Is it worth getting my fridge freezer fixed?

Looks like this model is now out of date and I wouldn't trust your service guy. Any service agent will know whether the door switch, thermal sensor or control panel is faulty by simply testing them. I would not have to fit complete parts to isolate the faulty part.
Sounds like he doesn't know how to or wants the job of fixing it.
Try an independant repair service, local one man repair shops tend to give an excellent service.
If you want Currys do a good range of fridge freezers; https://www.currys.co.uk/search?q=Liebherr+fridge-freezer+model+CPEL4813&search-button=&lang=en_GB

https://www.currys.co.uk/appliances/refrigeration/fridge-freezers/bosch?searchTerm=Bosch%20fridge%20freezer

https://www.currys.co.uk/appliances/refrigeration/fridge-freezers/hoover?searchTerm=hoover%20fridge%20freezer

To show just one retailer. There are many more out there. Try and buy locally if you can, you will get a better service I find.

I bought a Philips (Whirlpool) years ago and after 3 years, out of warranty, it packed up. The aluminium heat exchanger started leaking. Not worth repairing.
I now purchase Hoover. They has a 10 year parts warranty.
They are all 15 tears old now.
One gets what one pays for I suppose.

Question edited for clarity.

It sounds like you have the new LED type bulb. They are listed here.

https://www.buyspares.com/beko/fridge-freezer/lamp/catalogue.pl?shop=beko&path=110911&refine=lamp

https://www.google.com/search?q=Beko+asl1331

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no problem with that it is normal..your ref working properly it is just the motor you hear

mINE IS DOING EXACTLY THE SAME - I'VE HAD IT ABOUT 2 WEEKS BUT ONLY STARTED MAKING THIS SOUND TODAY AND AS YOU SAY ONLY WHEN THE FRIDGE DOOR IS OPENED AND THEN SHUT!

Hi monica ,
the heating element in your freezer might be bad or the thermostat. that is way your freezer is not melting the ice inside and the noise that you hear it's the fan that prob' tuch ice or also is getting bad.
let me know if you need more help...

Sounds like the evaporator fan is doing its job. Nothing to worry about. Good hearing is a blessing all fridges make different sounds some click loud while others gurgle loud. Some pop and snap. Till I got my hearing aids I didn't know mine ran so loud and clicked.

It's the fan bouncing off the fan-motor housing. The best way to stop this is to shim the motor mount so the fan will ride with the motor shaft "out" preventing it from bouncing. When you raise the fridge on one corner you are doing the same thing the shim will accomplish.

The draining gurgling sound is probaby freezer defrost water being pushed down the drain tube into the drip pan at the bottom. The door action pushes/pulls air in the tube and pushes out water.

mine does the same its sort of like a food digestion sound a reliable fridge mechanic that i have used for over 15 years told me this sound is normal and if it stopped then it would be a problem so no dont worry its fine glenn.....

Depends a bit on whether the compressor really is running, or if it's just humming because it's got power on the run coil, but not on the start coil.

Have a careful listen to the compressor. If it's making the trilling or gurgling sounds that go with a working compressor, then your problem is probably one of lost gas. Fixing this is not a do-it-yourself job.

If the compressor sounds like it's stalled, the problem may lie with the starter. Replacements are usually cheap enough for it to be worth fitting a new one just to see if it works.

A.

yes it can b fixed is the fridge running ? if it is it will need re gasing which is a common fault with beko and you should not pay more than £40 for the re gas if it is not running it will b either your thermastat which again you should nt pay more than £48 4 or the compressor which will b aprox £120 supply and fit none of the above should b done by a novice good luck