La-h103p Schematic

Here is why every repair attempt should begin with finding the :

At the AC inlet (CON1), you will find a fuse (F600, typically 4A/250V), a varistor (V601 for surge protection), and a common mode choke (L601). The schematic shows how the X-capacitor (C601) and Y-capacitors (C602, C603) filter electromagnetic interference. This is the first place to check for open fuses or shorted varistors after a lightning strike. la-h103p schematic