Trailblazer 251 PC2 Schematic

[Jake292]

I have been troubleshooting my Trailblazer 251 after it was jump started (didn't know this was bad until after) and the weld output stopped working. I have narrow it down to a bad PC2. Does anyone know where I can download or buy the schematic for the board? It looks like RV1 (the red circular component in the photos) was the only component to fail before the connector to the board melted (disconnecting power to the board).

Serial number KG251929

[Chevota22]

I'm far from knowledgeable on board electronics, but if the issue is just that one component, it might be worth trying to replace it. They are usually labeled on the component itself. If you are able to desolder the old, and solder in the new, It might be worth the time to try it especially since you have a visual indicator of a bad component. I bet the part itself is less than 10 dollars... probably much less.

[Chevota22]

Also, just searching around, it seems like that board is a common problem on your 251.