Question about HP and Compaq Pavilion Replacement 200w Micro ATX PS3 Power Supply (PSHPPAVILION) Power Supply
Hp pavilion windows 2000/me operating sys..... led on pwr sply comes on,,but when front panel sw pushed....it goes out.......sys was wrk'in........win 2000 screen came on,,,,,,,,rptd software problem,,,,wouldn't load...............then nothing ,on next attmpt to start......just led on pwr supply.....front panel led "flashed' when button pushed........unit is "2003" hp pavilion 7935
You might have a bad power supply. If you have a voltmeter, check the voltage of the standby power supply. This voltage is present even if the system is off, plugged in. It powers a small portion of the logic circuit. It should measure within a couple of tenths of exactly +5 volts. If it is low, or high, this will prevent turn-on. The purple wire of the 24 pin connector is what carries this to the motherboard. The color coding layout is found at http://pinouts.ru/Power/atx_v2_pinout.shtml If by chance this voltage is OK, then check the full on voltages also. Repair of the defective supply is probably by replacement of one or more small electrolytic capacitors in the appropriate circuit, especially if you are technically savvy. Capacitors are available through several suppliers; Digi-Key supplyies Panasonic FC series which are suitable for switching power supplies. Or, you may just replace the whole unit.
Posted on Apr 25, 2007
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Posted on Jan 02, 2017
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