kepeb Well-known member Joined Sep 4, 2010 Messages 581 Location Norwich, UK Oct 28, 2010 #1 if, hypothetically, someone accidentally applied 9v to the headphone out of an mp3 player how much damage do you think it would have caused? : ???
if, hypothetically, someone accidentally applied 9v to the headphone out of an mp3 player how much damage do you think it would have caused? : ???
JohnRoberts Well-known member Staff member GDIY Supporter Moderator Joined Nov 30, 2006 Messages 30,327 Location Hickory, MS Oct 29, 2010 #2 It depends on a few things, like how long was the 9V applied and the design of the headphone amp. Most HP amps use a modest series resistor in series with the output. This resistor could be burned up, and or the chip damaged. It should be pretty easy to confirm if HP output is working after such an insult. JR
It depends on a few things, like how long was the 9V applied and the design of the headphone amp. Most HP amps use a modest series resistor in series with the output. This resistor could be burned up, and or the chip damaged. It should be pretty easy to confirm if HP output is working after such an insult. JR