只花一個幾毫, 多重保護,免重蹈覆轍。
"Of course, as with any IC regulator, exceeding
the maximum input to output voltage differential
causes the internal transistors to break down and none of
the protection circuitry is functional."
你申報 "無焊錯的~" and "check 過晒各電壓左右一樣",我無話可說了。
a. 試下交換左右HVDC供應線路 (e.g. green lines as shown),睇下邊邊拆聲。
b. 仍是右邊拆,即檢查裝配工藝的隱性短路。(i.e. improper workmanship, blue zone)
c. 交換hvdc后右邊唔拆左邊拆,即檢查hvdc 線路 (ie. brown zone)。C11發過高燒 ,佢處女膜可能裂了,甚或傷了R7, R8,均宜換新parts。
希望你早日整好架機。
why u 調轉兩條driver board出300b 既線。?? what purpose ?
姐係300b 聲道不變。<< 究竟點樣及調轉邊條線? mark your schematic to clarify.
( 調轉兩條driver board出300b 既線, 係會調轉左右聲道果喎, why u said "姐係300b 聲道不變"呢?<--- 令我好confuse 呀!