ZEROZONE одна пара KSA50 krell50 усилитель мощности

ZEROZONE One pair of KSA50 KRELL50 Hifi PCB Power Amplifier (2 channel and only PCB) One pair of KSA50 KRELL50hifi power PCB amplifier (including 2 channel and only PCB) Each PCB size: 180 * 90mM, thick 2mm Debugging instructions: 1: after soldering all components and installed with a heat sink. Check if it has any error carefully. 2: Transformer primary series one about 50W bulb (this protects The board if it has error) 3: adjust R105 to get voltage - - - GND closed 0MV4: adjust R126 to voltage " V1 " on R201 (R201.202.203 or 204 was fine). Я = V1 / R201. обычно " и " вокруг 600ma-1000mA. Everything will be ok. 5: Repeat Step 3.6: After turning on the power about 50 minutes, Repeat step3. step4.Step4. After turning on the power for about 2 hours. Repeat step3. step4.Step4 снова.