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Device will not turn on
Regardless of charge device will not turn on
If this is your problem your most likely issue is the battery, make sure that the battery can still charge, if you plug in the device without the battery does it charge? If so the battery is issue. If you need to replace the battery follow the guide Marshall Kilburn Battery Replacement.
The underlying cause is likely an expired battery. Rechargeable batteries decay overtime, and slowly hold less capacity. In order to maintain the highest capacity it is recommended that you keep the speaker charged when not using it, and keep the speaker out of cold environments particularly, but extreme temperatures in general.
Battery will not charge
Often times this is because the battery is old and needs to be replaced. First make sure the battery is securely plugged into the speaker. If it is properly plugged in and it still wont charge the the underlying cause is likely an expired battery.
Bluetooth won’t connect
Either bluetooth is not found, or disconnects frequently
If your bluetooth is having trouble connecting to the device you are pairing your speaker with you can try a number of different things. First, be sure that your device and speaker are in range of each other, preferably close together, and free of any physical or electrical obstructions like walls or electrical appliances. Freeing your connection of electrical disturbances is important because many of your everyday kitchen appliances like microwaves and gas cookers use the same frequency range as this bluetooth device.
If this does not work, you should check to make sure your software is completely up-to-date. If your software is not, update your software and try to reconnect your speaker and device.
Bluetooth is not found
First make sure that your device has 4.0 or above bluetooth, you can find this information in the device page under settings on most devices. Next, turn off the bluetooth on your device and delete or forget the Marshall Speaker from the list of bluetooth devices saved on your device. Turn off your speaker and device off then turn them back on. Finally, re-pair your speaker with your device. If none of this works the underlying cause may be with the bluetooth piece
Bluetooth disconnects frequently
First charge your speaker and the device that you are trying to connect to the speaker. Turn the speaker back on and see if the speaker connects automatically. If it does and the problem persists try deleting the speaker from your bluetooth memory and trying again. If it doesn't connect automatically delete it from your bluetooth memory and try again. If both of these things don't work the underlying cause may be the bluetooth piece, or a short circuit in one of the wires connected to the bluetooth piece.
Speaker is making a popping sound
A clicking sound often heard on base hits or for high range sounds
If your speaker is making a popping sound you should check the following: First, check the battery power of your speaker and device to make sure they are not low. Next, check the volume knob on your speaker to be sure the volume is not too loud. If this does not solve your problem, check to be sure your speaker is not near any other devices that might be interfering with its signal.
Popping sound on base hit
If this is the problem the underlying cause is most likely the main speaker is loosening up from use, or going bad. It's possible that you could fix this just by tightening it but regardless of the problem you are going to have to open up the speaker and get in there. Follow the replacement guide for Marshall Kilburn Main Speaker Replacement
Popping sound with high notes
If this is the problem the underlying cause is most likely the tweeters are loosening up from use, or going bad. Its possible you could fix this just by tightening it but regardless of the problem you are going to have to open up the speaker and get in there. Follow the replacement guide for Marshall Kilburn Tweeters Replacement