Bruiseobu's Blog
Like to tear apart broken stuff and try to fix it as possible.
Friday, March 15, 2024
Honeywell 801 空氣清淨機 不開機/閃動
症狀 開機鍵按下去,燈號一直閃,風扇帶不起來
查了一圈發現是整流後給pwm ic的VCC,因為濾波電容(22uF 200v)壞了而不穩一直跳動
換上省電燈泡拆下的良品...
記錄一下pwm的波形
壞掉的電容測出來只剩10uF
結論...買一個準確LCR Meter的重要性?!
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