Have you tried a different output cable? I know, it seems simple, but it's often the problem. If you have and the problem remains, I suggest calling the manufacturer to see if there is a known problem. Many manufacturers have a website & service number for resolving problems with their products.
Maybe plug in a set of headphones and pull them out again. It could be that the switch in that jack is stuck. And also check that the volumes for the different parts are not set to low. Maybe first check volume upper part and lower if you use split keyboard. I have a BK-3 myself which is playing very well since ...eh.. 2015 if I remember correctly. Greetings from Jeroen from the Netherlands
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SOURCE: no sound gpx klc8806dt
Hello, i have fixed a few of these units, Mainly the problem is, is the crappy design inside, take out all of the screws from the bottom of the unit, be careful when pulling the top cover off cause the battery unit on the side is detachable and could be stuck and u can rip the wires off the system board. now you will see the 2 speakers, take a razor blade and carefully cut away the glue that holds the speakers in, and there may be little white plates with 2 screws that hold the speaker down also. Now take the speakers out and test them on a home entertainment center or a cd player that has red and black connectors for speakers in the back. See if they work first, if they do carefully reconnect the speakers to the motherboard and reseat the connectors back in with ease. try the unit again. if it doesnt work check the solder joints where the connectors attach to the motherboard, sometimes they will come loose. From my expierence with these units is they tend to jam the speakers inside so tight that they eventually stop working, so be sure to only use the connectors to hold them in.
SOURCE: no sound from radio, display works, speakers work, wires correct
do you have an amp hooked up to your car stereo ?
SOURCE: My speakers stopped working. Cannot increase the
I fixed a similar problem I was having. It requires a little work.
Take out the four screws from under the broken speaker. Carefully
remove the cover, separating the speaker from the base. The two are
wired together so don't pull them apart with force. Then remove the
single screw, which is much larger the the previous four, and separate
the speaker from the top cover.
If you chose you can remove the wires from the speaker, they just snap on, but its not required.
What I found is the speaker issue is not with the wire or the power,
but the speaker it's self. On the back there is a big round metal
piece. On my speaker that piece was pushed towards the front of the
speaker. When I looked at the good speaker, that big piece was all the
way back. So I simply pulled it back and presto, instant fix!
I hope this works for you.
SOURCE: sound coming from speakers is very quite. must
check your manual for a quiet mode, or reset factory defaults. it might be stuck in "attenuator" mode, where sound is muffled, in case you're answering a phone.
Good luck!
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