Weller WS81 fail please help

Discussion in 'General Electronics Chat' started by kwm488, Jan 26, 2014.

  1. kwm488

    Thread Starter New Member

    Jan 26, 2014
    2
    0
    Hi
    I own Weller ws81 and used 1.5yr. But the fuse is keeping blow now.

    I did follow to fix it. But it doesn't work.

    1. I replace Triac (BTA12-600B). The fuse is not blow now. I can turn on solder. But the fuse will blow again after 30sec. It looks like the new triac dead again.

    2. I guess the solder heater short. So i replace solder heater and traic. But the fuse keep blow.

    3. I think ic have problem. I change all ic in the pcb. But it is the same.

    4. I checked all smd resistor. It is no problem.

    Last, the transformer voltage is correct

    Please help
     
  2. Dr.killjoy

    Well-Known Member

    Apr 28, 2013
    1,190
    156
    Did you check the resitance of the iron like in the manual? ???
     
  3. kwm488

    Thread Starter New Member

    Jan 26, 2014
    2
    0
    Hi
    I checked all resistor. All resistor no problem.
    Please help
     
Loading...