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  1. R

    [solved]820-3115 Permanent Optical Output

    No red light, hp ports seems to be ok. But i check only short on pin 1 and 2 (J6700) Is there any other way to test this port?
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    [solved]820-3115 Permanent Optical Output

    Hi I have a problem with this board. I repair power problems after liquid damage but after the test and found a problem as audio on a photo. When power on i have chime. Could you help me with this issue, what you suggest? I have a problem with the motherboard. I fixed a problem with the power...
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    [SOLVED] 820-2784 iMac A1311 don't power on

    Yes, thanks. iMac works perfect.
  4. R

    [SOLVED] 820-2784 iMac A1311 don't power on

    You were right, it was PP3V3_S3_USB_HUB line When I put 3.3V at PP3V3_S3 line nothing was heating but after 1 minute short disappeared and i find this place. Thanks for the answers. Mariusz
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    [SOLVED] 820-2784 iMac A1311 don't power on

    PP5V_S5 4.99 PP3V3_S5_REG 0 (only 3.3V after plug in for 1sec) PP12V_S5_fet 12V PP3V42_G3H 3.41V PP12V_G3H 12V What else i could measure?
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    [SOLVED] 820-2784 iMac A1311 don't power on

    Hi, I have Apple iMac A1311 K74 MLB 051-8337 820-2784 for repair with no power. After i plug in PSU i get LED1 green for 1 second and thats all. I checked U7700 and P3V3S5_12VE_EN1 is 3,8V I soldered new U7700 without any success, still no P3V3S5. I have only 12Volst on board. Could You help...
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