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Recent content by anas_xrt

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    APC UPS ES 500 keeps on beeping

    Hi Raza, Today, after I have changed LM324 for a week, now the problem is back again. What is cause the LM324 damage, could you give me an idea or solutions, pls.:-?
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    APC UPS ES 500 keeps on beeping

    Hi Raza, After I have replace the LM324AN as per advised, now it works. I can repair it now. Just for you info. I replace the LM324AN with LM324N. It still work find. I have look into the IC specification, what was difference is the Current - Supply. LM324AN is 1.5mA but LM324N is 1mA. If it...
  3. A

    APC UPS ES 500 keeps on beeping

    Hi Raza, Yes, I will test it on coming holiday, and I will let you know the result. Thank you every much,
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    APC UPS ES 500 keeps on beeping

    Hi Raza, I have the problem as following detail, I am not sure that it is the same problem indicator that I can use your solutions, could you help? 1. When never open APC ES-500 (model BE500R-AS) with plug-in to outlet (220V) it will have the continues Beepppppppppppppppppp with the Green LED...
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