Troubleshooting Broken Electronics
Learn how to diagnose dead or malfunctioning gadgets systematically. Master visual inspection, multimeter detective work, and live voltage tracing to pinpoint broken components without guessing.
Like Duolingo, but for Troubleshooting Broken Electronics. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
18 levels across 3 sections, about 36 minutes end to end, roughly 7 days at five minutes a day. It moves through The First Checks and Safe Testing, Tracing Signals on Live Boards, and Pinpointing and Repairing the Cause. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in Troubleshooting Broken Electronics
- Visual and sensory checks reveal burnt traces, blown parts, or liquid damage within minutes
- Powering on a damaged board before inspecting it risks causing short circuits and destroying more components
- Healthy electrolytic capacitors are flat on top; doming or crusty venting indicates internal failure
- Heat browning on the PCB substrate marks components that drew excessive current
- Vaporized component packaging and leaked dielectric fluid produce distinct, pungent smells
- DC power barrel jacks crack solder joints from cable tugging and repeated plugging
- Flex ribbons fatigue, tear, or come unseated at hinges and sharp bends
- Battery contacts corrode or lose spring tension from thermal cycles and battery swaps
- Power refusal means zero signs of life (no LEDs, no sound, no rail voltage)
- Corrupted behavior means power delivery works, but data, memory, or processing logic is compromised
- Triage buckets prevent wasting time troubleshooting power regulation when logic or connections are broken
- Unplugging mains power is the vital first step to remove live source voltage
- Power supply filter capacitors can store lethal charge long after the plug is pulled
- Capacitors must be safely drained and verified empty before touching traces or metal leads
- Continuity mode sends a small test current between the probes to check if the loop is complete
- An audible beep signals that electricity flows freely from one probe to the other without a break
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Troubleshooting Broken Electronics the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
What can happen if you turn on a broken circuit board before looking it over?
Get it right to open this lesson and 17 more in the app.
Where Troubleshooting Broken Electronics takes you
- 1
The First Checks and Safe Testing
- The Five-Minute Visual Inspection
- Multimeter Continuity and Resistance Checks
- 2
Tracing Signals on Live Boards
- Following the Power Rails
- Isolating Faults by Subsystem
- 3
Pinpointing and Repairing the Cause
- Finding and Replacing Failed Components
- Hunting Intermittent and Environmental Faults
3 sections · 6 units · 18 levels. Built to play, not to enroll.
You pick the voice
Troubleshooting Broken Electronics is taught in the Explain Like I'm 5 style: no big words. promise.. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Troubleshooting Broken Electronics today.
Download Tomo, search Troubleshooting Broken Electronics, and play your first lesson in under a minute.