Bosch KSU fridge LEDs flash intermittently. How to remove pcb?

I have a Bosch fridge. Model KSU something. The temperature LEDs flash intermittently (most of the times they are on , but sometimes they flash). I know the pcb capacitor is faulty. Where is the back panel? How do I remove the pcb? How do I replace the capacitor on it? If anyone knows the answer to any of these questions please reply.