To replace the microcontroller in a NOCO Boost, you need to carefully open the device, desolder the faulty microcontroller chip, and solder a new one while ensuring all connections are secure and intact
This process requires patience, precision, and some basic electronics skills, but it can save you from buying a completely new jump starter.
NOCO Boost devices are trusted portable battery boosters that many rely on for emergency car starts. However, like any electronic device, internal components like the microcontroller can fail over time, causing the unit to malfunction or stop working altogether. If you’re facing this issue, knowing how to replace the microcontroller can extend your NOCO Boost’s lifespan and keep it running smoothly.
Before you dive in, it’s important to have the right tools and replacement parts, as well as a steady hand for soldering.
Best Tools for Replacing the Microcontroller in a NOCO Boost
When replacing the microcontroller in your NOCO Boost, having the right tools makes all the difference between a smooth repair and a frustrating experience. Here are the top three tools you’ll need to get the job done efficiently and safely:
Hakko FX888D Soldering Station
This soldering station offers precise temperature control, essential for delicate microcontroller soldering without damaging the board. Its ergonomic design ensures comfort during extended repairs, making it a favorite among electronics hobbyists and professionals.
Kaisi 12-in-1 Electronics Repair Tool Kit
This versatile kit includes fine-tipped screwdrivers, tweezers, and a desoldering pump — everything you need to open your NOCO Boost and remove the microcontroller safely. The quality of the tools helps prevent damage to tiny screws and components.
Weller Desoldering Pump
For removing the faulty microcontroller, a reliable desoldering pump is critical. The Weller pump quickly and cleanly sucks up melted solder, reducing the risk of damaging the circuit board and speeding up the replacement process.
Preparing Your Workspace and Safety Tips Before Starting
Before you start replacing the microcontroller in your NOCO Boost, setting up a clean, organized workspace and following key safety precautions is essential. This preparation helps avoid mistakes and protects both you and the device.
Choose a Well-Lit, Clean Workspace
Good lighting is crucial when working with tiny electronics. Pick a table or desk in a quiet area with bright, natural or white LED light. Clear off any clutter — you want only the tools and parts you need on the surface. This helps prevent losing small screws or components.
Gather All Your Tools and Parts
Before opening your NOCO Boost, make sure you have everything ready: soldering station, desoldering pump, replacement microcontroller, screwdrivers, tweezers, and a multimeter. Having all these at hand prevents interruptions mid-repair.
Use an Anti-Static Mat and Wrist Strap
Electrostatic discharge (ESD) can damage sensitive electronic components. Place an anti-static mat on your work surface and wear an anti-static wrist strap grounded properly. This protects the internal circuits from static electricity that could permanently damage the microcontroller or other parts.
Disconnect Power Sources
Ensure your NOCO Boost is completely powered off and disconnected from any battery or charging source. Working on a live device risks electric shock and could short-circuit internal components.
Ventilation and Fire Safety
Soldering produces fumes that can irritate your lungs. Work in a well-ventilated area or use a small fan to blow fumes away from your face. Keep a fire extinguisher nearby just in case, and never leave your soldering iron unattended when powered on.
Organize Small Parts
Use small containers or magnetic trays to keep screws and components organized. Labeling parts as you remove them helps ensure you can reassemble everything correctly later.
Step-by-Step Process to Remove the Faulty Microcontroller
Removing the faulty microcontroller from your NOCO Boost requires careful attention and precision. Follow these numbered steps to ensure you safely and effectively detach the damaged chip:
Step 1: Open the NOCO Boost Case
Use the appropriate screwdriver from your tool kit to carefully remove all screws securing the outer case. Keep these screws organized so you don’t lose them. Gently pry open the case, avoiding excessive force to prevent cracking the plastic or damaging internal components.
Step 2: Locate the Microcontroller on the Circuit Board
Once the case is open, identify the microcontroller chip. It’s usually a small rectangular or square integrated circuit (IC) with multiple pins soldered to the circuit board. Refer to your NOCO Boost’s schematic if available for exact identification.
Step 3: Inspect and Document the Connections
Before desoldering, take a clear photo or make a detailed sketch of the microcontroller’s orientation and connections. This visual reference will be vital when installing the replacement chip.
Step 4: Heat Your Soldering Iron
Set your soldering station to the recommended temperature (typically around 350°C or 662°F for lead-free solder). Let it fully heat up before proceeding to ensure clean solder melting.
Step 5: Desolder the Microcontroller Pins
Using your soldering iron and desoldering pump, gently heat each pin on the microcontroller while simultaneously removing the melted solder with the pump. Take your time with this step to avoid lifting pads or damaging the circuit board.
Step 6: Remove the Microcontroller Chip
After all pins are free of solder, carefully lift the microcontroller off the board using tweezers. If the chip resists, double-check for any remaining solder and gently free it without applying force.
Step 7: Clean the Solder Pads
Use solder wick or a desoldering braid to clean excess solder from the pads on the circuit board. A clean surface is essential for a reliable connection when you install the new microcontroller.
Installing the New Microcontroller and Testing Your Repair
After successfully removing the faulty microcontroller, it’s time to install the replacement and ensure your NOCO Boost works perfectly again. Follow these steps carefully to avoid common pitfalls and confirm the repair.
Step 1: Prepare the New Microcontroller
Make sure the replacement microcontroller is the exact match for your NOCO Boost model. Inspect the pins for any bends or damage and straighten them gently if needed. Confirm the chip’s orientation matches your reference photo or diagram.
