Assembled the board.. having checked all the parts beforehand.. put 15 ohms in place of 75 ohms... turned it on... 22.4 volts at the output of the filter capacitors, 22.4 volts at the board output, not adjustable. Output LEDs light up, diodes near the filter capacitors do not light up, the BD140 transistor heats up, checked all the parts for correct soldering, everything seems to be correct.. where could I have made a mistake
low noise Pre-Amp / DAC power supply MJE15034 TL072 Regulator based on STUDER 900
- Thread starter yoshisoakland
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