4 ms·
I have a Dell U3011 (flagship 30" monitor from 2011). Died due to capacitor. The funny thing is, this monitor looks like it was designed to die. Essentially,
by twawaaay 4y ago
I have a Dell U3011 (flagship 30" monitor from 2011). Died due to capacitor.
The funny thing is, this monitor looks like it was designed to die.
Essentially, the smoothing capacitor was placed directly in the stream of hot air going up. Loads of better ways to organise the board or just move the capacitor but no, the capacitor had to be in the worst possible place for it.
I replaced the capacitor with one specced for much higher temp and it is still going.
- mrguyorama 4y agoThe person who laid out the power board likely never even knew the person who designed the ventilation. They might not even have been in the same company.
- twawaaay 4y agoNah, thermal design is a thing. Especially for a device that draws constant 100W and has no active cooling or heatsinks. I am an amateur, but even I know to take this stuff into account when designing my boards. Like being aware which components are sensitive to temperature, which components emit a lot of heat, and what kind of resistances to ambient and ambient temperatures I may have. The power board is a part of large board that is specifically designed for this particular housing so there is no question about orientation.