Step 2: Position the Microcontroller on the Board
Place the new microcontroller onto the clean solder pads, aligning each pin correctly with its corresponding pad. Use tweezers for precision and double-check orientation — an incorrect placement can cause the device to malfunction or even damage the chip.
Step 3: Tack Solder a Corner Pin
To secure the chip in place, lightly solder one corner pin first. This “tack” holds the microcontroller steady so you can solder the remaining pins without movement.
Step 4: Solder All Remaining Pins
Carefully solder each pin individually. Use a clean, well-tinned soldering iron tip and avoid applying too much heat, which could damage the chip or circuit board. Keep your solder joints neat and shiny, ensuring good electrical connection without solder bridges between pins.
Step 5: Inspect Your Work
Use a magnifying glass or magnifier to inspect the solder joints. Look for cold joints (dull or cracked solder), solder bridges (unintended connections between pins), or missed pins. Fix any issues by reheating or removing excess solder.
Step 6: Test Electrical Continuity
Before reassembling, use a multimeter to check continuity between pins and surrounding traces to ensure no shorts exist. This is a critical step to avoid damaging the device when powering it on.
Step 7: Reassemble the NOCO Boost
Carefully place the circuit board back into the case, ensuring no cables are pinched or displaced. Replace the screws and tighten them securely but without overtightening.
Step 8: Power On and Test the Device
Turn on your NOCO Boost and test its functionality. Check if it powers on normally, performs jumps as expected, and charges properly. If it works, congratulations — you’ve successfully replaced the microcontroller!
Troubleshooting Common Issues After Microcontroller Replacement
Even with careful work, sometimes your NOCO Boost might not function perfectly right after a microcontroller replacement. Here are common issues you might encounter and how to address them:
Device Won’t Power On
If your NOCO Boost doesn’t turn on, double-check the microcontroller’s orientation. Reversed placement is a common cause. Also, inspect solder joints for cold solder or missed connections that interrupt the circuit.
Intermittent Power or Unstable Operation
Unstable behavior often points to loose solder joints or solder bridges creating short circuits between pins. Use a magnifier to inspect your work and resolder any suspicious joints. Also, verify there are no tiny solder splashes connecting adjacent pins.
Overheating Microcontroller
If the chip heats up quickly, it could be a short circuit or incorrect component installation. Power off immediately and test continuity between pins to detect shorts. Check that you used the exact replacement chip specified for your model.
Battery Not Charging or Jump Starting
This could be caused by damaged circuit board traces or incomplete solder connections on the microcontroller pins related to power management. Carefully review the circuit for any lifted pads or broken connections.
Error Codes or Warning Lights
Consult your NOCO Boost’s user manual to understand error indicators. Sometimes, replacing the microcontroller may require a reset or firmware update, if applicable.
Tips to Fix These Issues:
- Use a multimeter to test continuity and voltage levels at critical points.
- Reheat and resolder any suspicious connections.
- Compare your soldering work to clear reference photos.
- Ensure the replacement chip is genuine and correctly specified.
If problems persist after troubleshooting, seeking professional electronics repair help might be a wise choice to avoid further damage.
Conclusion
Replacing the microcontroller in your NOCO Boost is a delicate but achievable task when you prepare properly and follow each step carefully. From setting up a safe workspace to desoldering the faulty chip, installing the new one, and testing your repair, every stage demands patience and attention to detail.
Remember, protecting your device from static damage and verifying connections before powering it up are crucial to success. If issues arise, troubleshooting common problems like solder bridges or incorrect chip orientation often solves them. By taking these precautions and following this guide, you can confidently restore your NOCO Boost’s functionality and extend its life.
If you want to explore more about battery maintenance or troubleshooting other NOCO Boost issues, check out our related articles for additional tips and insights.
Frequently Asked Questions About How to Replace the Microcontroller in a NOCO Boost
How do I know if the microcontroller in my NOCO Boost is faulty?
Common signs include the device not powering on, erratic behavior, failure to charge, or displaying error codes. If basic troubleshooting doesn’t help, the microcontroller might be damaged and need replacement.
Can I replace the microcontroller myself if I have no prior electronics experience?
While it’s possible, microcontroller replacement requires precision soldering skills and proper tools. If you’re unfamiliar with electronics repair, it’s safer to seek professional help to avoid damaging your device.
What tools do I need for the replacement?
You’ll need a soldering iron with a fine tip, desoldering pump or solder wick, precision screwdrivers, tweezers, a multimeter, and an anti-static wrist strap to prevent static damage.
Where can I get a replacement microcontroller for my NOCO Boost?
It’s best to purchase the exact replacement chip from authorized electronics suppliers or directly from NOCO if available. Avoid generic parts as compatibility issues can damage your device.
How do I prevent damaging the NOCO Boost during repair?
Prepare a clean, static-free workspace, disconnect all power sources, and use an anti-static wrist strap. Work slowly and carefully when desoldering and soldering to avoid damaging circuit board pads.
What should I do if my NOCO Boost doesn’t work after replacement?
Check the chip orientation, inspect for solder bridges or cold joints, and verify all connections with a multimeter. If problems persist, consult a professional technician or contact NOCO support.
Is there a warranty or service option for microcontroller replacement?
Usually, replacing internal components yourself voids any warranty. Check NOCO’s official service options before attempting a DIY repair, especially if your device is still under warranty.