LCD TV lost manual, need some help here?

I bought an LCD tv last year from argos with the brand Dual and i can't find the manual to tune it. it asks for a pin and i don't know it, before that restore factory settings was not working now i can't tune it at all. can't find customer services number on-line. Any advice and help would be... show more I bought an LCD tv last year from argos with the brand Dual and i can't find the manual to tune it. it asks for a pin and i don't know it, before that restore factory settings was not working now i can't tune it at all. can't find customer services number on-line. Any advice and help would be great!
Thanks
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