If it's not broken, then I don't need to fix it.
David Duncan posted an answer for this Harmon Kardon Harman Kardon AVR-1600 with BIC Acoustech PL-76 Home Theater System:
"Use an ohm meter and check to see if your main power transformer is open."
David Duncan posted an answer for this Pioneer DEH-P9800BT - In-Dash CD/MP3/WMA Receiver With Bluetooth Wir:
"The clip that locks the plate into place probably broke."
David Duncan posted an answer for this Sony Lamp/bulb For Kf-50we620, W/housing, 150days Warranty:
"Lamp are pretty easy to change. Your lamp is mounted in the front of the TV.On the back..."