On 09/02/2018 16:46, ss wrote:
Managed to get both chargers working courtesey of this NG.

Charger 1 required a new fuse holder & fuse, old fuse holder wasnt
giving continuity.

Charger 2 replaced the faulty diode as advised and now working, stopped
blowing fuses now.

I put both on the mobile scooter for a couple of hours each and no
problems.

I initially thought my odds were very low to get any of them working due
to lack of electronic knowledge, so pleased they are now both working.

Thanks all.

Excellent, I award you a UK.D-I-Y gold star!