Hi Martin,
Have you fixed your G7 yet? I can help you get your key fixed. I repair Technics organs and I have 2 G7's here. I also have spare parts. Please send me an E-mail and I can help you get your organ fixed. Write me at
backstagelive@gmail.com.
Dead keys are a common problem with G7's if they are used in a smokey enviroment. After removing the screws and lifting the keyboards, remove the circuit board for the key contacts. You will see a membrane on the back of the board. It easily peals off and you can clean the contacts with alcohol and a Q tip. That should fix it. If you need help, you can call me at 920-237-1450