PCB reverse engineering
You have a board but not the design files. Reverse engineering recovers the schematic, bill of materials, and manufacturing files from the physical board so it can be built again, repaired, or updated. Start with photos; PCB Ramp coordinates the work through verified samples and follow-on production.
Photos of both sides and a short description are enough to start. No layer count or part numbers needed.
- Start with
- A physical board, working or not. Photos first; a sample ships later if it's needed.
- You receive
- Schematics, a BOM, PCB design and manufacturing files, and assembled samples, as agreed for your project.
- Then
- Prototype fabrication and assembly, verification, and follow-on production through the same contact.
- Also called
- PCB cloning, PCB copy, board duplication, PCB reproduction. Same work, different names.
When it applies
Equipment still in service
A machine, instrument, or system depends on a board that fails occasionally and can no longer be bought. Maintenance teams need a supply of replacements — not a redesign of the equipment.
Legacy products, missing documentation
The files went with a contractor, a departed engineer, or a CAD tool nobody can open anymore. The product still sells or still needs support, and the board is the only complete record of the design.
Discontinued boards
The original supplier has closed, dropped the product, or won't take an order at your quantity. A verified clone gives you a supply you control.
Obsolete components
The design is known but can't be built as drawn because parts are end-of-life. Recovering or updating the design lets replacements be engineered in deliberately, then re-verified.
What the work may include
Not every project needs every step. A documentation-only project stops after the files are recreated; a replacement-board project runs through to production.
- 01
Physical board assessment
Construction, layer count, materials, finish, connectors, and condition are established from the board itself, and anything that will complicate reproduction is flagged early.
- 02
Component identification
Every part is identified by marking, package, and measurement where needed. Unmarked or house-numbered parts are noted, along with what it will take to characterize them.
- 03
Schematic reconstruction
Connectivity is traced from the board and drawn up as a readable schematic, so the design can be understood and reviewed rather than only copied.
- 04
BOM reconstruction
A bill of materials with reference designators, values, packages, and manufacturer part numbers where they can be established — with availability checked, so obsolete lines are known before the design is finalized.
- 05
Layout and manufacturing-file recreation
The PCB layout is recreated and manufacturing outputs — fabrication data, drill files, assembly data — are generated so the board can be quoted and built by a fabricator.
- 06
Obsolete-part replacement and design updates
Where a part is no longer available, a replacement is proposed for your approval. If no drop-in exists, the affected circuit is updated deliberately and documented. More on redesign →
- 07
Prototype fabrication and assembly
Sample boards are fabricated and assembled from the recreated files in the quantity agreed for verification.
- 08
Verification against agreed requirements
Samples are checked against what the quotation says they must do — from visual and electrical inspection to a functional test in your equipment or against your procedure.
- 09
Follow-on production
Once samples are verified, replacement boards are produced in the quantities you need, under revision control, through the same project contact. Small-batch assembly →
What you can take away
Deliverables are listed item by item in the quotation and are yours to keep. File formats, including the design-source format, are confirmed for your project.
Schematics
A readable schematic of the reconstructed circuit, with reference designators matching the BOM and layout.
Bill of materials
Reference designators, values, packages, and manufacturer part numbers where established, with availability notes and any approved substitutions recorded.
PCB design and manufacturing files
Fabrication data, drill files, and assembly data sufficient for a fabricator and assembler to build the board; design-source files in the format agreed for the project.
Assembled samples
Prototype boards built from the recreated files, in the quantity agreed for verification, with the verification results.
How a reverse engineering project runs
Six steps. You approve scope before engineering starts and see verification results before further production.
- Step 1 · You
Submit photos and requirements
Both sides of the board, what it does, whether you have a working sample, any documentation, and the outcome you want. If you're not sure of the outcome, say so — that's a valid answer.
- Step 2 · PCB Ramp
Initial assessment
A written response: what looks recoverable from the photos, what the risks are — unmarked parts, programmable devices, unusual construction — and what we'd need next.
- Step 3 · Together
Arrange a sample, if needed
Most projects need at least one board in hand. Shipping instructions come with the assessment.
- Step 4 · You approve
Confirm feasibility, scope, pricing, deliverables
The quotation lists exactly what will be delivered, what verification means for this board, what it costs, and how long it takes. Work starts on your written approval.
- Step 5 · PCB Ramp and partners
Reconstruct the design and build prototypes
Schematic, BOM, and layout are recreated; substitutions for unavailable parts are put to you for approval; sample boards are fabricated and assembled.
- Step 6 · Together
Verify before further production
Samples are checked against the agreed requirements and the results are shared. Only then are replacement boards produced in quantity.
Reproducing the layout does not automatically reproduce the function.
A PCB copy gives you the same board with the same parts in the same places. Whether it then behaves like the original depends on four things, each assessed and scoped separately.
Firmware
If a microcontroller or memory holds code, a copied board only works if that code can be supplied by you or lawfully read from the original. Protected devices may make that impossible.
Programmable devices
FPGAs, PLDs, and configured parts carry state that isn't visible in the layout. Calibration data and configuration bits are part of the function, not the board.
Component availability
A part that no longer exists forces a substitution, and a substitution is a design change. Each one is proposed to you, approved, and then re-verified.
Testing requirements
"It works" has to be defined: powers up, passes a functional check in your equipment, or meets a measured specification. The definition sets both the effort and the price.
What people ask before sending a board
Can a project start with only a physical board?
Yes. That is the normal starting point. Photos are enough for the initial assessment; the board itself is needed for the reconstruction work. Any documentation you do have — even a partial schematic or an old BOM — shortens the job.
Does the sample need to work?
Not for reconstruction — connectivity and components can be recovered from a dead board. A working sample matters for verification: it's the reference the clone is compared against. If you have both a working and a failed board, send both and say which is which.
Will the original board need to be dismantled or altered?
Sometimes. Multilayer boards may need components removed or the board sectioned to trace inner layers. The assessment tells you whether that applies to yours, and nothing destructive is done without your approval. If you have only one board and it must stay intact, say so up front — it changes the approach and may change what can be recovered.
What if components are discontinued?
Availability is checked while the BOM is reconstructed, so you know early. Options are a form-fit-function replacement, remaining stock where it can be sourced with acceptable provenance, or a redesign of the affected circuit. Each is proposed to you with the trade-offs; nothing is substituted without approval.
What if the board contains firmware?
Then the hardware and the firmware are two separate questions. The board can be reproduced; whether it runs depends on whether you can supply the firmware, whether it can be read from an unprotected device, and whether you have the right to use it. This is assessed and scoped explicitly before you commit.
What determines cost and lead time?
Layer count and construction, component count and how many are hard to identify, how much documentation you already have, which deliverables you need, whether firmware or programmable devices are involved, how verification is defined, and the prototype quantity. All of it is set out in the quotation after the assessment.
Can PCB Ramp manufacture the resulting design?
Yes. Prototype fabrication and assembly and follow-on production run through the same project contact, using the files that were just recreated. You can equally take the documentation and build elsewhere.
Start with photos of your board.
Both sides, in decent light, plus what the board does and what you're hoping for. The assessment comes back in writing with what's recoverable and what happens next. No account, no commitment.