JABB Posted April 13, 2020 Share Posted April 13, 2020 As the title says, headphones that works perfectly´doesn't work at all on my CTK-4400 Sound comes from speakers, regardless of whether the headphones are connected or not, without any sound in them at any time, neither fully connected nor slightly pulling them out. Is there a simple solution, or something is definitely broken? The keyboard is out of warranty. As my keyboard skills are still at the almost beginner level, I'd like to avoid the suffering to the ears of my family, while I am isolated in my room after testing positive on Covid-19, although always with mild symptoms, fortunately. Thanks in advance. Quote Link to comment Share on other sites More sharing options...
Brad Saucier Posted April 13, 2020 Share Posted April 13, 2020 Does the plug feel loose when connected? It sounds like something is definitely wrong in that area. Quote Link to comment Share on other sites More sharing options...
JABB Posted April 13, 2020 Author Share Posted April 13, 2020 Hi Brad, thanks for answering. Nope, the connector base in the keyboard seems firm when the plug is connected. Although I just registered with this username, I was actually a member for two years of this and other Casio forums and keyboards in general, but I forgot the username. Anyway, I remembered a similar case that did have a solution, although a bit tricky, but I can't find anything now. José Antonio Quote Link to comment Share on other sites More sharing options...
Brad Saucier Posted April 13, 2020 Share Posted April 13, 2020 Could it have involved cleaning the headphone socket with a cotton swab dipped in some alcohol? Quote Link to comment Share on other sites More sharing options...
IanB Posted April 13, 2020 Share Posted April 13, 2020 It's usually a mechanical switchover inside the jack socket, so that might have broken. Quote Link to comment Share on other sites More sharing options...
JABB Posted April 16, 2020 Author Share Posted April 16, 2020 Thanks Brad and Ian for your help. Brad, I did what you said, but if that were the problem, the speakers would be silent when headphones were connected, and in this case, they always sound, regardless if headphones are connected or not, so that didn't work, like I was afraid. And Ian, seems you're right and it's definitely a hardware issue, something that only opening the board could be fixed. Wold be easy to open the board myself to take a look? I would do it in some days, after isolation ends. To discard some weird software issue, I even did a reset to default settings, I didn't have any group of settings saved and in fact, I wanted to get rid off of some changes that didn't know how to revert, but the problem with the headphones remains. Thanks again. Quote Link to comment Share on other sites More sharing options...
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