Occasionally this happens. Perhaps I'm unable to acquire appropriate technical literature. Perhaps I'm unable to procure parts or perhaps the repair isn't cost-effective. In such circumstances, I'll contact you and advise accordingly.
I may however, still charge between 30 GBP and 60 GBP plus VAT for the time it's taken to provide you with that information.
The reason that my 'non-repair' charge isn't a fixed figure, is that some machines simply take longer to open up and fault-find than others.