Highway_Star
Member
- Messages
- 297
Ah yes, swaged in diodes, stupid idea! You have to rpelce the bridge as a whole, it's not worth the bother of even trying to replace individual diodes. Although if you want to be pedantic, you can still disconnect one end, as only one end is swaged into the heatsink, the other (wire) end is invariably soldered onto a terminal. Unsolder it and away you go.
I've never actually seen a MIG with them in, but I've only ever repaired half a dozen, so it's fair to say what I've seen is not representative. The ones I've worked on were all SIP or Clarke.
A diode in the bridge that's failed short will most certainly take the MCB or fuse out, you've a dead short on the transformer secondary winding. However like I said above, a diode that's failed open will result in low output and excessive ripple.
I've never actually seen a MIG with them in, but I've only ever repaired half a dozen, so it's fair to say what I've seen is not representative. The ones I've worked on were all SIP or Clarke.
A diode in the bridge that's failed short will most certainly take the MCB or fuse out, you've a dead short on the transformer secondary winding. However like I said above, a diode that's failed open will result in low output and excessive ripple.