Two weeks ago a friend give me for my daughter a digital piano. It is a Grandtone DPS-330. When you turn on the piano it does the check and turns on the LED lights but no sound comes out of it neither through the speakers nor through the sound outputs nor through the headphones. Additionally I tested the midi output and only the twelve keys in the center give a signal. Doing tests inserting and removing the headphones from the sound outlet for two or three seconds, sound came out of the speakers with a lot of background sound but only from the middle keys (the 12 midi out ones). After some research I finded out that is a rebranded Dynatone DPS-330. I wrote to the Korean site and they sent me the service and use manual of the piano (I send attached). When I opened the piano i saw the piano has been tried to fix and there are three capacitors replaced and there is a leakage arround Q505 and C526 look like mising. I asked my friend and he told me that they replaced the Q505 but that did not fixed teh problem so the leave it as it is and gave to me (i send pictures attached).
What do you think is there any chance to fix it, i just keep the cabinet and the pedals, i am newbie to electronics but i have iron, multimeter, time and no money for buying a new piano for my daughther. Any help would be appreciated.
Thank you very much in advance and sorry for my english (is not my mother tongue).
What do you think is there any chance to fix it, i just keep the cabinet and the pedals, i am newbie to electronics but i have iron, multimeter, time and no money for buying a new piano for my daughther. Any help would be appreciated.
Thank you very much in advance and sorry for my english (is not my mother tongue).
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