P.S- Do you know of any your friends who would benefit from this content that you are reading now? If so, forward this website to your friends or you can invite your friends to subscribe to my newsletter for free in this Link. Please give a support by clicking on the social buttons below. This article was prepared for you by Yogesh Panchal who works as a Computer Hardware Engineer in Mumbai India. My nephew was so happy and I can’t describe in words about his expression. I found the 1000uf 25 volt e-cap bad and this is the reason why it causes the humming sound.Īfter replacing the capacitor I powered “ON” the Keyboard and tested it for ½ an hour. pin number 2-3 and 5-6) so I have started with big capacitor which is connected to pin no 4 and 8 which is supply voltage to IC. So I have downloaded IC data from the internet for reference for IC BA 5417 and I have decided to test the capacitors which are directly grounded from IC (Because I am getting Humming from both the speakers if you get humming from only one speaker then test respected output pins i.e. I have removed the PCB there are very few components on this section. Press the button a second time to turn the sync start function off. On visualize inspection everything looks ok. When sync start is on, the bass and chord accompaniment included in a style will start playing as soon as you play a note to left of the keyboard split point. Please take some time to share the love and respond to the question of a fellow visitor if you can. There are many questions below that need answers. This type of Humming sound problem are most likely due to either earthing problem or due to some faulty capacitors hence I decide to directly check the amplifier section. I have added a new Yamaha PSR keyboards Questions and Answers page since this one had gotten so long.
Hence we opened the keyboard for inspection. On testing I observed the humming sound coming from both the speakers and it kept gradually increasing. My nephew called me to check on his Yamaha Keyboard with the problem of humming sound. Music rest, for PSR-77 (Part 1788) View details for this product: Music rest, for PSR-78/79/E203 (Part 3980) View details for this product: Music rest, for PSR-273/275/D1 (Part 3765) View details for this product: Music rest, for PSR-300 (Part 1800) View details for this product: Music rest, for PSR-340/350/540/550 (Part 4281) View details. Keep an eye out for promotions and deals, so you get a big saving of keyboard.