National Signal ER200 Changeable Message Panel Controller
Repair
Repair Price: $ 580.00
Purchase
CSL Part Number: 116638
Product Overview: The National Signal ER200 is a changeable message panel controller used to operate arrow signal boards and similar traffic control displays. It manages a 15-lamp arrow panel configuration, allowing operators to select and display different message patterns or directional arrows through button controls. The controller runs on 12VDC power and includes a display board with adjustable contrast, a main board with 5V regulation, and digital interface components including an 87C550 microcontroller and 82C55 peripheral interface chip. It is typically used in roadside work zone signage, traffic management systems, and construction site arrow boards.
Category: Arrow Signal Controls
Manufacturer: National Signal
Manufacturer Part Number: ER200
Also Known As(AKA): 2157302
Please include wiring diagrams when sending in.
Common Failures
Common issues with this product include control board concerns where the unit powers on but does not respond to button presses. Another reported problem is unresponsiveness to inputs, which may be related to control board function.
Repair Approach
Our evaluation process includes checking electrical components such as voltage regulators and digital activity. In some cases, repair complexity is increased due to limited available technical documentation. When a unit cannot be economically repaired, we contact the customer to discuss options, which may include return of the unit or quotation for additional evaluation services.
Testing & Quality
Our testing process includes powering the unit and verifying button functionality and display clarity. For units with screen visibility concerns, we may adjust the potentiometer on the right side of the unit as part of the evaluation. Units that do not meet operational standards during testing are reviewed with the customer, and we provide options such as return or quotation for further services.
Service and repair your broken National Signal part
We can repair your National Signal model ER200 in our facility. Let our skilled technicians get your National Signal back in operation quickly.
Step 1 - Click the green 'Repair Now' button above to add the part and then complete the RMA.
Step 2 - The RMA form will be sent to you via email. Print the RMA form and put it in a box with the item(s) for repair.
Step 3 - Ship or mail the box to the address listed on the RMA.
Once the user has seen at least one product this snippet will be visible.

