01
Preserve the reasoning
Keep the observations, test choices, measurements, ruled-out causes, and definitive test connected to the repair.
Our story
The best resource is you.
The most valuable lesson from a difficult repair often exists nowhere except in the person who solved it.
Why Diagdex exists
The manual could only take the job so far.
Working on older equipment often means faded diagrams, dusty binders, and service books that have passed through a shop for decades. They still matter. They explain the system and establish the approved procedure.
But the missing resource is often the person who repaired those machines year after year—the one who remembers which symptom matters, what usually misleads you, which test should come first, and how to reach the part without losing half a day.
That knowledge is earned through repetition, mistakes, measurements, and repairs that finally worked. When an experienced technician retires, leaves the trade, or passes away, much of it can disappear because it was never captured in a useful form.
01
Which symptom deserves attention first
02
Which test will separate the likely causes
03
Which reading actually proves the failure
04
Which warning or shortcut the procedure leaves out
Our mission
Keep experience alive and useful.
A repair record should preserve more than the failed part. It should preserve how you knew.
DiagDex begins with the repair story you already write. It helps make that story complete, preserves your final approved version, and keeps the experience available when a similar job returns. Your work and approval establish what can be trusted.
Every repair makes the next faster.
About the founder
Built from experience in the trade.
DiagDex was started by a heavy-equipment technician who recognized that the industry’s greatest asset is technician experience—and that too much of it disappears before it can help the next person.
The future
A living memory for the trade.
The goal is not to replace technicians with generated answers. It is to make sure real diagnostic experience can accumulate, stay connected to evidence, and remain available long after the original repair.
02
Return it when it matters
Make approved experience searchable by machine, symptom, code, system, failure, and the language technicians actually use.
03
Pass the trade forward
Give the next technician a stronger starting point without pretending experience can be replaced by a model or a manual.
Private repair memory comes first. Any future sharing should remain optional, de-identified, reviewed, and grounded in completed work rather than unverified conversation.
Help build the memory