I have a sony amp. I was professionally installed. The amp works for a few minutes then it turns of. After a few minutes it starts working again. I ask the peolple that I had them installed the amp and they say it's the amp, because the wiring is good. I am thinking that the amp overheats and turns off, then once it cools down it starts to work again. What could be wrong with the amp? Is it something easy to fix or should I just buy a new amp?
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Re: sony XM-DS1300 amp
If they have bridged the outputs of the amp, be sure that the "ohms" load is 8 ohms. This would then apply a 4 ohm load to each of the output channels. It sounds like they have bridged the output or else hooked up the speakers in a paralled configuration that is trying to kill your amp. If you are using dual voice coil speakers then you have to treat each of the voice coils as a seperate 4 ohm speaker and wire accordingly. You need to correct this NOW or else you will fry your amp. Good luck.
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What ohm is your sub running at. Sounds like your runnig your amp to low an impedance causing it to thermally shut down, when it cools a bit it turns back on. Either that or you have wires crossed somewhere. Check your wiring and make sure the load of the speaker does not fall below the rcommended ohm of the amp. Usually 4ohms mono and 2ohms stereo
sounds to me like you are overheating the amp, try down tuning the peak level of the amp, and also if there is anything around the amp clear it away, check if the fan is turning on, you may need to replace it,
If you disconnect the speaker wires from the speaker terminals on the amp and the amp still goes into protect mode, the amp probably has shorted output transistors. If that's the case, the amp is probably not repairable. The outputs that Sony used were discontinued and there are no other transistors that will work properly (unless some of the newest transistors are compatible).
If it's under warranty, contact Sony. If it's out of warranty, contact one of the authorized Sony service centers to see if they can help. They may have a supply of NOS parts that would work.
If the fuse blows only after the remote voltage is applied, the output transistors have likely failed.
Never use a fuse larger than the one recommended by the manufacturer. It can lead to more extensive damage (including damage to the circuit board) which will make the amp much more expensive to repair.