans are rotating normally. If the fans stop or the speed is abnormal, the miner may automatically shut down due to high-temperature protection.

Alarm Lights: Observe the warning light on the control board (usually red). If the red light is solid or flashing, please record the flashing frequency and consult the miner manual.

Basic Restart: Try disconnecting the power for 30 seconds and then reconnecting it to see if the miner can re-enter the boot process.

Step 2: Network Connectivity

Network fluctuations are the most common cause of disconnection:

Link Check: Confirm if the green light of the network cable port is solid and the yellow light is flashing. Try replacing the network cable or router port to rule out physical wear.

Intranet Positioning: Use a scanning tool (such as IP Reporter or the router backend) on a computer under the same local area network to confirm if the miner IP can be found.

External Connectivity Test:

Ping the mining pool address on the computer to check latency and packet loss rate.

If the Ping fails, please check the router dialing status or consult your operator (ISP) for line failures.

Equipment Recovery: Try restarting the router and switch to eliminate data congestion caused by enterprise-level firewalls or router cache accumulation.

Step 3: Configuration Audit

Incorrect configurations will prevent the miner from shaking hands with the mining pool:

Stratum Address: Check if the mining pool URL is accurate (including the protocol header), for example: stratum+tcp://ltc.asia1.whalepool.com:13510 (refer to the mining pool's official website for the latest).

Worker Name Format: Confirm the worker name filling specifications (usually: AccountName.MinerNumber), paying attention to lowercase letters and punctuation.

Port Validity: Some operators may block default ports (such as 3333 / 4444). Please try replacing them with backup ports or SSL ports provided by the mining pool.

Step 4: System Logs and Core Analysis

If the miner can enter the background but has no hashrate, you need to check the underlying errors:

Kernel Log: Log in to the miner backend and check the end of the Log.

If it shows Socket connect failed: Mostly due to network restrictions or incorrect mining pool addresses.

If it shows Chain 0: 0 ASICs detected: Mostly due to hardware damage to the hashboard.

Firmware Version: Confirm if the firmware is the latest official version. Outdated firmware may be incompatible with new mining protocols (such as ALEO's ARC-46 protocol upgrade).

Step 5: Firewalls and Network Environment Restrictions

Port Interception: Some enterprise or public networks will identify and intercept the Stratum protocol.

DNS Hijacking: Try manually modifying the DNS in the miner backend to a public DNS (such as 8.8.8.8 or 114.114.114.114).

DMZ / Forwarding: If conditions permit, set the miner IP as a DMZ host in the router to rule out intranet interception.

Maintenance Tips

To ensure long-term stable earnings under the PPLNS model, the following operations are recommended:

Environmental Monitoring: Keep the ambient temperature between 5°C and 35°C. Excessive temperatures will directly lead to hashrate decay.

Power Stability: Use high-quality power cords. For mining farms with the necessary conditions, it is recommended to configure a UPS or voltage regulator.

Regular Dust Removal: Physically remove dust from the miner every 3-6 months to prevent short circuits or overheating caused by dust accumulation.

Backup Pools: Configure 2-3 backup mining pool addresses (Failover) in the miner backend to ensure that hashrate will not be interrupted when the main address fluctuates.