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Dead p2721 psu - Computers & Internet

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We did a quick fix and replaced the psu for quick turnround.

Posted on Nov 11, 2008

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6ya6ya
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Posted on Jan 02, 2017

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No debug LED show on my flaming blade gti


If your PSU give wrong voltage it produce same problem with 2 solution:
1-test your PSU
put a wire between green and black and voltage must be:
yellow 12V, red/purple/gray 5V, orange 3.3V.
If your PSU give under voltage (more than -10%):Buy a new one and test your motherboard(mb) with it (in this case there aren't a lot of chance that your mb and/or your CPU are dead)
If your PSU give good voltage:(-10% / +5%):There are a lot of chance that is you mb or CPU
If your PSU give over voltage:Buy a new one and test your motherboard with it (in this case there are a lot of chance that your mb or/and your CPU are dead)

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***I'm pretty sure your power supply is dead, you will either #1 take to repair shop or #2 replace it yourself.

The Best Value 550W Gold PSU 12cm 24-Pin 550 PSU is compatible.

The Corsair Memory 550W VX PSU is compatible and Corsair is an excellent brand, but you may have an issue locating the excess power connectors inside the case.

The Xilence XP480-12R Power 480W Quiet PSU would be fine, providiing the "hard drive connectors:2', are 4-pin Molex connectors.

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Apply a new PSU, the question is is it worth it to you? A psu is rather expensive to replace I would not try repairing it if I were you.

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How can I test FSP250-60 ATV power supply to see if it works or not? Can I test it before I buy a replacement unit? Computer will not power up. Alredy switched power cords several times...and it still...


A great way to test a PSU is to use a PSU Tester. The device allows you to see if all the circuits are getting power and it only requires you to plug it in to power. This allows the ability to test it safe and reliably without accidentally damaging hardware. Below is a link to a tester.

PSU Tester

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Goto copytechnet.com.  That site is like fixya but it's copier technicians only solving problems.  They should be able to help you with the PSU diagrams.

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Asrock P4i65G Motherboard


If the CPU is dead the problems can be
  1. no power
  2. no fans etc or
  3. power, no beeps (errors)
If the Ram is not compatible it would be constant beeping.

With the board in, and power supply 20pin + 4pin Pent 4 power attached,(#2 and #7 of motherboard layout) remove power cord from power supply.
CLRCMOS0 allows you to clear the data in CMOS. The data in CMOS includes
system setup information such as system password, date, time, and system
setup parameters. To clear and reset the system parameters to default setup,
please turn off the computer and unplug the power cord from the power
supply. After waiting for 15 seconds, use a jumper cap to short 2 pins on
CLRCMOS0 for 5 seconds. Remove the jumper. Remove heatsink and fan from CPU. disconnect cpu and reseat it. Re-install heatsink and fan. Plug in the power cord. Try to boot up. If it still does not boot and (no power, no fans etc.) problem would then be cpu is fried.



Jun 02, 2008 | Computers & Internet

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