Beko freezer not quite as cold as it should be - thermostat or failing compressor?

It happens that snipped-for-privacy@isbd.net formulated :

You need to work out whether the motor is running constantly, or not, to decide whether its the cooling circuit (or failing insulation), or the stat.

Check for flames coming out of the back ;-))

Is this a frost free model?

One failure mode of these in general is that the timer that switches on the defrost heater can get stuck, and hence the main HE inside the fridge slowly ices up reducing the air flow through it to the point where the freezer temperature rises.

Change in ice cream ingredients?! I'd be a little more rigorous with the diagnosis. Try a thermometer with probe - about £3 delivered online. Had one lashed up to my Beko freezer, and records -18C +/- 0.5C with the setting at 2.

No, none of those yet, I think it's pretty old actually before the self-igniting ones got to market. :-)

No its not.

Yes, that's a good idea anyway, we have three freezers (and the Beko is the *newest one!) so a check on the temperature seems very sensible.

Thanks.

It may just need a good defrosting then...