Thanks for your advice.
Does it sound right to you that I would feel the tingling effect touching the guitar or radiator - i.e. the grounded element, rather than the phone as connected to the laptop circuit?
The uk adaptor has plastic 'earth' pin - the actual charger plug itself has a euro style connection either type e or f as displayed here:
https://www.worldstandards.eu/electricity/plugs-and-sockets/
So i am guessing that is not earthed properly when used with my adaptor.
I am away out to buy...
Thanks for all of your replies. I will be buying a new laptop charger after reading about how unreliable the knock offs are.
So do you think it sounds like it is coming more from the laptop/phone side of things rather than guitar amp?
I was confused because it was the guitar strings which felt...
Maybe I can pick the brains of some of you who actually understand electrical stuff - this is over my head and I am keen to identify the problem asap.
I initially thought I'd identified a problem with my guitar amp. Last night, when plugged in and playing through the amp connected to the mains...