Bosch fridge freezer KGU3104GB/03

Dear All,

Our 7 year old Bosch F/F (FD 7803/31329) started to have problems with the freezer a few weeks ago – noticed partial defrosting. Last couple of days temp rose to around 0 degs on door thermom. Defrosted and initally temp returned to normal range, but by next morning back to 0 degs. By afternoon same day had crept down to normal range, but returned to 0 degs by following morning. No contents in freezer compartment and door shut O.K. Fridge also appears not as cold as normal (but not checked with thermo.)

Any suggestions – maybe thermostat or compressor ?

Thanks