Having problems with your Dell XPS 420 (dxcwqc1_4) Intel Core2 Q6600 Quad-Core (8MB L2 cache,2.4GHz,1066FSB) 1000GB/2000MB PC Desktop ?

Dell xps 420 won't power up - Dell XPS 420 (dxcwqc1_4) Intel Core2 Q6600 Quad-Core (8MB L2 cache,2.4GHz,1066FSB) 1000GB/2000MB PC Desktop


Answers :

I gotta know 1st what is ur system\015\012configuration..is all ur system is getting power on..is there any sound coming out of the system..
assuming that the bios has not been flashed in a wrong\015\012way & u r a professional..

before u proceed to complex checkups..check the mains power supply- the fuse/switch/wirings/power cords/other associate circuits..

probably itz either minor case of loose ram/improper\015\012ground/cmos battery..
or major case of faulty or defective smps/cpu/main board short/display adapter or card/monitor

..plz do check the following as in order:..

1)\015\012in power on mode, open/unplug the data/vga cable of the monitor from\015\012cabinet..see if raster or 'osd' is appearing on the monitor screen..if\015\012so monitor is ok..else replace the monitor and see..

2) if u hv a graphics card, replace with a standby or onboard and see..

3)\015\012see if the ram(s) is loose/faulty..open clean/remove carbon & or\015\012oxide formed on the teeth with an eraser n resit it..or replace with a\015\012standby n see..

4) unplug mains supply..pick open/remove the cmos battery..check (above +3v)..resit..

5)\015\012remove/clean dust neatly..dust is non-uniform in nature n may cause\015\012jam/short circuitry/excess resistace n many more..resulting an increase\015\012in heat..

6) open the CPU Heat-Sink with fan out of the socket..put some "Heat Sink\015\012Compound" (available in local electronics chip level spare market)\015\012between the cpu/processor and the CPU Heat Sink *** fan..resit/fit it\015\012tightly in position..

7) the smps itself may b defective/faulty..check the outputs of smps\015\012viz. 0v (black~ground); +12v (yellow); +5v (red, green~ps-on, violet~pg\015\012& grey~sb); -12v (blue); -5v(white); +3.3v(orange)..
\015\012the 'oscillator and error amplifier ic', or\015\012pwm switching regulator circuit..look for defective\015\012protector-transformer/resistance(esp 4.7k)/mosfet..
\015\012
\015\0128) if\015\012itz not the smps, then it must b ur main/mother board..see with a debug\015\012card for mb error..may b short..look for defective capacitors(esp above\015\0121000mfd)/mosfets..go through the mb's south bridge n the circuit lie\015\012around atx connector..the crystal clock generator (if cpu isn't heating up)....
\015\012
always better to seek advise from ur system admin/vendor....
Repair Help & Product Troubleshooting for Dell XPS 420 (dxcwqc1_4) Intel Core2 Q6600 Quad-Core (8MB L2 cache,2.4GHz,1066FSB) 1000GB/2000MB PC Desktop

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