I have a 93 LS400. The battery was changed recently and now the radio produces no sound. I am able to see the display, can change stations, switch from Radio to CD etc., but no sound. All suggestions welcome.

 

was it working fine before changing the battery?

 

check fuses first. then test speakers. last is to check the amp.

 

i had a sorta similar problem.. i tried to start my car and nothing happened, battery died, then i heard a pop. changed out the battery with a new one, and now my radio wont turn up past 1/4 way.... anything past 1/4 the highs and mids will cut out and i can only hear the woofer... my best guess is a blown resistor inside the head unit... sound system is pioneer, only amp is for the woofer, the door speakers is powered through the head unit. if u have nakamichi (sp?), all speakers are powered by external amps... maybe check fuses to the amps........?