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Have you attached a set of ear phones to the output of the turntable to see if your getting any audio output?
If you dont have a phono adapter to connect your headphone to the output, have you tried swapping the input on the amp just to rule out an amp issue?
Secondly does the needle look in good shape, as this is often the cause of such a fault?
Its vary rare for there to be a fault in the armature, I would check the cartridge is at fault you can do this by turning the turntable and amp on, turn the volume up then short the pins where the cartridge would fit, if you get a buzz this demonstrates its the cartridge if you dont its the internal pre amp circuit.
Let me know how you get on.
I would say the cost of repair would be around £80, so probably not economical to repair.
That said it could be repaired if you find a local TV and Audio engineer, however most local firms replace modules rather than fault find at a component level.
So yes it could be repaired but its probably cheaper to look to buy a replacement.