New Power supply not working

Hi l replaced the power supply in a friend ps4 pro the old one blow up ( roaches) I put in the new power supply I press the power button it beeps no light I press the power button again it beeps the blue light turns on for a second then off and it repeats this pattern any help would be appreciated.

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What sort of symptoms was it experiencing before you replaced the power supply?

Power supplies going bad can also spell bad news for other components depending on how it failed.

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check that the 12v pins on the motherboard are straight, also if you removed the motherboard you could have over tightened the heatsink clamp

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