Epson 8850 Switching on Then Off: Troubleshooting Tips!

Question:
I'm having a problem with my Epson 8850. At one point, it turned off on its own and wouldn’t turn back on; now, I try to turn it on, but it powers up for a couple of seconds and then dies out again. I’ve researched potential causes, and most sources say they could be related to the motherboard. Can you suggest if this problem can be fixed and what should I do?

Answer:

Possible Causes and Fixes

Your description suggests your Epson 8850’s problem is with its mainboard (or motherboard; the terms are interchangeable). Here’s a closer look at what might be going on:

Power Supply Issues

So before we get to that, a motherboard is faulty, or check the power supply unit. Ensure that:

• Ensure that the power cable and adapter are tightly connected.
• You're using a constant power source. To rule out electrical issues, use a different power outlet.
• There are no signs of a frayed or damaged power cable.

Mainboard Failure

• A common fault is shorting components or internal circuitry failure on the mainboard, which causes the printer to turn on for a few seconds before shutting down.
• Many owners of similar printer models report the same symptoms when there’s a short circuit on the board, which causes it to trigger a protection mechanism to shut down the device and prevent additional damage.

Repair Options

Self-Diagnosis and Repair:

• If you’re comfortable disassembling electronics, you can visually inspect the mainboard for burnt components, swollen capacitors, or loose connections.
• Advanced users have been known to reflow or replace a fried chip, but this is beyond most people's capabilities and requires specialist tools.

Identify and Fix the Problem:

• We offer a mainboard repair service at BCH Technologies (https://bchtechnologies.com/printer-repair-service).
• You can do so for your existing mainboard, which can be professionally detailed and repaired.

Use the Printer for Parts:

• After all, if the repair bill is very high or the damage or faults are beyond repair, you may consider using your Epson 8850 as a parts donor printer for the other unit.

Important Considerations

Identifying printer hardware issues can be complicated and typically requires physical investigation. Please note that the remote support option below is not available for printers. We provide an in-house diagnostic and repair service at our local diagnostic facility (BCH Technologies Printer Repair Service, https://bchtechnologies.com/printer-repair-service). Still, that facility is currently operating at high volumes and on a first-in, first-out queue, so it could take a few weeks before we can evaluate your printer.

We suggest using various web resources, especially our YouTube channel (https://youtube.com/@bchtechnologies), for D.I.Y. troubleshooting. You can also search for relevant videos from the menu bar by clicking the search icon next to “About.” Since we’ve made hundreds of videos over the last nine years, it’s safest to use YouTube’s search function to find the most relevant material. YouTube may also recommend videos on other channels that might help your problem.

We appreciate your understanding and support. If you have any additional questions, please don't hesitate to contact us. Once again, thank you for your engagement with BCH Technologies!