Broken TL armature

Discussion in 'General Electronics Chat' started by metiz, Nov 1, 2014.

  1. metiz

    Thread Starter New Member

    Oct 27, 2014
    23
    0
    I bought a 2nd hand TL armature, a Quicktronic professional QTP 1x58. It worked fine for a couple of days, and then it just stopped working. I tried a new lamp but that's not it.

    When checking the tombstones on each end, the one with the purple-white wires gives a high AC voltage (>400v but my multimetre only goes to 250 so I only kept it on there for an instant) while the other end (white-brown) doesn't have any voltage at all.

    Is there a common fault in these things that I could check? or does anyone know what else the bloplem could be? I alread removed the tombstones and directly checked the wires to make sure the tombstones weren't at fault.
     
  2. metiz

    Thread Starter New Member

    Oct 27, 2014
    23
    0
    I opend the unit up and started testing diodes and resistors, basically the only thing I can do. I found one resistor with close to 14 Mohm resistance. I desolderd it from the board and tested it again and I couldn't get a reading at all. The resistor is rated at, I think, 180 ohms. Can anyone confirm? If it is indeed 180 ohms, this thing is fried and should be replaced yes?
    [​IMG]
     
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