Рет қаралды 529
Bought this JLH 1969 pre-amplifier board(USD 22.06) from Vacusg Store(www.aliexpress...)
The LED power indicator does not work. / 通电后电源指示LED不工作。
In the following video, I did further check. / 在下面这部视频中,我进行了进一步的检测:
• Power-on JLH 1969 pre-...