The input transformer is open and needs to be replaced.
If you have the skill to determine the transformer input is open, I would expect you have the skill to replace a transformer. Based on this assumption: determine the input voltage (120 vac?), determine the output voltage (14 vac?), determine the power requirements (output voltage times the charging current), find a transformer at www.digikey.com or www.mouser.com or www.newark.com.
SOURCE: charger for 12 volts 7 amp battery smf
you need to go to a **** smith store and bye a kit to do this cheers peter
SOURCE: I have a older Dewalt recharge drill dd991 14.4 volt I need to
The chuck retaining screw are left handed and the chuck itself is standard right hand. Let me know if I can help further
SOURCE: Need to replace power cord to battery charger of cordless drill
it takes a 24V DC 200mA The one I have is a Ktec Model KA12D240020034U
SOURCE: My 12 volt panasonic cordless drills charger
Unfortunately, Panasonic uses a unique profile on their battery packs that allows them to fit into Panasonic chargers. So trying to find another brand charger won't be possible. At one time, DeWalt made a really nice Universal charger that would charge literally any rechargeable battery made, but it cost a small fortune and they stopped selling them after only a year.
I would suggest that you call the customer service number and see if they can provide you with a local service center that can repair your charger for you.
http://www2.panasonic.com/consumer-electronics/support
You can also check the Panasonic site to see if they'll help with a repair or possible replacement under warranty or customer satisfaction, etc.
Sorry to be the bearer of not so good news, but hope you find this Helpful and best regards!
SOURCE: charger died.
It is usually a current limiting resistor anyway... so I would think that about 100 Ohms should be all good, you generally need about 250 - 300mA to charge ya batteries. It is simple Ohms law calculation.
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