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- Printers
- Printer Setup, Software & Drivers
- Short circuit in power supply board

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02-21-2025 02:33 PM
@Mangud, Welcome to the HP Support Community!
Thanks for reaching out about your query regarding short circuit in power supply!
We're thrilled to have the opportunity to assist you and provide a solution.
It sounds like there may have been a short circuit when the ground wire made contact with another part of the power supply board. Here are some steps to diagnose and possibly fix the issue:
Unplug the Printer
- Disconnect the printer from the power source immediately to prevent further damage.
Check for Visible Damage
- Open the printer (carefully) and inspect the power supply board for any burn marks, melted components, or damaged circuits.
Smell for Burnt Components
- If you notice a burnt smell, it could indicate a fried component, such as a fuse or capacitor.
Test the Fuse
- Many printers have a fuse on the power supply board. Use a multimeter to check if the fuse is blown. If it is, replace it with a fuse of the same rating.
Inspect the Ground Wire Connection
- Ensure the ground wire is properly connected to the designated spot and not touching any unintended components.
Test the Power Adapter & Cable
- If you have a spare power cable or adapter, try using it to rule out a power supply failure.
Check for Loose Components
- Any dislodged components should be re-secured properly.
Try a Power Reset
- Disconnect the printer from power for 10–15 minutes, then plug it back in and test if it turns on.
Hope this helps!
Take care, and have an amazing day!
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Regards
ZOEY7886
I am an HP Employee