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Infotainment - speaker issue

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widu13

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Apr 8, 2024
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2021 R18 TC
I switched on the bike yesterday and heard a loud "pop". The rear bag speakers (both of them) are now giving out a high pitched hum. Front and top case speakers are not affected. There is no radio or music shown on the infotainment - they are greyed out. Can't be a fuse otherwise the speakers would be dead. Motoscan doesn't do the audio side but otherwise there are no faults showing.

Any ideas?
 
I switched on the bike yesterday and heard a loud "pop". The rear bag speakers (both of them) are now giving out a high pitched hum. Front and top case speakers are not affected. There is no radio or music shown on the infotainment - they are greyed out. Can't be a fuse otherwise the speakers would be dead. Motoscan doesn't do the audio side but otherwise there are no faults showing.

Any ideas?
Did you check the fuse for the Amplifier, I think it is located under the seat? Maybe the hummn is due to no power to the amp because of a blown fuse?

Have you done any upgrades or work on the bike that required disconnecting the rear speakers and such?
 
Did you check the fuse for the Amplifier, I think it is located under the seat? Maybe the hummn is due to no power to the amp because of a blown fuse?

Have you done any upgrades or work on the bike that required disconnecting the rear speakers and such?

No nothing has been done to it at all. Would the amp fuse cause it to hum do you think? I was thinking amp but reasoned to myself that had the fuse gone it wouldn't make any noise at all?
 
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Well done SS, I feel a bit silly!

It was indeed a fuse but it was the 15A radio fuse (next to the main fuse) under the right side cover that had gone, so the Amp was looking for the radio input, so the Amp which is on a separate circuit is still live and produces it's own feedback due to the loss of signal.

The only reason that I can think of to cause this is that the fuse location (and the fuse itself) suffers badly with road spray/dirt and the fuse was suffering with corrosion. I cleaned up the fuse holder and replaced the fuse and all is now good.

I will look at some way to weatherproof the fuse holders to prevent this happening again.
 
Last edited:
Well done SS, I feel a bit silly!

It was indeed a fuse but it was the 15A radio fuse (next to the main fuse) under the right side cover that had gone, so the Amp was looking for the radio input, so the Amp which is on a separate circuit is still live and produces it's own feedback due to the loss of signal.

The only reason that I can think of to cause this is that the fuse location (and the fuse itself) suffers badly with road spray/dirt and the fuse was suffering with corrosion. I cleaned up the fuse holder and replaced the fuse and all is now good.

I will look at some way to weatherproof the fuse holders to prevent this happening again.
Ohms Law... Corrosion probably caused a voltage drop due to poor conductivity, causing amperage to go up, which probably was the root cause of the blown fuse.

Nice job..!!
 
Ohms Law... Corrosion probably caused a voltage drop due to poor conductivity, causing amperage to go up, which probably was the root cause of the blown fuse.

Nice job..!!
ACF50 to the rescue. I may resort to the H-D "weatherproofing" solution- wrapping a nylon bag aound them like my FP3 had on my Sport Glide.

A note for everyone else - the corrosion in the fuseholders I would class as significant. A bit of time taken with some emery cloth and ACF50 would be a good investment.
 
Well done SS, I feel a bit silly!

It was indeed a fuse but it was the 15A radio fuse (next to the main fuse) under the right side cover that had gone, so the Amp was looking for the radio input, so the Amp which is on a separate circuit is still live and produces it's own feedback due to the loss of signal.

The only reason that I can think of to cause this is that the fuse location (and the fuse itself) suffers badly with road spray/dirt and the fuse was suffering with corrosion. I cleaned up the fuse holder and replaced the fuse and all is now good.

I will look at some way to weatherproof the fuse holders to prevent this happening again.
Glad you guys sorted this out. In terms of waterproofing I use ACF-50. Not only displaces water but also neutralises salt and it is safe on electronics. I use this all over the place to be honest and I am a huge fan of it. It was designed mainly to protect airplanes on carriers from corrosion and if it is good for a multimillion aircraft, it is also good for my bike, boat, car, tools, etc.
Not sure why the engineers designed the fuse mounting location on such an exposed area. One can see the fuses without removing the side panel. It is crazy.
 
If you have a small sprayer on an air compressor using ACF50 that way is next level - much easier and quicker, it gets to the bits you can't normally reach.
 
Yup. I have seen that on YouTube. I don’t have an air compressor so I bought the aerosol can from my local Suzuki dealer, which is the one I use on hard to reach places, and I also bought online the 1ltr bottle with the small unpressurised dispenser for accessible areas and surfaces.
 
Saw a blue (I think) Bagger steaming north by Chelmsford yesterday bud. Looked nice.
 
Oh wow. I am yet to see another R18 of any variant tbh.
I went yesterday to the Bike Shed in London with one of my buddies for a coffee and a bite to eat and on the way out we got talking to a group of guys who participated in the DGR yesterday and were heading back home to South End, so we rode together through London to pick up the A13 to South End and I just left the pack on the A13/M25 junction. They told me they have not seen an R18 in the flesh, mine was the first one. Part of me feels a bit down that there are no more R18s around but then, the other part of me thinks I am riding something fairly unique and it is highly unlikely a clone will pass by or stop at the same traffic light, so I then feel happier again. 🤣🤣🤣
 
ACF50 to the rescue. I may resort to the H-D "weatherproofing" solution- wrapping a nylon bag aound them like my FP3 had on my Sport Glide.

A note for everyone else - the corrosion in the fuseholders I would class as significant. A bit of time taken with some emery cloth and ACF50 would be a good investment.
Maybe get some conductive No Ox and dip the spade type contacts of the fuse in it, and then re-install it back in the fuse holder.

I agree, I thought the fuse location, overall design and orientation was poorly executed on the R18 B; especially, when compared to the other high quality attributes of the R18...
 
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