Tuesday, October 23, 2012

Repairing Power Supply COMPAQ HP PDP-124P 185W

Preferably using a low electric current in the test, less than 220 volts, It is better to have 80 volts, so as not to damage the others components of the power supply.

Repairing Power Supply COMPAQ HP PDP-124P 185W



After you opened the power supply box, start the measurement of the following pieces, they are most damaged pieces in the COMPAQ HP PDP-124P 185W power supply:
  1. Fuse 5 Am
  2. Resistor value MOV1_2_3 V10K
  3. Resistor value 1 kilo ohms (Brown. Black. Red. Gold) R9
  4. Resistor value 1 Kilo Ohm  (Brown. Black. Red. Gold) R5
  5. Resistor value 330 ohms (Orange. Orange. Black. Gold) R7
  6. Resistor value 1 ohms 1 Watt R11
  7. Integrated circuit U1 UC3845
  8. Integrated circuit U5 TOP 244P
  9. Transistor  Q1 PN 2907A
  10. Transistors MOSFET Q1 FQA9N90C
  11. Transistors Q2 B1116
  12. PHOTOCOUPLER 6 U1 U3 B337T
Replace defective components


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