At the outset I must admit to having a very limited electronics knowledge so please excuse if I get things wrong.
I have umber of purchased a number of rechargeable torches where the chargers have failed. The torches sit in a holder where there is an induction coil which charges the torch. In the event of a power failure the torch will come on, and it will also come on automatically if removed from the base. Unfortunately, the charger keeps blowing. Opening it shows obvious failure of a capacitor and a resistor, but replacing these with a capacitor (Vishay 2.2nF Polyester Capacitor PET 220 V ac, 400 V dc ±10% 368, MKT368 Series Through Hole ) and a resistor (TE Connectivity CFR50 Series Axial Carbon Film Fixed Resistor 2.4kΩ ±5% 0.5W -1200 → 0ppm/°C) does not fix the charger. I have attached pictures of a good and a failed charger, and would be happy to supply any other detailed information of the components as required.
Just looking at the circuit and the board it does not appear to be too complicated so I am hoping that this can be repaired, thereby giving my an opportunity to learn more about electronics, and also get working chargers.
I appreciate that this may not be sufficient information, but anyone cane assist or point me in the right direction, it would be greatly appreciated.
Sincerely
Barry Gower UK
I have umber of purchased a number of rechargeable torches where the chargers have failed. The torches sit in a holder where there is an induction coil which charges the torch. In the event of a power failure the torch will come on, and it will also come on automatically if removed from the base. Unfortunately, the charger keeps blowing. Opening it shows obvious failure of a capacitor and a resistor, but replacing these with a capacitor (Vishay 2.2nF Polyester Capacitor PET 220 V ac, 400 V dc ±10% 368, MKT368 Series Through Hole ) and a resistor (TE Connectivity CFR50 Series Axial Carbon Film Fixed Resistor 2.4kΩ ±5% 0.5W -1200 → 0ppm/°C) does not fix the charger. I have attached pictures of a good and a failed charger, and would be happy to supply any other detailed information of the components as required.
Just looking at the circuit and the board it does not appear to be too complicated so I am hoping that this can be repaired, thereby giving my an opportunity to learn more about electronics, and also get working chargers.
I appreciate that this may not be sufficient information, but anyone cane assist or point me in the right direction, it would be greatly appreciated.
Sincerely
Barry Gower UK
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