schematics for PSU L20529-001 500 watt 875-0129

[298863]

NEEDING ...SOS ..SCHEMATICS HP 500WATTS  PSU L20529-001: FERRITS ON PSU BOARD NEED TO KNOW WERE FERRIT GOES ON PSU BOARD

[NonSequitur777]

@298863,

Welcome to our HP Community forum!

If your HP OMEN Obelisk 875-0129 originally shipped with the 500-watt PSU (p/n: L20529-001), that is indeed an HP-branded LiteON ATX unit. According to HP PartSurfer, your product number (4NN49AA) lists p/n: L26279-800, which is another HP-specified 500-watt "Persan" PSU -also a standard ATX form factor, typically made by Cooler Master or LiteON for HP.

That said, schematics or board-level diagrams for HP PSUs are not publicly available, and HP doesn't provide ferrite bead placement or internal service documentation for them. If a ferrite is missing/damaged, simply tacking a bead anywhere on the board is unlikely to reliably fix the problem and can make things worse (instability, extra heat, or no change). Attempting to re-install ferrite beads without a schematic and without board-level experience is very risky and unlikely to be the best long-term fix.

Fortunately, you don't need to replace it with the exact HP model.

Any standard ATX power supply (500 to 750-watt from a reputable brand such as Seasonic, Corsair, or Cooler Master) will work perfectly fine in your Obelisk case, as long as it has:

• 24-pin ATX motherboard connector

• 8-pin CPU connector (EPS12V)

• Sufficient PCIe connectors for your GPU

In short: it's not worth troubleshooting the ferrite component on a failed PSU. Simply replace it with a quality, standard ATX PSU -it's fully compatible with your OMEN 875-0129.

Kind Regards,

NonSequitur777

[298863]

Thanks for your concern. I really want to fix the one I have because I'm not able to afford another PSU, so I keep the original

[NonSequitur777]

@298863,

I am not necessarily talking about buying a new 500-watt power supply -what about this CAN $25 Thermaltake 500-watt purchase option via Amazon-Canada?

Point is, messing around with defective power supplies is almost never a good idea.

Kind Regards,

NonSequitur777