Electronics - Printed Circuit Boards

AES provides complete printed circuit board services including….

• Component-level testing and repair
• Retrofits
• Modifications
• Remanufacture
• Ultrasonic cleaning
• Component replacement
• Through hole, surface mount, BGA
• Prototype
• Manufacturing

The Testing and Repair Process:

Cleaning - All items are cleaned extensively. We use ultrasonic cleaning, pressure washing when safe, and low-pressure chemical application. Our conformal coating removal process utilizes several methods and chemicals to remove dirty and contaminated conformal coatings.

Physical Damage Analysis and Repair - Circuit boards and components that are burned, damaged or broken are sent to our re-work specialists. This group can repair holes, burn marks, trace damage and other defects in the actual circuit board. Loose, damaged or missing hardware is repaired and/or replaced.

Mechanical Damage Analysis and Repair - We fabricate or rework any mechanical parts if necessary. This may include bearing replacement, housings, enclosures, etc....

Static Testing - This step checks for faults that exist in the "power-off state". Sometimes problems are apparent only when power is not applied to the unit. Our technicians check for components, such as resistance and capacitance values, that are out of tolerance. The use of signature analysis equipment allows us to detect components that are weak and have been damaged but would otherwise seem operational.

Preventative Maintenance - We use information from our history reports to develop preventative maintenance procedures. The procedure is unique for every repair and specifies components for replacement that have proven to be common failures. Steps taken include: replacement of aging electrolytic capacitors, factory recommended upgrades using newer, more efficient components in place of originals, software upgrades, etc....

Automated Flying Probe Testing - Four independently moving topside probes
Two adjustable bottom side probes
Ability to perform 4-wire Kelvin measurements
Capable of applying 4 guard points per step
Test speeds of up to .03 seconds per step

Bench Level Testing - Each item is placed in the operational state on a qualified technician's bench. All power supplies are applied and inputs are triggered. Using numerous test instruments, the technician analyzes the item in depth at this time.

Full Function Testing - Using computer-based Automatic Test Equipment, we do a full functional test on each individual part possible. This test runs a "power-on routine" on the components, applying every possible configuration of inputs and monitoring for the correct outputs. Some components are damaged in ways that still allow the control to operate but can eventually cause other problems. This extensive measure of testing assures a higher quality of repairs.

Simulation or Rack Test - If possible, each item is placed in a simulation run mode to ensure proper operation once installed back into the customer's equipment.

OEM Certified Testing - Using the original manufactures' equipment, the unit is installed and fully tested in the end product to confirm proper operation.

Conformal or Protective Coating Application - Depending on the type of control, a protective coating may be applied to the surface. This protects against moisture, corrosion, dirt and other foreign debris that could be harmful to the unit.