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unknown PWM controller

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On 2/23/2023 at 2:56 AM, HarryA said:

That is most likely an internal factory  number. Remember they do not want you to repair them but to buy new ones. There are a number of  videos on youtube in regard to chargers. Search on " Black&Decker 18V Li-ion charger "

for example: https://www.youtube.com/watch?v=c-pTziUV1as

I think you are right. Because I never came across such a strange marking on ICs before. 

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