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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Trouble with aftermarket battery charger: Need schematic
I have one of these Universal Smart Chargers
http://www.batteryspace.com/index.as...odID=2350&HS=1 which I use to charge my 12 volt drill's nicad battery pack. I guess these are commonly used by RC car/plane enthusiasts. I don't use the drill all that much, so I probably haven't charged the battery more than 5 times since getting the charger about 1 year ago. Yesterday when I went to charge the battery, the charger was completely inoperable. No red/green indicator light, no voltage output. Opening the charger, I see that surface mount resistors R8 & R5 are burned, so burned I am unable to read the code on them to determine their value. Does anyone have any idea where I might find schematic for this charger? I have tried the place I bought the charger, all they want to do is sell me a new one (fat chance). Perhaps someone else has one of these & wouldn't mind opening theirs & telling me what the code on these 2 resistors is (remove the 2 screws located under the stick on rubber feet at the top of the label on the back, then the back comes off easily). I guess these are commonly used by RC car/plane enthusiasts. Thanks in advance David |
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