UN55C8000 clicking on and off

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  • asr
    Finding replacement diode iPad Pro 3rd gen A1701
    by asr
    Hello, I am looking for help to replace a damaged diode. The tristar was replaced and a diode was damaged in the process. I have a picture of the diode but dont have an exact donor. I mostly have macbooks for donors and only a few ipad and iphone boards. Diode part number: DSF01S30SCAP
    Im not sure where to find the ipad board number. Anybody have an idea where else this diode is used on other boards? Thanks....
    07-09-2024, 06:24 PM
  • unimatrix93
    TV backlight zener diode
    by unimatrix93
    Hello everyone, I'm repairing an LG TV backlight and I noticed some strange behavior when I touching the backlight strip with a missing Zener diode.

    So I replaced the leds on the strips and they seemingly working fine, but soon as I touch the strip which has a missing Zener diode the whole backlight turns off for a few seconds and then turns back on.

    Is this caused by the missing diode? If so what kind of zener diode should I use to replace it?.
    ​​​​
    The led strips has 9 6V leds.


    ​​​
    1 Photo
    02-10-2025, 12:13 PM
  • B0r1s
    Samsung UE49KS7000SXXH - fast clicking sound in standby mode
    by B0r1s
    PSU - BN44-00878A

    Symptoms:

    The TV turned itself off, and I haven't been able to turn it back on. The standby voltage was unstable and lower than it should be.
    A weak clicking sound was coming from the transformer.

    Video with clicking sound:https://www.youtube.com/watch?v=lAduhjNtqCA

    Progress:

    After the transformer, I measured four Schottky diodes. DM862C and DM864C diodes readings were 003 in both directions. After detaching them from the circuit and measuring them, DM864C was the shorted one. These Schottky diodes are SB550.I...
    01-17-2023, 04:58 PM
  • NicRac
    monowheel repair,Is the diode the problem?
    by NicRac
    Hello everybody☺️ I am glad to be here and looking forward to a good discussion.

    First of all, I am new here. Therefore I will shortly introduce myself.
    I am Nico and currently I study Physics.
    In my freetime I like to build and repair stuff. Especially big battery's.

    A few years ago I got myself an electric unicycle, monowheel or however you call that.
    The battery bms was broken so I replaced and resolder that. Nothing big.
    I used this thing for some years and had a lot of fun. Unfortunately I used it last time in heavy rain. Usually everything...
    5 Photos
    07-26-2024, 06:13 AM
  • dennis_elx33
    NO BODY MARKING Diode
    by dennis_elx33
    Hello Everyone,
    I have 1 diode on a circuit that I suspected to be faulty because the forward and reverse bias has a voltage drop reading.
    While compared to the reading of another diode from the next channel it won't read at reverse bias.
    Now the problem is; it does not have any body marking.
    So I tried to sketch the diagram and found out that it is connected to the base and collector of the C3632 transistor.
    What do you think is this diode?
    Can you please suggest what part number can i use to replace this faulty diode instead?

    Hoping that you...
    06-14-2024, 12:36 AM
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