2000 Legacy: Radio stays on after engine shut off

[Nicolas Dore]

Hello

The radio in my Legacy 2000 stays on for a few seconds after the
engine is shut off, even after the key is removed. I installed the
radio, a Blaupunkt w/CD I already had, back in June using a wiring
harness bought at a local auto radio shop but only noticed this a few
weeks ago.

As anyone seen this?

Thanks in advance.

Nicolas

 

[RWM]

Big caps in power supply draining?

 

[Edward Hayes]

I agree with RWM. Storage capacitors in the power supply need to bleed down.
eddie

 

[Nicolas Dore]

Big caps in power supply draining?

Hum... Could you reword that?

Nicolas

 

[RWM]

After turning off the ignition key, removing battery/alternator
power, large storage capacitors in the Blau's power supply may be
leaking back, powering the radio until discharged.

 

[Nicolas Dore]

After turning off the ignition key, removing battery/alternator
power, large storage capacitors in the Blau's power supply may be
leaking back, powering the radio until discharged.

Ok, makes sense...

Thanks a lot for the answers, RWM and Edward.

nicolas

 

[Ralph E Lindberg]

Hello

The radio in my Legacy 2000 stays on for a few seconds after the
engine is shut off, even after the key is removed. I installed the
radio, a Blaupunkt w/CD I already had, back in June using a wiring
harness bought at a local auto radio shop but only noticed this a few
weeks ago.

I recently was driving a new company care (a 2003 GM) and noted that
the radio in it did not turn off for about 5 (?) minutes after I turned
off the key, it would also not stay on for more then 30 (?) minutes with
the engine off. Maybe your's has a similar setup

--

 

[Nicolas Dore]

Just to conclude, I did a few tests today: The radio shuts off right
away if the wipers are in use, if the seat heater is in use, or if
something is plugged in the lighter. It had not happened before
because I kept an iPod power adaptor plugged in the lighter all the
time, which I started to unplug when unused a few weeks ago...

Thanks to all who provided info.

Nicolas

P.s. Wonder why the factory radio doesn't do that...

 

[someone]

P.s. Wonder why the factory radio doesn't do that...

My guess would be that the aftermarket radio has a capacitor (sp?) built
into it that stores enough energy for the few extra seconds of play.....

 

[Edward Hayes]

Usually a higher power radio has larger electrolytic capacitors for
increased power output. eddie