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How to test str w6252

Discussion in 'Troubleshooting and Repair' started by ngzek, Aug 4, 2015.

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  1. ngzek


    Aug 4, 2015
    Please help me. I found str w6252 very hot and voltages from power supply are up and down not stable. How can I test six legs str w5262?

    Attached Files:

  2. nepow


    Jul 18, 2011
    Hi here is the link for the data sheet for that device:
    page 2 shows a typical schematic for this device. Other than the device itself check the secondary side of the switching transformer circuit in case any of the components are loading the primary. Other suspects... opto coupler or the pwm transformer could have shorted turns.
    Not that many components on the primary circuit to check out. Beware! hazardous voltages around the primary side.
  3. ngzek


    Aug 4, 2015
    Nepow thank you very much.
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