Roland jd990 repair

Fabiojdbrasil · November 28, 2022, 1:59pm

My name is Fabio, very nice to meet you, I live in Brazil, I have 2 jd990 and one of them in the last week when I turn it on, the sounds of the timbres do not come out anymore, it only comes out with a hiss in the headphone output and in the LeR outputs, what could have moved?

midnightvisions · November 30, 2022, 10:37am

have a look here,

Fabiojdbrasil · December 2, 2022, 1:12pm

Thanks a lot for the info buddy. In my case the problem was in the capacitor 3300 that leaked and in the voltage regulator of the motherboard 78L05 that was burned. I replaced these two components and then calibrated and the problem was solved. thank you very much for your attention.