Zener diode broke in half

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  • 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.


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    1 Photo
    02-10-2025, 12:13 PM
  • sam_sam_sam
    NTE Electronics “NTE5251K” Zener Diode 9.1V @ 50W Do-5.5% Want to build a 9.1 output from a 9.6 lipo4 battery pack
    by sam_sam_sam
    I have bought this Zener Diode for this project what size and wattage resistor value do I need to use to get near 50 watt output
    I bought this from an eBay seller but unfortunately they only had one

    I bought three from Vetco Electronics these are Sylvania ECG5185A 9.1@10w A to Stud what size and watt resistor do I need to use to get near 10 watt output
    I bought three of from them to also make battery packs with this output power limit in mind

    I want to use this battery pack and turn it into a 9.1 output battery pack output to eliminate using 9 volt battery...
    04-23-2025, 05:50 AM
  • nev1001
    What zener diode might fix the sound on Maestro Mayhem gaming chair?
    by nev1001
    Hi, I'm looking for a bit of help trying to fix the audio unit from a Maestro Mayhem 4.1 gaming chair please.

    The chair has a few speakers and vibration motors. All was well, for a while, but now the sound is gone.

    It may be significant that I discovered my son was powering it with a 19V laptop charger when it should run on 12V - it did fully work, for bit.

    I think an issue could be a zener diode (or capacitor) which has shorted out.

    The board's bluetooth input still works, the vibration motors are working, so is the line out socket but not the...
    04-17-2025, 05:09 PM
  • Vincenzo2
    Element 32 inches tv (ELEFW328B) Unknown component: Diode or zener?
    by Vincenzo2
    My Element 32 inches tv (ELEFW328B) lost it's backlight (confirmed with a flashlight test) and the connector on the PCB (it has one board that has a processor chip, switch mode power supply, and backlight circuit) that has the two wires that go to the backlight LED strips has a very low voltage (28-29 volts) when turned ON, in my opinion.

    Started testing components and found an SMD diode or zener that is shorted (even zero fusing resistors read a few tens of milliohms, while this thing reads zero).

    I put some pictures here to show that it is labeled "M7"....
    09-07-2023, 07:43 PM
  • hobostove
    Corsair RM1000e - Help identify 5VSB Zener diode
    by hobostove
    Hey there guys. I've got a Corsair power supply that's come across my bench dead. I usually don't mess with power supplies, but it's a slow week so I'm giving it a whirl.

    Taking it apart I heard a screw rattling around inside, and when I got it apart I found a couple blown components near what I think is the 5VSB area.

    There's a 22ohm resistor that's melted and open, but it still has the bands.

    The other part is a zener diode and it's top went to jesus, so I can't read the marking.

    It looks like the diode connects the source and drain of a TNY284...
    03-27-2025, 02:25 PM
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