Maximizing equipment utilization is important to maintain productivity and cost competitiveness in high-tech production. Overall Equipment Effectiveness (OEE) is a well known parameter to evaluate equipment performance effectively. However, existing studies focuses on determining OEE instead of presenting structured, evidence-based strategies for improvement. Moreover, there is limited research showing how specific Total Productive Maintenance (TPM) pillars directly influence the OEE components within automated & process-heavy industries. This study assesses OEE performance in a selected high-tech production facility and applies some targeted TPM actions to resolve the identified losses. A systematic methodology was adopted, comprising process-level data collection, OEE computation, Six Big Losses analysis, TPM deployment, and post-implementation evaluation. Primary analysis revealed low availability and performance across vital processes, resulting in OEE values between 63% and 75%, which fall below the 85% standard. Through analysis, loss patterns, Autonomous Maintenance, Planned Maintenance, and Focused Improvement were implemented to reduce breakdowns, stabilize cycle times, and eliminate minor stoppages. Post-implementation results show clear improvements which confirms that organized TPM deployment reduces unplanned downtime and improves operational stability. This research provides practical, data-based evidence on how effective TPM is at improving OEE. It also offers a framework that can be used for ongoing equipment performance improvement in high-tech manufacturing.