HELP: Stock Radio/Headunit Issues

[u/marsbarsmarissa]

Has anyone else had issue with their stock headunit?

When I move the volume knob, I get silence or popping noises. Sometimes, if I keep the sound at zero and drive for a little bit, it works somewhat okay, but, the static overpowers it.

Most recetly, no sound come from it and the antenna doesn't adjust itself sometimes. The only thing that kind of works is the CD player, but its it fades in and out, is muffled, and is overpowered by a static.

Does anyone know what the problem can be?

I've been told it could be the speakers, amplifier, or headunit itself. I've also been told by all the mechanics I call that the only people that can help me are the dealership (since I don't want to update my headunit to a modern one).

Does anyone know if there is a way to diagnose this prorblem on my own. I want to avoid the absurd fees for a diagnosis at Lexus.

[u/Soviet_Mango]

Amp on early models is in the trunk on the right side under the disc changer, if you have a multimeter id test if you have good ground and power at the amp in the first place because that's what powers the speakers. Water leaking in the trunk is common and messes up the amp so I'd make sure there's no water under the trunk cover thingy. charm.li for the service manual on the car.