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Hardware Redesign

In simple terms, Our PCB & hardware redesign service is the process of scanning the original circuit board, recording component details and locations, extracting the bill of materials (BOM), procuring necessary components, and scanning the empty board to create an image file. The PCB file is then sent to a board factory where the board is manufactured. After purchasing the components, they are soldered onto the PCB board, followed by circuit board testing and debugging.

The specific technical steps are as follows:

1. Obtain a piece of the PCB: Record model parameters and component locations on paper, especially diodes, transistors, and IC gaps. Take clear photos of the key locations. Some components may be hidden under advanced layers on the PCB.

2. Remove all devices and clean the PCB with alcohol. Place the PCB in the scanner, adjusting the scanning resolution for a clearer image. Lightly polish the paper yarn and place the PCB vertically and horizontally in the scanner for optimal scanning results.

3. Adjust contrast and brightness of the scanned image in image editing software, converting it to black and white for better visibility of the lines. Repeat this step if necessary. Save the top and bottom images as black and white BMP format files.Convert the BMP format files to PROTEL format files, transferring them to the corresponding layers in the PROTEL software. Ensure alignment of pad and VIA positions on both layers. If there are any deviations, repeat step 3. Attention to detail is crucial for high-quality PCB copy.

4. Overlay the TOP layer BMP onto the TOP PCB, converting it to the SILK layer. Position the scanned lines to match the drawing of devices from step two. Delete unfinished SILK layers. Repeat this process for all layers.

5. Transfer the TOP and BOTTOM PCB layers in PROTEL. Check if the layers match the design.

6. Print the TOP and BOTTOM layers using a laser printer onto transparency film (1:1 ratio). Compare the printed film with the original PCB for accuracy.

The process outlined above represents the completion of the PCB copy. However, it is important to note that the copied board's electronic performance may not be identical to the original. Additional testing is required to ensure functionality.

Multilayer Copying Method:

For multilayer boards, the copy board process involves repeating the copying process for each pair of layers. For example, a four-layer board requires copying two pairs of panels, and a six-layer board requires copying three pairs. Multilayer copying can be challenging as the internal layers are not visible. Sanding the board's surface is often used to reveal the inner layers, as it provides the most accurate results.

Shenzhen Eastdo Technology Co., Ltd. is a professional PCB design service provider and one-stop solution company. With years of experience in the PCB industry, we offer services such as PCB design, PCB copy board, chip decryption, BOM table production, chip parameter analysis, and more. Our professional team of engineers and technicians can handle single to twenty-eight layer PCB copy boards, PCB design, SI analysis, EMC design, schematic design, BOM production, PCB production, prototyping, testing, and other technical services. We are dedicated to providing highly professional and quality services to both new and existing customers.