ediaval

Hi, my unit is doing the same. Bluetooth light flashing rapidly in blue. Unit is totally irresponsible. I have tried unplugging, reset with 2 buttons, conecting USB cable to lighting in my iphone, rca with analogic source and still a heavy brick of 2 k€. No service in Europe. I know something about electronics but I can't understand how using a smart plug or UPS, it can work. If this happens is because there is a power supply issue, but smart plugs do not modify the current wave, frecuency, etc. They just have a RELE and go on/off. The unit works with DC and internal power supply justs converts 220 AC (110 in US) into lower DC current. I have considered a possible issue with power supply. Somekind of problem with power transistor or diode bridge not producing proper tension to the mother board and pre-amp. But before opening the unit I would like to check other reasons. Anyone who could solve this problem with a technical response or repair? Thank you all in advance for your feedback and suppor