My Braun 6520 shaver suddenly stopped charging, so I went ahead and bought the battery circuit board for $39.95 and had it changed by a Braun technician.

He plugged it in for about 20 minutes in order to test it; the green light turned on, the shaver started getting hot , but would not turn on.

So, I brought it home assuming all is fine and plugged it in order to give it the full charge. However, the green light started flickering after 2-3 minutes.I left it plugged in all night thinking it might charge.
The green light kept on flickering all night and the shaver has not charged at all.

I would greatly appreciate if I could have an advice on the above.

Thanks in advance

Health & Beauty - Braun - Flex Integral 6520 Electric Shaver