Am I out of luck with my projector?

Question

Epson Projector

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Jamison R @jamisonr64811

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crwdns2931729:0crwdne2931729:0: masiku 5 agoNhl 27, 2025

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Am I out of luck with my projector?

I have a higher end Epson laser projector, specifically a Pro L1100U. It won't turn on nor am I getting any indicator lights. I called Epson's customer service and they told me that since the unit is out of warranty, they won't touch it, and to take it to a 3rd-party Authorized Service Center. I called the nearest service center and got told that I had a nice fancy paper weight since it's likely my main logic board that had failed, Epson no longer sells that part, and even if they did or if I replaced it with a used board, it would need to go back to the factory for calibration, which Epson doesn't allow the service center to do, or any work on these projectors for that matter. This seems like a major Right to Repair issue as it's not a particularly old unit (warranty expired in 2022). Am I out of luck or do I have a lawsuit on my hands?

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score 1 · Answer 1 · 2025-10-27T14:25:46-07:00

Most no power symptom on electronics is due to bad diodes or fuses.

It is going to need disassembly, but the fix is cheap. Finding the culprit will take a little tech knowledge, a multi-meter, and circuit board soldering skill.

Open it up so that you can get to the components on the power and/or main board. Before you disconnect anything, take pictures so you can reconnect it properly. Eyeball all the capacitors to determine if any are bulging or leaking. Test any fuses, then test all the diodes starting with the power supply.

If a fuse is blown, don't stop there because something (diode) likely caused it to blow. Then test any large 3 terminal devices. You may have to look up the part number to find out what it is - transistor, MOSFET, etc. They test differently. I don't think you will find and multi terminal power device, but if there are, they may be a cause if you find nothing else. That would be more difficult to remove and possibly to source.

Replace anything you see as bad. All those parts are cheap, especially on AliExpress.com

I cannot find any service manuals so it is all hunt and peck.

Testing diodes and transistors base-emitter and base collector in circuit is normally easy with the diode function of a multi-meter. One way will show about 0.5 volts (diode drop), the other way will be much higher (circuit resistance). Some may show bad because of the circuit they are in or the type pf device they are. Those need to be removed to test.

Capacitors are either expanding, leaking or shorted. Most don't change value enough to create a problem otherwise.

I opened it up and was able to trace power past the initial 3 fused/relayed power boards and on to the next couple of boards. So I'm pretty certain the fuses/relays are good. I was waiting to hear from Epson/Repair Center before I dug any deeper, but since they told me to pound sand, I'm comfortable doing like you said and checking my diodes and MOSFETs/Transistors on the 2 boards past the power boards. I didn't see any bulged or leaking capacitors, but that doesn't mean there isn't one deeper in that I missed. My main concern now is if I do find something, get it fixed, and powered on, but not working due to a calibration issue, then what? — Jamison R

Epson Projector

Am I out of luck with my projector?

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