I guess this maybe becoming tiresome for others, but I continue to flounder. Re. the caps, please can someone advise which cap(s) I should try and replace, and where I might get hold of a replacement ? In an effort to keep this understandable (for me !) I've touched up this pic and numbered what I think are the caps. Please can someone advise which numbered cap(s) - as in 1,2 and/or 3 - I should try and replace, and with what, and where from ?
Thanks very much
P.S. I tried completely disconnecting the green earth wires, this made absolutely no difference.