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- HP Community
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- Desktop Hardware and Upgrade Questions
- Re: Pavilion Tp01-1138.no - powerless

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03-05-2025 12:19 AM
Hello forum, my 4 year old stationary pavilion does not start at all this morning, it is completely powerless - so I ssupect the internal power supply is gone. I am having trouble finding a replacement that I can order to shift it myself, in the spec it says HP 310 W power supply with GOLD output, whatever that means. ANy ideas where in EUrope I can order a replacement online ? Best regards
03-05-2025 05:07 PM
Welcome to our HP Community forum!
The part number for the stock 310-watt power supply fitted in your HP Pavilion Desktop - TP01-1138no (1G9T1EA) is: L64961-800.
You can purchase a replacement 310-watt power supply via eBay-Germany: https://www.ebay.de/sch/i.html?_nkw=L64961-800&_sacat=0&_from=R40&_trksid=m570.l1313.
Please be advised that there are also three power supply upgrades available for your PC:
1.) 400-watt power supply with p/n: L04618-800 or 942332-001
2.) 500-watt power supply with p/n: 901759-013 or L05757-800
3.) 650-watt power supply with p/n: L57253-003 or L36049-003
Kind Regards,
NonSequitur777
03-08-2025 09:08 AM
Hello again, just replaced the Pwr supply which is brand new, but alas the PC is stone dead. There is a small LR2033 battery on the circuit board, but I’m not sure if I dare to replace it ? I have a 512 GB SSD drive which I suspect need some kind of low power just to keep its data. What can I try to fix next after replacing thE PSU ?
03-08-2025 10:38 PM
Update hehr; seems the 2032 battery is needed for the PC to wakeup when youpress the start button. I did replace it and afterwards the computer started normally again. This is not desceiberd in thr manual, but now I am back in business again. PC workong and I have an extra PSU which is not faulty.
03-08-2025 11:45 PM
An interesting piece of information that the CMOS CR2032 button battery is required for proper startup. Thank you for sharing!
Perhaps you can return the power supply to the Seller to get your money back.
Kind Regards,
NonSequitur777