A wrench laid over a phone on a cream panel, in navy and gold, the wrench crossing the phone diagonally above the course title.

Starvard University · Fix Your Own Gadgets

Fix Your Own Gadgets

You will stop throwing away phones, laptops, and appliances that need only a simple repair. This course teaches you to diagnose first, work safely, replace a battery or a screen, upgrade a laptop, and find honest parts and guides, step by step.

Finn

Hello, my name is Finn, and I'm going to help you understand this course.

Here it is, explained like you are 10:

Lots of gadgets get thrown away when only one small part has worn out, like a tired battery or a cracked screen. This course shows you how to figure out what is actually broken, open a device carefully and safely, swap the worn part for a new one, and put everything back together. You save money, you keep good machines working longer, and you learn a skill you can share with your neighbors.

The whole course in brief

What you will be able to do after this course

  1. You will be able to explain the right to repair and why access to parts, manuals, and tools matters.
  2. You will be able to assemble a basic repair toolkit and set up a clean, well lit workspace.
  3. You will be able to work safely around electronics, handle static, and name the repairs you should never attempt.
  4. You will be able to diagnose a fault with tests and questions before you open a device.
  5. You will be able to replace a phone battery in the right order, after checking your warranty first.
  6. You will be able to judge whether a cracked screen is a repair you can do, and what it involves.
  7. You will be able to upgrade a laptop with more memory and a faster storage drive.
  8. You will be able to check a small appliance for a blown fuse, a failed switch, or a damaged cord, safely unplugged.
  9. You will be able to find parts and guides for your exact model and spot low quality parts.
  10. You will be able to back up photos, files, and settings before any repair begins.
  11. You will be able to plan and host a friendly neighborhood fix-it day.

The eleven lessons

Lesson 1

The right to repair and why it matters

When a phone battery fades or a washing machine stops, the owner often faces a narrow set of choices: pay the maker, visit an authorized shop, or replace the whole thing. The right to repair is the idea that this choice should be wider. Owners and independent repair shops should be able to get the parts, manuals, diagnostic tools, and information they need to fix a product, at a fair price and in good time.

That idea has serious backing. The Federal Trade Commission studied repair restrictions and, in its 2021 report to Congress called Nixing the Fix, found scant evidence to support makers justifications for those restrictions. The Commission described ways repair gets limited, including designs that complicate repair, parts and information kept unavailable, and software locks. iFixit, the free repair guide community founded in 2003, argues the same point from the workshop floor: repair saves money and reduces the environmental cost of making and throwing away electronics.

For you, the lesson is practical. A repairable product keeps its value, a repair you can do yourself costs a part instead of a new device, and a local shop that can get parts stays in business. When you shop, favor products with available parts and published guides. When something breaks, ask first whether it can be fixed, by you or by someone nearby, before you ask what its replacement costs.

Repair is a right worth using. Access to parts, manuals, and tools turns a broken gadget from trash into a project with a happy ending.

Lesson 2

A basic repair toolkit

You do not need a workshop full of gear to do most gadget repairs. You need a small, decent set of tools that fit the screws and fasteners modern devices actually use. Start with a precision screwdriver set that includes small Phillips, flathead, and the star shaped bits many phones and laptops use. Add a pair of tweezers for tiny connectors, a plastic spudger and opening picks for prying without scratching, and a suction cup for lifting screens that are held with adhesive.

Round out the kit with a magnetic parts tray or a plain ice cube tray, so every screw has a home in the order you removed it. A headlamp or a bright desk lamp matters more than people expect, because the screws are small and the connectors are smaller. Keep a soft mat or a clean towel under your work to stop parts rolling away, and keep a phone or notebook nearby for photos and notes as you go.

Buy tools once and buy them fairly well. Cheap bits round off and can chew up a screw head, which turns a twenty minute job into a stuck one. Store the kit together, lend it freely, and replace any bit that starts to slip. With this one small box, you are ready for batteries, screens, laptop upgrades, and most of the repairs in this course.

Small tools, kept in order. A modest kit, a bright light, and a tray for screws will carry you through most home repairs.

Lesson 3

Electronics safety and static

Safety comes before curiosity, every time. Start with the stop items, and learn them cold. A swollen or punctured lithium battery is a stop item: do not charge it, do not puncture it, do not keep using the device, and take the battery or the device to a proper battery recycling drop off for handling. A battery that bulges, smells sweet or chemical, or gets hot on its own is telling you to stop and get it handled properly.

For anything that plugs into the wall, unplug it before you open it, and keep it unplugged while you work. Some repairs are never do it yourself jobs. Microwave capacitors can hold a lethal charge long after the microwave is unplugged, and a microwave is never a DIY repair. The same caution applies to anything you do not fully understand: if a guide warns you off, believe the guide.

Static electricity is the quieter risk. A tiny discharge you cannot even feel can damage sensitive electronics. Work on a hard surface rather than carpet, touch a grounded metal object before you begin, handle boards by their edges, and keep parts in their protective bags until you need them. Power the device fully off before you open it, and disconnect the battery early in any phone or laptop repair, as your guide directs.

