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
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