Nguyên nhân và cách khắc phục đèn LED bị nhấp nháy

Sau một thời gian sử dụng, chúng ta thường thấy đèn LED bị chớp tắt có khi nháy nhanh như đèn vũ trường mà cũng có khi tắt khoảng 30 giây sau sáng lại được ít phút lại tắt. Các lỗi trên thường Chip LED không hư mà do hư bộ nguồn – Nguyên nhân bộ nguồn đã được thiết kế lỗi, giá rẻ để cạnh tranh nên linh kiện chất lượng kém đặt biệt là phần tụ điện

Một số trường hợp Chip LED không hư mà hư bộ nguồn

Nguyên nhân bộ nguồn hư vì một trong các trường hợp sau:

  • Bộ nguồn giá rẻ – linh kiện kém chất lượng tuổi thọ giảm nhanh dẫn đến sai số linh kiện tăng
  • Tản nhiệt của đèn không tốt làm bộ nguồn nóng dẫn đến tụ hóa phù, các linh kiện khác hư theo
  • Hay các linh kiện bán dẩn hư do nóng

bộ nguồn đèn led

Chip LED bị hư – Thường là Chip COB

Nguyên nhân xuất phát từ keo tản nhiệt kém chất lượng bị khô sau 1 thời gian ngắn sử dụng, làm phần giải nhiệt không tốt cho Chip LED, bị nóng và bị nứt  làm đứt 1 phần mạch song song dẫn đến dòng điện trên nguồn vào phần mạch còn lại gây nóng dẫn đến hiện tượng nhả mạch làm đèn chớp liên tục

Cách khắc phục

  • Trường hợp nguồn hư: Kiểm tra hư nhẹ thay tụ – Nếu hư nhiều thay nguồn – Nên mua bộ nguồn uy tín, chất lượng và có giá thành cao
  • Trường hợp Chip LED hư: Thay Chip LED

Qúy khách hàng có nhu cầu các loại đèn LED liên hệ với chúng tôi theo địa chỉ sau để được tư vấn chi tiết:

  • Hotline: 0911 400 770
  • Email: srigel.com.vn@gmail.com
  • Website: https://srigel.com.vn/
  • Địa chỉ: Số 526 – 528 Xô Viết Nghệ Tĩnh, P. 25, Q. Bình Thạnh

 

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