Hi my pyramid pb8 45x amp keeps jumping onto protect we compleatley disconnected pre outs no joy changed pre outs no joy removed no joy checked fuses earth live feed remote feer its not got wet and it has neva got hot its running 2 sony explodes has neva protetected its self befor if u have any suggestions please e-mail me asap much appreciated chris firstname.lastname@example.org
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You have possibly melted a couple of wires together along the radio circuit. Also the radio unit itself has 1 or more protection fuses actually inside the unit that have blown, usually at back of unit in little bay near the wire clusters.
Check your relays too, a blow out through jump starting can do all sorts of little burn-outs.
Normally jump starting doesn't involve disconnecting anything. You put the leads from a good battery onto the terminals of the bad battery and start the vehicle. I hope you didn't put the good battery on, start the vehicle and remove the battery with the engine still running and connect the old one? That is a recipe to cause electrical damage as the charge from the alternator has nowhere to dissipate its excess amps.
Usually the highest rated fuse is the main safety protect which is about 30amps.also on some systems there should be a ballast resistor.you may find there is a protection circuit which trips in this event which is somewhere other than the fuse box.if no joy then it sounds likely you have actually burned out a wire between the battery terminals and the fuse box.
In car audio always make sure that you are feeding your amplifier with the voltage that it requires, usually 12v to 14v (some amplifiers can do 12v to 18v). If you have a voltmeter, check your voltage reading if its reading 12v above, if it reads 11.9v below & just stays there & keeps on going down then your problem is with your voltage.
The possible causes of the protect light to turn on in a amplifier is:
1. low voltage - the amplifier is not running on its required voltage / is not getting enough voltage
2. thermal protect - too much heat, usually this occurs when an amplifier is in a tight space & the voltage keeps going down this will cause heat.
3. shortage - wire's are touching each other
4. poor ground - always make sure you ground your amplifier to your vehicles chasis
Hope this helps your concern. Have a blessed weekend.
The protect light is a notification that the amplifier has reached a set temperature and shuts the amp down till it cools off. Look for the thermosister on the heatsink and follow the circuitry back to the control chip. Once you get that fixed the amp should power up until it gets too hot and the protect circuit kicks in. I had one of these amps for a while and the circuit was very touchy. Regards, rcampsr
There is some way to change a protection (fuse?). No. The fuse usually was not broken. How long did your amp turn on? 3 seconds (DC protect) OR immediately shut down (Over Current protect)? How to confirm? 1.Unplug the amp. 2.Remove the metal cover. 3.You will see a long vertically installed pre-amp board mounted next to those large power transistors fixed by 12 screws on a large aluminium heat sink. 4.Remove this long vertically installed board mounted by 2 screws. 5.With 2 screws removed, just pulling this board out and hold it with one hand. 6.Plug the amp and switch it on. 7.If your amp stays ON forever, the problem is from this long board. 8.If switch off at once, the problem is from power amp board. Try the above- mentioned steps. I will tell you what to do next. Just search you tube for SR600 cap replacement. I have written an email here. Write an email to me if you want to fix this amp.
Sounds like there could be a short somewhere. Check to make sure that there aren't any (exposed/bare) wires touching each other or if there is a bare spot of wire touching something metal. Check both ends of all the wires. A speaker wire may have come lose and is shorting out against the frame or some other place. Usually if it goes straight into protection mode or you're popping fuses you have a short somewhere. I assume the capacitor you installed is somewhere on the power line, which would be for helping with noise. You can also try disconnecting your amp from your stereo and see what happens but leave the speakers connected, you don't want to run the amp with out a load on it (the speakers). If your amp doesn't go into protection mode when the stereo is disconnected, then you have a problem with the stereo and not the amp, assuming you already checked for any possible shorts first.