Know the stop items by heart. Swollen batteries, mains power, and microwave capacitors are not challenges to beat. They are lines to respect.

Lesson 4

Diagnosing before you open anything

The best repairers open devices last, not first. Diagnosis begins with questions. What exactly changed, and when did it start? Did the problem arrive after a drop, a spill, an update, or a new app? Does it happen always, or only when the battery is low, the device is hot, or one particular program is running? Honest answers narrow the field before a single screw turns.

Next, run the free tests. Restart the device. Try a different charging cable, outlet, and charger, because cables fail far more often than phones do. Check storage space, update the software, and note any error messages word for word so you can search them. For a laptop that will not start, listen for fan or drive sounds and watch for lights: signs of life point you in a very different direction from total silence.

Only when simple causes are ruled out should you reach for a guide and a screwdriver. Write down your best guess and what would prove it wrong, then open the device looking for that evidence: a loose connector, a corroded contact, a battery that has clearly aged out. Good diagnosis means most repairs end up smaller, cheaper, and safer than the owner first feared.

Questions first, screwdriver last. Half of good repair is proving what the fault is, and what it is not, before anything comes apart.

Lesson 5

Replacing a phone battery

Phone batteries are consumables. After a few years of daily charging, most hold noticeably less charge, and a phone that dies by afternoon or shuts down without warning is often asking for a battery, not a replacement phone. Before you order anything, be honest about one thing first: opening a device can void its warranty. Check your warranty first, while the phone still works, and if it is covered, let the maker handle the repair.

If you go ahead, work from a guide written for your exact model, because battery removal differs from phone to phone. The usual shape of the job is this: power the phone off, remove the back or screen as the guide directs, disconnect the battery connector before anything else, and ease the old battery out without bending or puncturing it. Adhesive strips hold many batteries in place, and patience, not force, is what gets them out whole.

Seat the new battery, reconnect it, and test the phone before you seal everything back up. Charge it, make a call, and confirm the percentage climbs steadily. If the old battery is swollen at any point, stop, follow the safety lesson, and take it to a proper battery recycling drop off instead of finishing the job. A calm test before closing up saves you opening the phone twice.

Test before you seal it up. A new battery, fitted patiently and tested while the phone is still open, gives an old phone years of new life.

Lesson 6

Replacing a cracked screen

A cracked screen is the most visible gadget injury, and often the most repairable. Start, as with the battery, with honesty about coverage: opening a device can void its warranty, so check the warranty first, and weigh a covered repair against doing it yourself. Then check what a screen replacement for your model actually involves. On some phones it is a tidy job. On others the screen is the door to everything else, and the repair is long and delicate.

Work from the guide for your exact model and read it fully before you touch a tool. Screens are usually held by clips, screws, and adhesive, and gentle heat often softens that adhesive so the panel lifts without shattering further. Photograph each step, keep screws in order, and transfer small parts, like earpiece speakers or home buttons, exactly as the guide shows, because a missing tiny part can cost you a feature you use every day.

Connect the new screen and test it before final assembly: touch in every corner, brightness up and down, and a call to check the sensors near the earpiece. Only then press it home and fit the screws. A screen protector and a decent case, fitted the same day, are the cheapest way to make sure this is a repair you only do once.

Read the whole guide first. Screen work rewards patience: heat, photos, a full test while it is still open, and a protector fitted the same day.

Lesson 7

Laptop upgrades: memory and storage

Many laptops that feel slow are not worn out. They are short of memory, or still running on an old spinning hard drive, and those are the two friendliest upgrades in all of computing. More memory, often called RAM, lets the machine hold more programs open at once without stalling. Swapping a hard drive for a solid state drive, an SSD, makes starting up, opening files, and loading programs dramatically quicker, often in a single afternoon.

Before you buy, confirm what your exact model can take. Check how many memory slots it has, what type of memory it uses, and whether the drive is replaceable at all, because some slim laptops have parts soldered in place. Your model guide and the maker support pages will tell you. Buy parts that match those specifications exactly, and back up your files first, following the backup lesson, before the drive comes out.

The job itself is usually gentle: power off, unplug, remove the bottom panel, and ground yourself against static. Memory sticks click into their slots at an angle and press flat. A drive swap means removing a few screws, moving the bracket to the new drive, and then installing your system or restoring your backup. Test the machine fully before you refit every screw, and enjoy what feels like a new computer for the price of a part.

Slow often means upgradeable. More memory and a solid state drive can give an aging laptop a second life, for far less than a new machine.

Lesson 8

Fixing small appliances: fuses, switches, and cords

Small appliances fail in small ways. A lamp, a fan, a kettle, or a toaster that suddenly does nothing at all is often stopped by one humble part: a blown fuse, a worn switch, or a damaged cord. Start every appliance repair the same safe way: unplug it, and keep it unplugged while you work. Check the outlet with a lamp you know works, and check the plug fuse where your plugs have one, because the fault is not always inside the appliance.

