427cobra

Hi, I have the same problem as some people on this forum but so far no one has been able to find a solution, so I am going to tray one more time.
When I hit a pothole the radio went silent, everything seems to work ok except no sound, if the radio is off and I turn the ignition on there is a scratching sound that comes from the speakers for 5 to 6 seconds, and if the radio is on and I turn the ignition on everything works for 5 to 6 seconds and then no sound, can someone help me on this.
Thanks

2002430SC

Sorry for your problem.
My radio is dead. if you press the power button nothing happens. Anyone else have this problem? 2002 430sc

bacardi11

iTrader: (1)

check the Amp.

ShawnOk

iTrader: (1)

You might try to check the wire harness behind the radio. Might have come loose. http://www.sound-repair.com/index.ph...-instructions/

427cobra

Did you check the fuses?

427cobra

The amp is working, as I mentioned in my first post I get sound for 5 to 6 seconds when I start the car.
Thanks

427cobra

I am checking all the wires from the radio, amp, and speakers.
Thanks

427cobra

From what I have learned so far there are two things that can cut the power to the speakers,
The Bluetooth and the GPS voice navigation, so I am disconnecting some wires to see if the radio will stay on after I start the car.
I will post the results.

Harold57

It could still be the amp. It has a bit of a history of overheating when it is dying. So maybe in your case it overheats really quick.

427cobra

Definitely not the amp I just finished replacing the amp and it is doing the exact same thing.
Something is cutting the power to the speakers; I’m still looking for the problem.

Teal Sc400

Your stock speakers have probably blown and were cheaply made as the Sc 300/400 models. I'll try and find/post the old thread I help for another member many years ago, for Sc430.

Here is a newer DIY thread on how to replace remove interior to get access to the speakers.
https://www.clublexus.com/forums/lex...all-sc430.html

427cobra

Thanks Teal SC400, but as I have mentioned in my first post the speakers are working, I get sound for 4 to 5 second after I turn the ignition on.

Teal Sc400

K....stock speakers seem to deteriorate due to sun/heat and were cheaply made on Sc 300/400.
other problems "if U have larger rims/lowered the Sc?" These effects will wear-out wires, under the wheel-well as many have experienced with r models 300/400.

bb430

iTrader: (1)

What year is your car? You mentioned Bluetooth and Nav voice these are 06 and up features, earlier models are not factory items.

mrblister

Blue tooth started in 2005 for the sc430 Gen 4