ESR is not the issue. anyone who says it is, doesnt know what they’re talking about, and is just parroting the same misinformation. we’re talking about a power supply circuit, not a high speed microcontroller.[/Quote]
I am afraid it is you who doesn’t know what he is talking about. ESR does matter in power supplies and especially in switching power supplies such as this one.
the problem is, Phillips put 10V Capacitors on a 12V Power Supply. so of course its going to eventually fail, due it to being overvoltaged. the longer you leave the device on at a time, the sooner it will fail.
all you have to do is put a similar capacitance of at least 16V in its place. I put a 35V cap. if you replaced it with another 10V cap, it will eventually fail again, in about the same amount of time that it took it to fail the first time.
the question is, why is Phillips installing 10V caps in a power supply that calls for 16V? incompetence? negligence? what?[/QUOTE]
- C316 is in 5V circuit, not 12V. Everything else is the price game. They can’t afford a better part.
- If you want the capacitor to last it should have a high ripple current rating. Low ESR caps are more likely to have it for a number of reasons. Also, try to pick a capacitor rated for at least 5000 hours at the temperature of 105 C. However, it might be difficult to find a low ESR aluminum capacitor with such a rating. Most of them are rated for 2000 hours only.