Hi, I just installed an Alpine CDA 9855 into my car and works fine, but after a few minutos, less than 3, into CD mode, the radio turn off. A few seconds later turns on again.
Seems the thermal proteccion was activated in some way but I don't understand why.
I connected the blue/white wire to the amp power so that would not be the problem...
When you say you connected the blue and white wire to the amp power do you mean the remote turn on of the amp and not the terminal/wire marked battery or power? You should not be trying to power your amp with the blue and white wire. This wire is only for sending a signal(+12V) to the amp to turn itself on. the amp should have it own fused wire of appropriate gauge running directly to the batttery.
Some more details on the installation would be helpful.
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Are you running your rear speaker through an amplifier? If so, you are probably using the blue wire (power antenna remote turn on) instead of the blue/white wire (amp remote turn on). The blue wire turns off when leaving tuner mode, thus turning off the amplifier.
it sounds like you have the blue wire (antenna remote turn on) instead of the blue/white wire (amplifier remote turn on) turning on an external amplifier in your rover. the antenna remote wire turns off when you leave tuner mode.
had the same problem with my alpine, i was able to fix it once by,
popping off the face plate and with fine grit sand paper (lightly) sand
the connection points on
the radio and the face plate, then put a little bit of dialectic grease
on it . also doing a reset on the unit helped me from time to time...
1. Go to menu
2. Using touchbar go to 2nd function
3. Using touchbar choose a preset colour or tap P1 at the end on the touchbar and use the volume round thingy to choose your own colour by turning the volume knob.
Chips fail, even for the best of us! If the preamp outputs are still fine, you can purchase a small 4 channel from Alpine for 100-150. About the same as a repair yet cleaner power. Check EBAY there's always good deals to be had!
Hope this helps
There is an option in the unit itself to turn off the internal amplifier. If you push the 'menu' button, then go to the setup/settings menu, and then i believe it was under the 'general settings' tab. there's a option called INT IC or something. Make sure that is turned on.