Learning microsoldering, with a senior next to you.

The two halves of the trade

Ask an experienced technician what makes a good repairer: they’ll barely mention soldering. The hand skills, heating, placing, reworking a component, come within months of deliberate practice. What takes years the traditional way is diagnosis: knowing, in front of a dead board, which measurement to take first, what to conclude from it, and when to stop.

Years, because the traditional path has a single mechanism: accumulating seen faults. Videos show repairs that are already solved, forums answer in three days, and seniors willing to take an apprentice at their bench are rare. That bottleneck is what WrenchBoard attacks.

A virtual senior who never tires of explaining

WrenchBoard is a complete microsoldering software (boardview, schematics, diagnostic agent), but for learning, one piece changes everything: the technician profile. The agent knows who’s at the bench, and it doesn’t talk to a beginner the way it talks to a senior.

Concretely, on a dead board:

• To a beginner, the agent says: “Continuity across F1. F1 is the input fuse: if the adapter’s +24V doesn’t make it past it, nothing else can power up. An open fuse won’t beep on the multimeter.” The why, the how, the decision criterion.
• To a senior, it says: “F1: continuity.” The step, full stop.

Same fault, same fault tree, two conversations. And in both cases the boardview zooms onto the component and points at the probe pads; a beginner doesn’t need to know where F1 is to learn why it’s tested.

It’s also the answer to the self-learner’s classic wall: the complicated concepts. Boot sequence, power rails, diode-mode measurement, partial shorts: in a book or a video, the explanation is the same for everyone, and if it doesn’t land, you’re stuck. With a conversational agent, you ask “explain it differently”, and the explanation changes: simpler, by analogy, or anchored to the board in front of you. The abstract concept becomes a component the boardview shows you. A patient senior would do exactly that; this one never sighs, never judges the question, and starts over as many times as it takes.

Progress you can measure, not guess

The technician profile does more than set verbosity: it tracks your skills across sessions. Every bench action that exercises a competence, a diode-mode reading, a schematic lookup, interpreting a missing rail, is recorded with its evidence, and each skill moves through four states: unlearned, learning, practiced, mastered.

Three consequences for learning:

• You see your progress. Not a feeling, a list of skills with their real status, grounded in what you actually did.
• The agent adjusts its explanations per skill. The day diode-mode measurement reads “mastered”, it stops explaining it, and keeps detailing what isn’t.
• You know what to work on next. The skills stuck at “learning” name your next exercises.

Learning on real faults, not exercises

The flaw of theory-first learning paths: the exercises are artificial, and motivation runs dry. With WrenchBoard, every lesson is a real repair. You describe a symptom, the agent walks its fault tree, the device’s failure rules, the schematic’s electrical graph, an ordered measurement protocol; the full method is detailed on the motherboard diagnostics page, and every reading you report is logged in the repair journal.

That journal becomes your learning notebook: measured values, discarded hypotheses, confirmed cause. Re-read it after the repair and you have the full worked solution of the reasoning, something no video can give you, because it was your board and your measurements.

And nothing is lost: every repair, every measurement, every confirmed cause stays recorded. You can compare a reading before and after rework, dig up a fault you’ve already seen in past sessions, and when a similar board lands on the bench six months later, you diagnose it with your own history. That’s exactly what a senior spends years accumulating in their head and their notebooks. Here, that memory writes itself from your very first measurement, and it’s re-readable.

And because the agent is anti-hallucination by design, with every reference validated against the actually parsed board, you’re not learning a chatbot’s approximations: you’re learning what’s provable on the board.

What about the hand-skills half?

It remains essential, and it’s learned at the bench. The minimal setup: temperature-controlled fine-tip iron, entry-level hot air, a decent multimeter, quality flux (the real number-one progress factor), braid, a loupe or USB microscope, budget €300–600. The standard progression: through-hole, then two-pad SMD, jumpers on a lifted trace, multi-pin components, microscope work, and BGA last. All of it on sacrificial boards: lots of dead phones, salvaged motherboards.

The trick that links the two halves: every salvage board is also a free diagnostic exercise. Before cannibalizing it, diagnose it.

Start today

The free plan launches in the browser, no card required: pick a covered device, describe a symptom, and follow the agent’s reasoning step by step. First session, first lesson, and the technician profile starts counting what you know.