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- EZBoard - EEPROM, TMC Driver Settings, and Acceleration
- EZBoard - FAQ
- EZBoard - Installation Guide & Firmware Info
- EZBoard - Lite V1.X - BTT TFT35-E3 Wiring and Firmware Setup
- EZBoard - Lite V1.x - EZABL Not Triggering Fix
- EZBoard - Lite V1.X – Why do you use the TMC 2208 Instead of TMC 2209 Drivers?
- EZBoard – Flashing Firmware MicroSD Recommendations
- Setting up VSCode to Compile EZBoard Firmware - Local Compile
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- Bowden Fitting Clips for Tough Extruder Fittings
- Creality Extruder Motor Shaft Lengths
- Heatbreak Installation Information
- PTFE Heatbreak Installation Directions
- TH3D Ender 5 Plus ABS Tough Extruder Bracket Assembly
- Tough Extruder Firmware Settings
- Tough Extruder or E3D Titan Assembly Video
- Upgraded Aluminum Extruder Installation Video (V2)
- Using your All Metal Hotend
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- Applying Vision Miner Nano Polymer
- EZFlex/EZMat/EZPei – Adhesion Tips and Tricks
- Fitting Fans to Creality Machines – Larger Metal Standoffs
- How to use our Fan Quick Connectors (UY Style)
- Older EZABL Kits (V1/V2/V3/V3.1)
- PTFE Safety Precautions – ALL PTFE & ToughTube
- Raspberry Pi Direct Wire Power Adapter – How to connect
- TH3D High Amp 12V/24V MOSFET V2 Installation Information and Mounts
- TH3D Solid Bed Mounts Installation Information
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- Creality CR-10 V2 Firmware | V2.5.2 Board
- Creality CR-10, CR-10S, CR-20, Ender 3/5 - Dual Extrusion Board | V2.X (2560) Board
- Creality CR-10/Mini/S4/S5, Ender 2, Ender 3, Ender 5 Firmware | Melzi (V1.1.x) Board
- Creality CR-10/S, Ender 2/3/3 Pro/5/5 Pro/5 Plus, & Sovol SV01 Firmware | EZBoard Lite Board
- Creality CR-10S Mini/S4/S5/Pro, CR-20, CRX, Ender 3/5/5 Plus Firmware | V2.X (2560) Board
- Creality Ender 3 V2 Firmware + LCD Firmware | V4.2.X Board
- Creality Ender 3/3 Pro & Ender 5/5 Pro Firmware | SKR E3 Mini Board
- Creality Ender 3/3 Pro & Ender 5/5 Pro Firmware | V4.2.X Board
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- Audew JC-48A Humidor Trays
- Bowden Fitting Clips for Tough Extruder Fittings
- Ender 3 Dual Z Kit PSU Relocation STL Links
- EZABL Probe Mounts - Where to download them
- EZABL Solid Mount Camera STL Files
- EZOut Filament Sensor Mount for Wanhao Duplicator i3
- TH3D 40MM Fan Grill
- TH3D Ender 5 Plus ABS Tough Extruder Bracket Assembly
- TH3D Uno Bootloader Kit Case
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- 3D Printer Help Guide Creality & Others
- ABL Z Offset, Gantry Leveling, Babystepping, Storing Offset to EEPROM
- Creality V4.2.X Board Driver Codes
- Printer Bed Sizing Chart
- Printer Homing Types | Home Positions Explained | Min/Max/ABL Probes
- Removing Stress Marks from Printed Parts
- SKR E3 Mini, SKR E3 Turbo, Creality V4.2.2, and V4.2.7 LCD EMI Issue
- Testing and Checking your Stepper Motors
- Thermistor Values for Unified 2 Firmware
- Tips for Printing ABS Successfully with your 3D Printer
- What board is in my Ender 3D printer? | Ender 3/5
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- AnyCubic Mega Zero V1 Heated Bed Upgrade DIY Info
- CR-10S V2.0/V2.1 Temperature Repair
- Creality Press-Fit Extruder Gear Removal
- Dual Extrusion Setup Information
- EZABL Duet Board Setup Information
- Linear Advance Information for Marlin Based Firmware
- P.I.D. Bed Calibration Guide
- P.I.D. Hotend Calibration Guide
- Re-wiring 2 Pin Fan Connectors - Video
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- Arduino IDE - Mac OS X Setup Guide
- Pronterface - Using Pronterface to send GCode to your Printer
- Simplify3D - Not Connecting to Printer over USB
- Slicers - Starting Gcode Locations - EZABL
- VSCode - "No such file or directory" Error
- VSCode - Manually Selecting your Upload (COM) Port
- VSCode - PlatformIO Toolbar Missing - How to Fix
- VSCode - Problems & Terminal Tabs
- VSCode - Setup Guide for Unified 2 and Marlin 2 Firmware
- VSCode - Unified 2 Tips for Noobs (Video)
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- 3D Printer Help Guide Creality & Others
- CR-10(S) Setup and Mechanical Checks
- EZFlex/EZMat/EZPei – Adhesion Tips and Tricks
- Fan Stuck 100% or Not Coming On - Layer Fan or other Fan
- Flashing Firmware with an Uno – Useful if your printer USB port is bad
- Printer Grounding – How to Check your PSU and Grounding Your Bed
- Sensors and Gantry Grounding
- Setting your ZOffset (Video)
- Temp Reading High, MAXTEMP Error, or LCD Blank
- Testing and Checking your Stepper Motors
- Testing your SD Card for errors
- Using your All Metal Hotend
- Y Layer Shifting on Your Printer
- Z Axis Troubleshooting
- Zits or Blobs On My Prints
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- Creality BL Touch Probe Mount Offsets (Metal Bracket)
- Creality CR-10 and CR-10S Models – What Printer do you have?
