I have recently purchased and assembled this kit. Soldering is to ‘best practice’ all polarities of diode, LED, electrolytic capacitor observed and 555 IC inserted correctly in base holder. When switched on (in any of the 3 positions), the relays (wrongly called inverters in the manual!) activate briefly and the red LED stays on! At no point is the delay sequence activated i.e. 5 - 10 or 15 seconds. My question is there any known history of faulty components or if this is a known or previously encountered fault, what is it?
Appreciate any feedback or advice. Thanks
Most likely an assembly problem.
Sorry, this forum does not allow picture uploads
If you can provide LINKS (e.g. by using a free online picture base) to HI-RES and SHARP pics of your assembly (both solder- and component side)
then we can take a look and provide some feedback.