@Sowulo_1111, Welcome to HP Support Community.
Thank you for posting your query, I will be glad to help you.
When an HP OfficeJet 4652 printer is unplugged abruptly and won’t power back on—only flashing the screen once—this usually indicates a power-related issue, either with the power supply, internal power components, or a firmware fault caused by the sudden loss of power.
Here's a step-by-step approach to troubleshoot this:
Basic Power Reset
- Unplug the power cable from both the printer and the wall.
- Wait 1–2 minutes.
- Press and hold the Power button on the printer for 30 seconds to discharge any residual power.
- Plug the power cable directly into a wall outlet (avoid power strips or surge protectors).
- Plug it into the printer and try powering it on again.
Check the Power Module
- Ensure you're using the original HP power adapter (output: 32V / 12V).
- Check the adapter for:
Burnt smell
Fraying
Loose plug ends
- If you have a multimeter, you can test if it’s outputting the correct voltage.
Note: Faulty adapters are a common cause of this issue. If you suspect it’s dead, replacing the power adapter is often a solution.
Try a Different Outlet
- Move the printer to a known working outlet in a different room.
- This rules out circuit-specific issues or surges affecting that outlet.
I hope this helps.
Take care and have a good day.
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Max3Aj
HP Support