Kenwood Amplifier A-5j Manual -

: If the unit fails to operate properly, look for a Reset button to return it to factory settings.

The A-5j typically supports two sets of speakers. Ensure you use high-quality copper wire and maintain correct polarity (Red to Red, Black to Black). Kenwood Amplifier A-5j Manual

The manual specifies grounding points. Ensure the turntable ground wire is attached to the screw marked "SIGNAL GND" shown on the rear panel diagram. Also, check the power supply capacitors (C901, C902) – the manual lists their values (often 12,000µF/50V) for easy replacement. : If the unit fails to operate properly,

Here’s an regarding the Kenwood Amplifier A-5J Manual : check the power supply capacitors (C901