Jokes aside, i would look up SMPS repair videos as most chargers are a SMPS and voltage/current controller combined , Learn electronics repair channel does some great videos on it and could do with the views (they being botted by unknowns and loosing revenue)
remember you are working with mains voltages here so if you cant be careful then dont attempt it.
As a old dog in the "you work with computers can you fix this" circles i find first i always do the sniff test across the board, dry or leaked caps will often have a slight metallic smell close up
look for obvious signs of heat on all sides of the board, look for dry joints on large and small components.
good luck
darkspr1te
Thank you for taking the time to put these posts together. It's hugely appreciated.
I discovered the Electronics Repair Guy already & I started at his first video taking things step by step. Such a shame some nasty, probably jealous, troll is giving him grief. He's been invaluable in enabling.e to catch up with modern equipment & materials. Things have moved on a lot since I was building HF Heathkit sound processors and ATUs with glorious air gapped variable caps that are a pleasure to use as kinetic art! That they enabled me to pull in Australian HF ATC on a long wire when I'd planned to start with a very basic setup and as I learned more I'd be able to hear further & further. Australian oceanic routes was my first "catch" on that enamel wire tensioned with bamboo canes. When a seagull hit the thing it made one hell of a twang (a Brixham hazard) but that was half way around the globe, first try. I couldn't really get much further! 😆
Anyway, that was my grounding. My trusty Antex is now replaced by a T12-952 & the new liquid fluxes have blown me away! Solder now flows beautifully. I invested in some light & magnification as tracks and surface mount components are so small & I've got 60 year old eyes now! 🤓
I told my neighbour the charger was stuffed & replaced it exactly from AliExpress. So now I've an item to learn about with no pressure from hopeful neighbours.
I know enough to stay safe. Discharging caps after it's been energised, making sure I have good quality probes on a meter Dave recommended on his channel a while ago. Auto ranging too!
I think it's the availability of boards from China that has impressed me most. Costs for charging protection and solar down in pence if you buy 10 of something you might only need one of but once you've paid postage... I'm replacing small lead acid and chunky alkaline blocks with 18650s and some stunning little USB + solar charging boards.
Things last longer, the sun making a distinct difference and things I take camping are now loads lighter and more efficient.
Oops, I'm waffling. I just wanted to say thanks for worrying, I've listened and that's why I've started at the begining of electronic repair from the proper Isle of Dogs, Gran Canaria. (Canaries being named after the dogs on the island left there by sailor's, not the islands named after the birds. And taken any urgency away from what is a steep learning curve.
Thanks again mate 😀☮️