Surgeon grade rework and repair, by the book and guaranteed.®
Newsletter | Contact Us
Phone: 978-374-5000
  

2.6.3 Legend Marking, Stencil Method

  • This method can be used to add, change or replace legend and markings on printed boards using epoxy ink a stencil.
  • Position the stencil on the circuit board surface and hold in place then roll or brush the ink onto the stencil.
  • Completed legend repair.
Outline
This method can be used to add, change or replace legend and markings on printed boards or printed board assemblies. This method uses epoxy ink and a brush or roller technique. A stencil is used to outline the characters.

Proprietary Information Proprietary
This guide may contain proprietary or copyright-protected information for access by authorized persons only.

Minimum Skill Level - Intermediate
Recommended for technicians with skills in basic soldering and component rework, but may be inexperienced in general repair/rework procedures.

Conformance Level - High
This procedure most closely duplicates the physical characteristics of the original, and most probably complies with all the functional, environmental and serviceability factors.

Acceptability References
IPC-A-600 2.0 Externally Observable Characteristics  Proprietary
IPC-A-610 8.0 Marking  Proprietary
Procedure References
1.0 Foreword
2.1 Handling Electronic Assemblies
2.2 Cleaning
2.5 Baking And Preheating
2.7 Epoxy Mixing and Handling
IPC7721 2.6.3 Legend/Marking, Stencil Method
Tools and Materials
Cleaner
Cleaner
General purpose cleaner for removing contamination.
CircuitMedic Part
Cleaning Brushes
Disposable brushes for use with solvents for cleaning and application of coatings.
Coatings
Color Agents
Use to tint the color of epoxy used for solder mask repair or circuit base board repair.
CircuitMedic Part
Circuit Bond Packs
Clear, superior strength epoxy in two-compartment plastic packages
CircuitMedic Part
Knife with #16 Blades
A must-have tool for precise cutting, scraping and trimming.
Microscope
Microscope
Precision microscope with stand and lighting for work and inspection.
Oven
Oven
General purpose oven for drying, baking and curing epoxies.
Wipes
Wipes
Nonabrasive, low-linting wipes for cleanup.
Images and Figures
2.6.3 Legend Marking, Stencil Method
Damaged Legend
2.6.3 Legend Marking, Stencil Method
Figure 1: Replace legend using a stencil.
2.6.3 Legend Marking, Stencil Method
Figure 2: Completed legend repair.

Procedure
  1. Clean the area.
  2. Scrape off any remaining character or legend with a knife and clean the area.

    Caution
    Abrasion operations can generate electrostatic charges.
  3. Select the appropriate stencil or have a special stencil made up. (See Figure 1)
  4. Mix the epoxy ink. White is the most common color. Spread a thin even coating of the epoxy ink on the ink plate or on a smooth surface.
  5. Position the stencil on the circuit board surface and hold in place firmly.
  6. Roll or brush the ink onto the stencil. Do not smudge characters or apply excess ink.
  7. Cure the epoxy ink per the manufacturer's instructions.
Evaluation
  1. Visual examination for proper characters, positioning and legibility.
Procedure for reference only.
 

Related Products

115-1322 Circuit Bond Kit
Kit containing packages of clear, low viscosity, superior strength epoxy for circuit board damage repair.
Color Agents
One part, air-drying, semi-paste ink for printing on hard surfaces and used to tint the color of epoxy.
Questions / Comments?
Call 978-374-5000 or submit your questions, comments and requests using the form below.

Your Name


Your E-mail


Your Phone


Your Company


Your Country


Send us a file

Maximum file size 4 megabytes.

Questions/Comments



Customer Comments
"Thanks again for doing a GREAT JOB! Pass my thanks along to all involved."
L.S. Dayton, OH USA
Epoxy Packs Eliminate Measuring
Epoxy Packs Eliminate Measuring
This unique kit contains 10 packages of super strength epoxy, precisely measured out into two-compartment plastic packages.
Learn more ...
87 Repair/Rework Guides Free Online
87 Repair/Rework Guides Free Online
This free online guidebook, packed with detailed illustrations, will be helpful to anyone who needs to repair or rework circuit board assemblies.
Learn more ...
Keep This Plated-Hole Kit Handy
Keep This Plated-Hole Kit Handy
Plated holes in circuit boards are easily damaged. This kit includes all the tools and materials needed to repair damaged plated through holes.
Learn more ...
Are Your BGA Rework Techs Experts?
Are Your BGA Rework Techs Experts?
Can every operator handle your BGA rework equally well? In real life, in all but just a few situations, the answer is no. Why is this so?
Learn more ...
About Us | Base Board Repair | BGA Reballing | BGA Rework | Coating/Marking | Circuit Repair | Component Salvage | Conflict Minerals | Contact Us | Copyright/Disclaimer | Directions | ECO/Modification | Feature Articles | Frequent Questions | Gold Contacts | Inspection | Order Tracking | Newsletter | Plated Hole Repair | Prices, Terms, Delivery | Products | Privacy | REACH | RoHS | Services | SMT/BGA Repair | SMT/PTH Rework | Sitemap

Circuit Technology Center, Inc.
22 Parkridge Road
Haverhill, MA 01835 USA
Copyright © Circuit Technology Center, Inc.. All rights reserved.