Just discovered the charger for my 18v black and decker electric drill power packs quit working. I managed to repair it and because I was bored, I took pics....

Step 1: gently open the transformer housing...

We can see the problem here, that resistor is toast. If you're not en electronics person, the component in the lower right corner that is pink and has black around it on the plastic... should not be pink or have scorch marks under it.

Step 2: Desolder/remove the old resistor

Step 3: Insert a new resistor
The old one was unreadable but I found out from the internet that a 100ohm resistor works and luckily I had one. Had to use the soldering iron to keep the holes open while I stuck it in(gigity).

Step 4: Solder
Sorry for the shitty pic.

Step 5: cut the extra wire off of your half-ass solder job

Step 6:reassemble and glue
A hot glue gun should be in any tinkerer's tool box