I suggest you the following:/\r\n/First, while power is off, measure the following:/\r\n/1) Resistance on charge pump output (pins 1,4) . If resistance is less than 10? then probably you have shortcircuit at the output (accententaly soldered together pins), or damaged charge pump. Less like to have damaged capacitors C26, C27. If you have accintentaly place voltage to AWG, may the problem caused by a damaged TL064 (U3)/\r\n/2) Resistance on charge capacitor (pins 3,5) . If resistance is less than 10? between or by any other pin of charge pump, then you have damaged charge pump. Less like to have damaged to capacitor C25./\r\n/If no problem found, power up circuit./\r\n/1) Measure the input voltage of charge pump (pins 2,4). Should be 5V. If not, problem is before charge pump. Check for a broken PCB line. If voltage is over 5.5V then the problem is power supply./\r\n/2) Measure directly output voltage of charge pump (pins 1,4). If you found -5V then check for a broken line after charge pump. If no volt, then, while circuit is powered place an external power supply on -5V. Be careful to place correct voltage and polarity. Also, after test completed remember to cut first external -5V, and THEN xprotolab power supply. If current is high, then a cheap infrared thermometer can help you to find the damaged part./\r\n/
