Thanks to driverblock,
Yes of cause I double checked before I posted. Every component is at there right place.
4 equal transistor "PN2222A" close to the LED and the single transistor "PN2907" at the single place.
Thanks to adafuit_support,
Yes I have only a multimeter. I checked the lack of voltage, it fall only from 5V (4 x 1.2V AAA accu) to 4,8V while I pressed the reset button.
So, my next steps are to re-solder single components and solder it in an existing (working) TV-B-Gone or give google a try.