Electric lawnmower repair (Black & Decker ). How to repair the lawnmower if it won't start.

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Thank you !!!
I have an electric lawnmower from Black n Decker. I had it for about 7 years now. It stopped working all of a sudden.
I replaced the bridge rectifier and cleaned the brushes.
Runs like new now!
Some important info before buying:
It appears that the original bridge rectifiers (Black & Decker P/N 72256-03)are rated at 400 volts and 15 amps.
Suitable replacements include almost any bridge rectifier with the same or HIGHER ratings. For example: P/N BBPC2504 or MB254 are rated at 400 volts and 25 amps.
Here are some links online for the parts that you might need:
Black and Decker bridge rectifier:
goo.gl/8d7qMe
suiable replacements:
goo.gl/TK6dLm
goo.gl/9KyFmJ
goo.gl/Jg4nfU
Here is a link for the switch in case that is what you need:
goo.gl/eg2nZF
Or those shunt brushes that I showed at the end of the video (the ones that I cleaned):
goo.gl/YpdBkG