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CSL Part Number: 83383
Product Overview: A three-line variable message sign control system used in portable traffic management and roadside display trailers. It drives LED pixel display panels, supports NTCIP protocol and remote cellular access via an RV50 modem with GPS, and runs on solar- and AC-charged battery power.
Category: Arrow Signal Controls
Manufacturer: Wanco
Manufacturer Synonyms: WECO
Manufacturer Part Number: WTMMB-SLL
Control System Labs can repair your control box and do your 3G to 4G conversion upgrades.
Common Failures
Several failures were identified in the variable message board (VMS) units. Common issues included outdated modems incompatible with current cellular networks, physical panel damage, battery charging problems, and non-functional displays. Specifically, unsupported 3G modems required upgrading to remain operational with 4G/5G networks. Other hardware-related problems included failing fans in AC battery chargers causing overheating, detached displays due to sheared mounts, and improper gasketing.
Repair Approach
Repairs involved replacement and upgrading of critical components. For connectivity issues, the outdated modem and antennas were replaced, enabling remote access. Physical repairs involved reattaching display boards and replacing damaged mounts. Electrical issues were addressed by repairing or replacing malfunctioning components, such as the fan in battery chargers and missing capacitors. Additionally, gasket issues were addressed using RTV silicon solutions.
Testing & Quality Assurance
Post-repair tests were performed to verify system functionality. Connectivity was verified by confirming remote access capabilities and the operation of cellular and GPS functions. Battery systems were tested over prolonged periods to verify they held a charge and discharged correctly. Solar chargers were also evaluated for charging performance under varied weather conditions. Overall, the quality assurance process verified that the repairs restored functionality to the VMS units.
Service and repair your broken Wanco part
We can repair your Wanco model WTMMB-SLL in our facility. Let our skilled technicians get your Wanco 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.
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