Archive for the ‘Resistors’ Category

Dynapower DP-40205 with exploded FET

Wednesday, November 25th, 2009
Dynapower DP-40205 top

DP-40205 top

Dynapower DP-40205 with exploded FET

Exploded FET

These pictures come from a Dynapower USA DP-40205 400W power supply.  It appears the standby regulation failed and took out the FET pictured above and also the capacitor and resistor near the top of the fan.  The exploded piece of the FET was rattling around the power supply when it was opened and the part that remained on the board was loose.  It’s suspected the capacitor damage was from overvoltage when the regulator failed for unknown reasons.  Credit: http://blog.kevtris.org/

Resistor and PIC16F872 burned in a Weller WESD51

Wednesday, November 4th, 2009

Resistor and PIC16F872 burned in a Weller WESD51

Weller WESD51 fails with a resistor and a PIC burning up with no apparent cause.  Weller fixed this under warranty and put a new tip on the iron as a little extra.  Credit: http://www.rtach.com/pics/burn2.jpg

Resistors destroyed by RF

Thursday, October 29th, 2009

Parts fried by RF

Resistor was turned into a dipole antenna and coupled to the parts seen.  They were destroyed when brought near a 40-50W radio transmitter.  Credit: http://www.kevtris.org/