Hi I am having a problem with the kit K8044 ten channel light effect generator.
The problem is s follows; On completion .>ld1< was very dim and the board would not reset to any effects or off and on at start up it will flash all the 9 other channels and operate relays, increasing in speed on the variable control. i have replaced the led BUT now it doesnt light at all I and I have no access to any of the effects. I am contemplating repalacing parts BC640 and bc547b on channel one. Any help would be gratefuly recieved.
Most likely one ore more assembly errors.
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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.
Did you mount a jumper to select the number of channels used?
Thank you for your prompt reply. I dont think it is consrtuction error as I use an overhead maginfier to assemble all my work plus i now have a usb micro scope to get even closer in to the joints, all are ok. One thing that keeps coming back is you say have iselected a jumper, this could be my fault as i have inserted ALL the jumpers. Do I have to remove 1 to 9 to allow it to function correctly. Again thank you for your help (this not the first velleman kit just the first tto baffle me)
Thank you for all the help, I feel such an idiot but some time the translation /instruction can be a bit funny. I am not passing the blame i am the idiot, just saw some hole left and wire in the kit and soldered them in, Again thank you.