Thanks for the advice guys. Luckily a mate who some of you may follow on You Tube offered to fix it for me. If turned out to be more than one issue including a new laser and complete re-cap but delighted to say it's as good as new.
Below are the 2 videos which are interesting to watch and might help some identify similar issues.
Below are the 2 videos which are interesting to watch and might help some identify similar issues.