- Creality CRX – EZABL, EZOut, and Firmware Videos
- Creality Ender 3 & Ender 3 Pro - Upgrades, Information, and Tips
- Ender 3 V2 - Swapping to the 12864 Creality LCD for more features
- Ender 5 Plus Upgrade Paths – EZABL, EZBoard, LCD Kit
- Unified Firmware Wanhao Duplicator i3 Plus Information
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- AC Bed Wiring with a SSR for Control
- BL Touch Wiring Harness Colors – Antclabs vs BigTreeTech (BTT)
- BL Touch Wiring Harness Colors – Antclabs vs Creality
- Creality Mega 2560 Board Connections (CR-10S/Dual Board)
- Creality Melzi Board Connections (CR-10/Ender 3/Ender 5)
- Creality V2.0/V2.1/V2.2 Board – Atmel 2560 ICSP Programming Header Pinout
- EZABL PSU 12V/24V Power Wiring
- EZABL SKR 1.4/1.4T Connection
- How to use our Fan Quick Connectors (UY Style)
- MKS Gen L Board Connections
- MKS SGen L V2 Wiring/Pinouts
- TH3D High Amp 12V/24V MOSFET V2 Installation Information and Mounts
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- COVID19 - Shipping Delays
- Route+ Insurance - FAQ
- Route+ Insurance - How to open a claim
- Route+ Insurance - Is it worth it?
- Route+ Insurance - When to file a Route+ claim, deadlines, and policies
- Shipment Received, Package Acceptance Pending - USPS Status
- Shipping to Mail Forwarders
- UK Shipping - New VAT laws
- When will my order ship?
- Wrong Address Entered at Checkout
If your printer board has the bed and/or hotend reading high all the time when the heaterblock is cold (or displays a MAXTEMP error) and you have ruled out all wiring and thermistors as the issue then this means that the IO pins on the board you have are fried. This can happen to both thermistor inputs depending on the board if one or more is shorted out/fed high voltage (over 3.3V or 5V) at any point. In severe cases the LCD may not even light or will be blank.
This can be caused by accidentally feeding 12/24V into the wire to the thermistor port on the board. Common causes of this happening is clearing filament off your hotend and shorting out the heater line to the thermistor line. This is not something that is able to be repaired on any board and will required the board to be replaced.
Another scenario is where the casing of the heaters are carrying voltage due to poor assembly which then energizes the block. In some cases this fault only occours when the heater cartridge is heated to near print temps so it can be hard to track down. Then when the screw holding the thermistor in place is over tightened (or the insulation is compromised/doesn’t cover the entire thermistor leads) it crimps the thermistor insulation and sends that voltage into the thermistor lines. You will want to check all your lines to make sure there is no continuity between any of the thermistor and heater wires. If you do not check this and replace the board the same issue will happen again.
You can verify if there was a short to the thermistor by looking at it close on the leads. The below picture was sent into us by one of our customers that had this happen to him. Notice the burn mark on the thermistor lead where the higher voltage (12V/24V) entered the lead and shorted the board thermistor IO pin.

If the damage is severe enough you may even see visual burn/melt marks on the CPU of the board as seen below.

This type of damage is not covered under our warranty as it falls under customer damage to the product.