My boat has a sony stereo and matched amp. The amp is suppying the power to the rear speakers only. The stereo and amp work fine while listening to the radio, however when I put a cd in, the amp after about two seconds goes into protect mode. This only happens with cd playback.
MrLard, thanks for responding. I resolved the problem by disconnecting the blue feed from the stereo to the amp and wired the blue feed from the amp to a direct power source. Not sure of the technical reason as to why this worked but it did.
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Stereo sytems have a protection circuit that alerts you by displaying "protect" when there is a electrical short circuit detected in the system, the most common short happens in a speaker, try disconnectig the speaker wires of both speakers(all speakers) at the back of the system, then play the CD or cassette player(although you will not hear anything with the speakers disconnected) and see if the unit goes into "protect" mode if the problem is still present then you have an internal short circuit and the system will need to be sent in for service or replaced(depending on age,repair costs). I would not recommend investing more than $80 into repairs. Now, if the unit does not go into "protect mode" then one of the speakers or speaker wires is shorted,be sure you check the conndition of the speaker wires before you replace the speakers, then you can replace the speakers(in a pair) and you should be back up and listening! Good luck and Merry Christmas !
DOES THE RADIO PLAY? HERE ARE THE FACTORY WIRING COLORS FOR THE RADIO HARNESS, RECHECK YOUR WORK. IF U FIND NOTHING THEN IF THE RADIO PLAYS THE CD PLAYER IS DEFECTIVE, IT HAPPENS BELIEVE ME.
2001 Chrysler 300M Car Stereo Wiring Diagram Car Radio Battery Constant 12v+ Wire: Pink Car Radio Accessory Switched 12v+ Wire: Red/White Car Radio Ground Wire: Chassis or Strap Car Radio Illumination Wire: N/A Car Stereo Dimmer Wire: Orange Car Stereo Antenna Trigger Wire: Orange/Red Car Stereo Cell Phone Mute Wire: N/A Car Stereo Amp Trigger Wire: N/A Car Stereo Amplifier Location: Located under the rear deck in the trunk. Car Audio Front Speakers Size: N/A Car Audio Front Speakers Location: N/A Left Front Speaker Positive Wire (+): Dark Green Left Front Speaker Negative Wire (-): Brown/Red Right Front Speaker Positive Wire (+): Violet Right Front Speaker Negative Wire (-): Dark Blue/Red Car Audio Rear Speakers Size: N/A Car Audio Rear Speakers Location: N/A Left Rear Speaker Positive Wire (+): Brown/Yellow Left Rear Speaker Negative Wire (-): Brown/Light Blue Right Rear Speaker Positive Wire (+): Dark Blue/White Right Rear Speaker Negative Wire (-): Dark Blue/Orange
If the amp goes into "protect mode" immediately upon power up, it's most likely a short in the power/ground or speaker connections. If it operates normally for awhile and then goes into protect, it's most likely overheating.
In the first case, I'd suspect something in the wiring. Go here to troubleshoot the possible causes.
An amp will most often go into protection from overheating due to being operated at too low of an impedance load. Check the speaker specifications and wiring and make sure that the final impedance load matches the amps rating.
YES!! You used the blue wire to turn on factory amp (blue wire to GM pink) you NEED to use the Blue/White wire. That is the amp turn on. The blue wire goes dead when you play a CD or DVD because it's for a power antenna. So, Blue/White ok?
the amp is going into protect mode due to something wrong in the amp or some thing in the wiring to it ooh yea if you are getting 18v power to the amp that is way to high it should not be higher then 15v if the amp is in protect mode it will not play at all.
i have alpine stereo's in all my vehicles and i have had this problem. if you run a 10-14 gauge constant wire from the stereo directly to the battery the stereo will not shut down in protection mode. it is not the cd it is the stereo going into protection mode because of lack of current not voltage. i hope this helps after i did this i could play the stereo as loud as it can go until my battery died
'Protected' usually appears on amps or combined cd/amp units when the main processor detects a short circuit in the speaker connections and the unit goes into 'protect' mode to stop further damage.Check the speaker connections. You may then need to reset the unit by holding the power switch in for a few seconds while powering on the mains cord for example. Sony A/V amps are notorious for this issue.
Assuming that the four speakers are connected to the amplifier, then the amp is the most likely problem component. Does the amplifier show a power light when the system is turned on? Note that there is probably another fuse in the amplifier power wire, near the battery.