1994 Ls400 Pioneer Radio/cd/cassette Player - Fm Only Working

[pacolet]

Both CD and FM worked up until recently, now when I push the 'CD Comp' button on the radio, it doesn't switch from FM to CD functions. Also the antenna doesn't retract as before. Any ideas for troubleshooting?

[Exhaustgases]

Its difficult to trouble shoot radio stuff since service info is sparse. I wonder if the radios suffer from the same capacitor issues the ecu does? It could be as simple as slight corrosion on the connectors.

[pacolet]

Anything is possible and with hundreds of connections I suppose...where to start? Nothing changes on the radio when I try to switch from FM to CD, the radio continues to play, antenna does not retract...

[pachanga]

I have a 1994 LS400 .. the Pioneer radio quit finally.. display was blacked out... finally would not turn on... I purchased a replacement Pioneer radio from a 1993 LS400 that was in a junk yard for $25. Took me 30 minutes to switch out the bad radio for the good one... You might think about checking junk yards in your area. Pull-A-Part is a good source as most cars are not "wrecks" but whole cars. Just need to sign up for the email update that Pull-A-Part will send you when they get a car in that you are after. That way you get to the car hopefully before all the good stuff is sold.