BG933174810
BG933174810 I had the same problem. It turned out the winding direction of the primary coil (L1) is important. In the promo picture of the device the winding is correct. In the instructions that are given below the product, the winding is incorrect. The winding of the primary coil, L1 (2-3 Turns), is critical in the sense that the direction of winding is important. Start from the L1 solder hole near the location of C2, the yellow ceramic capacitor and the two LEDs. Seen from the top of the secondary coil, L2, now wind L1 clockwise around the secondary, L2. If the transistors are mounted correctly, the machine should work now (even without audio). Success! BG933174810
2021-03-01 10:33:29 Hilfreich (0)
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