Is this a diode, a resistor, or something else?

Discussion in 'General Electronics Chat' started by solarflare, Mar 18, 2015.

  1. solarflare

    Thread Starter New Member

    Mar 18, 2015
    4
    0
    Hi. I'm trying to repair a power source for an HP Proliant ML350 server, a DPS-800GB A, and among several burned components I came across these two misteries. I can't find the schematic for the board...
    Can someone identify them? One of them seems to have red-yellow-yellow bands, the other has a black-yellow-yellow bands. I can get no readings/values from measuring them.
    _P1330069.jpg _P1330073.jpg _P1330081.jpg
     
  2. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
    5,003
    745
    they're probably blown diodes or capacitors
     
  3. solarflare

    Thread Starter New Member

    Mar 18, 2015
    4
    0
    Hello Dodgydave. It seems to be a really difficult question, I've been asking for a few days now, to coleagues and suppliers, and still no one has assured me what this is. There have been many guesses, but I haven't been able to find a match for these components.
    That (now empty) space between had three X2-MKP metallized polypropylene film capacitors, and the mistery components bridged the two closer caps to the third one. The caps were blown.
     
  4. PlasmaT

    Member

    Feb 19, 2015
    40
    6
    I notice there is an inner sleeve.
    This is a glass encapsulated ceramic capacitor.
     
  5. uwed

    Member

    Mar 16, 2015
    64
    17
  6. solarflare

    Thread Starter New Member

    Mar 18, 2015
    4
    0
    Glass gas discharge device for overvoltage protection?
    Looking at its build it seems just like that. :) the capsule inside is similar.
    Thanks so much uwed. Now I just have to find a supplier for this rating.
     
  7. solarflare

    Thread Starter New Member

    Mar 18, 2015
    4
    0
    Hi again.
    I was unable to identify the reference of the gas discharge tube, and the suppliers could not help me.
    In the meantime I got a working power supply and I'm trying to measure the gas tubes to understand if they are still working.
    Can someone help me on how to test them? I get no readings from the tubes using a multimeter.

    Thanks
     
Loading...