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you used 2N3904 NPN Transistor and 2N3906 PNP Transistor.Can I use BC547 and BC558, because i have such a lot at home?
No way, I'm planing to build my own 555 Timer with transisors, and now, i see that I'm not the only one who is trying to do this.
i had exactly the same....it worked, and suddently the fault LED lights up. Now When i turn on the powersupply, the fault LED lights and turnd down. Thats all what it does anymore. I tried to repair it, but you dont really find a circuit diagram, so i decided to by a new one.