hi I have velleman MK194N FM radio kit and it is not working l do not have any solder bridges and believe it is all correct but when l turn it on l just get a slight sound as though it is trying to working but not even the LED is lighting up and l have taken great care regarding + - connections
From a distance it is difficult to say where the error is, without being able to see the kit.
There may be a problem with the FM module, or a component has not been placed correctly.
Check again with the manual in particular for polarized components: IC, voltage regulator, transistor, etc.