Behringer Xenyx Qx1202usb Service Manual Hot [upd] -

Located near the external power jack, Q1 (usually a BD139 or similar) is under-sinked. In the , you will see that Behringer specified a small clip-on heatsink. If this has fallen off or was never installed (common on early revisions), the transistor cooks the nearby capacitors (C9, C10), causing them to bulge. The fix: Replace Q1 with a TO-126 package and upgrade to an 85°C or 105°C capacitor.

You don't need an electrical engineering degree to fix these. You need a map. behringer xenyx qx1202usb service manual hot

Don't pay for these on shady PDF sites. Behringer publishes these for free via their support portal, though they are sometimes hard to Google. Located near the external power jack, Q1 (usually