Hi,
I have a Primare A30.5 power amplifier and last week the fuse at the power inlet blow. After replacing the fuse I noticed a humming sound from the amp itself and after putting it back into my system I can hear the humming sound over my speakers when putting my ear close to it. I cannot tell for sure if the amp itself has never hummed before but I can now hear it from over a 1m distance, but I can tell for sure I never had this humming sound from my speakers.
The only thing that changed in my system is the fuse which is now a ceramic type instead of a glass type.
My system uses one power outlet via a surge protector with all grounded cable leads. The volume does not change the loudness of the humming. The amp itself is humming but does not transfer the humming to the speaker without a connection to the preamp. When I connect the center interconnect to the the pre amp the humming is comming from the center channel, the same for the other channels, and the humming is consistent in all channels when everything is hooked up.
The fuse at the power inlet was blown but the fuses for all the induvidual channels are still intact. Can someone give me an idea about what I am looking at, and if this is an easy fix?
The amp is 4 years old and out of warrenty.
Thank you for your help, and a merry Christmas to you all.
I have a Primare A30.5 power amplifier and last week the fuse at the power inlet blow. After replacing the fuse I noticed a humming sound from the amp itself and after putting it back into my system I can hear the humming sound over my speakers when putting my ear close to it. I cannot tell for sure if the amp itself has never hummed before but I can now hear it from over a 1m distance, but I can tell for sure I never had this humming sound from my speakers.
The only thing that changed in my system is the fuse which is now a ceramic type instead of a glass type.
My system uses one power outlet via a surge protector with all grounded cable leads. The volume does not change the loudness of the humming. The amp itself is humming but does not transfer the humming to the speaker without a connection to the preamp. When I connect the center interconnect to the the pre amp the humming is comming from the center channel, the same for the other channels, and the humming is consistent in all channels when everything is hooked up.
The fuse at the power inlet was blown but the fuses for all the induvidual channels are still intact. Can someone give me an idea about what I am looking at, and if this is an easy fix?
The amp is 4 years old and out of warrenty.
Thank you for your help, and a merry Christmas to you all.
You probably smoked Bridge rectifier or filter capacitor/capacitors but can be only a bad rca cable
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It probably is not the last option since 5 different channel interconnects all produce the same result. Are the first problems you mentioned something that can harm my equipment when I use the amp untill I can find a repair shop?
Thank you fir your response.
Thank you fir your response.
If the Bridge rectifier is smoked then You can Blow up filter capacitors because caps are electrolitic they have + and - with bridge rectifier burned than You will have AC power on Your filter capacitors and they can Blow up or explode.
From what source You are playing music?
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Hello JustM, is the humming coming from all speaker outputs, or only one ?.
Under what conditions did the mains fuse blow ?.
Dan.
Under what conditions did the mains fuse blow ?.
Dan.
The humming sound is comming from all 5 channels with the interconnects connected over the speakers. The build of this amp is a fuse at the power inlet, a switch, a distribution board with 5 seperated fuses (intact) for the five independent transformers and amplifier modules.
The conditions for the blown fuse at the power inlet is unknown and no smoke, bang or burning smell has occurred.
It also seems to get less after using the amp for a while. I will have to try again tomorrow after the amp has cooled down.
The conditions for the blown fuse at the power inlet is unknown and no smoke, bang or burning smell has occurred.
It also seems to get less after using the amp for a while. I will have to try again tomorrow after the amp has cooled down.
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