I just seldered K8072 DMX RELAY - LED D2 in manual is wrote “Flashes once at turn-on - allows you to chceck if the CPU is functioning” - but for me isnt flash once, dont flash never. I am sure, all is soldered ok, i check many times, i create lots of electronic modules - it is my job. This kit seems like NON programmed onechip IC. But i dont have invoice from it, i cannot make claim. Please, it is there any chance for take spare IC for this kit - or file with program for reprogramming? What i can do? Thx
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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.