Cords deserve a close look, especially near the plug and where the cord enters the body, the two places cords flex and fray. A cord with cut, crushed, or exposed insulation is not a tape it up job: replace the cord or retire the appliance. Switches fail by wearing out or filling with dust and crumbs, and a switch that feels loose, crackles, or works only at one angle is asking to be replaced with an identical part.

Fuses protect the appliance and your home by failing first when something draws too much current. Replace a fuse only with one of the same type and rating, printed on the fuse itself. If the new fuse blows right away, stop: something deeper is wrong, and that appliance belongs with a professional, or at the recycling drop off, not back on your counter. Knowing when a repair is finished, or should not start, is a repair skill too.

Unplug, inspect, replace like with like. Fuses, switches, and cords explain most dead appliances, and a fuse that blows twice is a message, not bad luck.

Lesson 9

Finding parts and guides

A repair is only as good as its guide and its parts. For guides, start with iFixit, which publishes free step by step repair guides, written and photographed by its community and staff, for thousands of devices. Search by your exact model name and number, not just the product family, because two phones with similar names can open in completely different ways. Read the whole guide, including the comments from people who did the repair before you, before you order a single part.

Parts take a little judgment. Prefer parts from the maker self repair program or a reputable parts seller who states what the part is, offers a warranty on it, and accepts returns. Be wary of prices that seem too good, batteries with no brand or rating printed on them, and listings that never name the exact model the part fits. A battery or screen that fails in a month is no bargain, however cheap it was.

When the part arrives, compare it with the old one before you fit it: connector shape, screw holes, and cable length should all match. Keep the packaging and receipt until the repair has worked for a week. If no guide or trustworthy part exists for your device, that is useful information too. It tells you to try a good local repair shop, which may have supplier access you do not, before you declare the gadget finished.

Exact model, honest parts. The right guide for your precise model, and a part with a real warranty behind it, are half the repair.

Lesson 10

Data backup before any repair

Hardware can be replaced. Photos of people you love, years of messages, and the only copy of an important document cannot. That is why backup comes before repair, every time, even for a job as simple as a battery swap. A repair can go sideways, a connector can tear, a drive swap can expose a failing old drive, and a phone that worked this morning can refuse to start by tonight through no fault of yours.

A good backup is simple and complete. Back up your phone to a computer or a cloud account and confirm the backup finished, with todays date on it. Copy laptop files to an external drive or cloud storage, and check that a few important files actually open from the backup copy. Note your important account details and make sure you know the passwords and sign in methods you will need if the device comes back reset to factory settings.

Keep the habit, not just the one off copy. Set up automatic backups where your device offers them, so the safety net is always recent. Before a storage drive upgrade, a backup is not a precaution, it is the whole plan, because your files will live on that backup until they are restored onto the new drive. Ten quiet minutes of backing up has saved more memories than any repair skill ever will.

Back up first, always. Parts are replaceable and memories are not. A finished, checked backup is the first step of every repair.

Lesson 11

Host a neighborhood fix-it day

Repair is more fun, and more likely to happen, together. A neighborhood fix-it day is a simple gathering where people bring broken gadgets, lamps, bikes, and small appliances, and fix them side by side, sharing tools, guides, and encouragement. Pick a date, a garage, hall, or library room with tables and outlets, and spread the word with a short list of what to bring: the broken item, any parts it needs, and its charger or power cord.

Set up like a friendly workshop. Have the basic toolkits from this course on the tables, a laptop open to the repair guides, extension cords kept tidy, and a clearly marked box for batteries and parts that need proper recycling. Pair beginners with anyone who has done a repair before, start each item with diagnosis, and celebrate every fix out loud. Keep the safety rules visible, and have a polite plan for items that turn out to be stop items or professional jobs.

End by counting what you saved together: items fixed, items diagnosed, and items honestly retired for recycling. Take a group photo, thank the venue, and set the next date while everyone is still smiling. A fix-it day does more than repair gadgets. It teaches a whole street that broken is not the same as finished, and that skill, shared freely, is a kind of wealth.

Broken is not the same as finished. One table, shared tools, and patient neighbors can repair far more than gadgets. They repair habits.

Sources

The guides behind this course

This course is built on free repair guides and on the public record of the repair debate. iFixit guides are shared under a Creative Commons license, and the FTC report is a United States government publication.

Graduation

You finished Fix Your Own Gadgets

You learned why the right to repair matters, built a basic toolkit, and memorized the safety stop items. You practiced diagnosing before opening, replaced a phone battery and a cracked screen on paper and in principle, upgraded a laptop with memory and storage, checked small appliances for fuses, switches, and cords, and learned to find honest parts and guides. You backed up before every repair, and you finished by planning a fix-it day for your neighbors. Keep the toolkit handy. The next broken gadget in your house is now a project, not a purchase.

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