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BESTEC EP-AG210SDE Transformer

Anonymous user -  
 Lilou -
Hello,
I would like to know how to test this type of transformer, on the output there are 3 pins: 42V-GND-PSC. Thank you very much for your response.
Rayro

2 answers

  1.
    thony62410 Posted messages 27 Status Member 2
     
    Hello,
    I have the same power supply on my Epson XP-322 printer, it no longer turns on so I decided to test the power supply, between 42V and GND I have my 42 volts
    GND and PSC -----> 40 Volts
    Is my power supply good?
    2
    1. Lilou
       
      Hello Thony,
      I have the same issue; I have a voltage on the GND terminal. What does this PSC correspond to?
      Do you have any updates since? Was the power supply faulty?
      Thank you
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      1. la > Lilou
         
        Hi, the Power Supply Circuit is a output control system; if the output voltage value is too high, it directly controls the output transistor via an optocoupler. If the PSC is down, you probably have 42 volts at the output, but no current possible, meaning you measure a no-load power supply and not full load giving the desired current on the label.
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      2. Lilou > la
         
        Hello, thank you very much for your reply. I made a mistake in my previous post; I was indeed talking about a voltage on the PSC and not on the GND.
        Indeed, I have 42V on the + terminal (42V) and on the PSC.
        The power supply is therefore probably dead.
        Thank you very much.
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  2. Jojolaguitare Posted messages 12012 Registration date   Status Member Last intervention   2 782
     
    Hello.

    We assume this is the model >>>

    https://login.aliexpress.com/?from=sm&return_url=http://fr.aliexpress.com/item/32778348006.html

    If you have a digital multimeter, set the selector to DC 100 volts or more. Even if you reverse the tester's polarities, it's not a problem; it will indicate in - V. Just reverse the leads to get the positive from the transformer (red cable)

    Multimeter = €8.90 at Leclerc, battery included.

    See you...

    P.S. = The + 42 volts is on the left and the ground (middle)



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