You’ve had your Optoma projector for several months now but still don’t know what the flashing lights on the device mean? We hear you. It also took us some time and some online research to know what they mean.
There are three different colors of lights you’ll see – orange, red, and green. If you want to learn more about what green lights mean, you’re in the right place!
You can also lessen your worry because, for some functions, the green light doesn’t signal any issue at all. They’re just reminders about your projector’s current state or function.
In this article, you’ll finally learn what those blinking green lights mean, depending on their location and their length of blinking. For those that signal slight issues, we’ve also listed down how to fix them.
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3 Types of Flashing Green Lights Home Projectors
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For Optoma home projectors, you’d encounter three types of flashing green lights, and the main difference is how long each blink takes.
We’ll start with the fastest flashing to the longest one in this list below.
| Length of Flash | Meaning of Flash | Other Lights Involved |
| 0.25 Seconds Off, 0.25 Seconds Light On
(Flashing Can Last Up to 100 seconds) |
Quick Resume | N/A |
| 0.5 Seconds Off, 0.5 Seconds Light On | Power On (Warning) | N/A |
| 0.5 Seconds Off, 0.5 Seconds Light On | Power Off Cooling | N/A |
These lightning messages are generally for all home projectors such as Optoma True 4K UHD Gaming Projector , Optoma UHD 146X , and Optoma UHD 38 Bright .
3 Types of Flashing Green Lights on Professional Use Projectors
For projectors used in professional settings, the lighting setup and indicators aren’t as far off versus the home projectors.’
However, depending on the model, some models show blue light instead of green light.
Projector models with green lights are Optoma EH415ST and Optoma EH412 , while those with blue light counterparts include Optoma ZH403 and Optoma ZH406 .
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Professional Use Projectors With Green Flashing Lights
| Length of Flash | Meaning of Flash | Other Lights Involved |
| 0.25 Seconds Off, 0.25 Seconds Light On
(Flashing for 100 seconds) |
Quick Resume | N/A |
| 0.5 Seconds Off, 0.5 Seconds Light On | Error – Over Temperature | Temperature Red Light Turned On |
| 0.5 Seconds Off, 0.5 Seconds Light On | Error – Fan Failure | Temperature Red Light Blinking |
| 0.5 Seconds Off, 0.5 Seconds Light On | Error – Lamp Fail | Lamp Led Red Turned On |
| 1 Second Off, 1 Second On | Power Off (Cooling) | N/A |
| 2 Seconds Off, 2 Seconds on (Slow Flashing) | Standby State | N/A |
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Professional Use Projectors With Blue Flashing Lights
| Length of Flash | Meaning of Flash | Other Lights Involved |
| 0.25 Seconds Off, 0.25 Seconds Light On
(Flashing for 100 seconds) |
Quick Resume | N/A |
| 0.5 Seconds Off, 0.5 Seconds Light On | Power On (Warning) | N/A |
| 0.5 Seconds Off, 0.5 Seconds Light On | Power Off Cooling | Goes back to red light when Cooling is turned off |
FAQs
1/ What do you do when your device is already overheating?
When your device is already overheating, as signaled by the flashing lights, there are several things to check and conduct:
- Look for your device’s air in and outlets and ensure they are not blocked. It could be that another item is blocking the airflow, or the outlets are so clogged with dust and particles.
- Check your room temperature. Ensure that the environment your projector is in is below 45 degrees Celsius.
- Contact a Service Repair Center. If you’ve conducted both steps above and your projector is still overheating, then reach out to your nearest local repair center.
2/ My device is still flashing green, even when the projector is cool enough, and the fan works fine. What should I do?
Now it’s time to troubleshoot for possible issues on the mainboard or the power cord.
- Replace your power cord. If your projector is on and you notice that it’s not warming up, you may have a defective power cord. Either it’s no longer supplying power to your device, or causing malfunctions to your projector. In any case, best to run to the nearest store and replace it ASAP.
- Change your LED light. You know that the power cord is not defective and the power light blinks inconsistently. This only means your LED light needs replacement. Since it’s quite old and used up, this might cause random blinking.
- Has your mainboard been checked and replaced? If the two options above have not resolved any issue, you’re probably looking at a defective or run-down mainboard. Head to your nearest service center to find out.
3/ I want to replace my lamps and headboards myself, so I can use my projector urgently. Is this recommended?
If you want to replace your projector lamp, finding steps online and replicating it yourself is easy. There’s no doubt you can do this on your own!
But if you want to change your headboard, we suggest that you take it to your nearest service center for several reasons.
First, you want to make sure that the headboard is the part that actually needs fixing. Replacing the mainboard does not come cheap. Before you commit to changing an important tool, get feedback from a professional first.
Second, are you confident enough that you can properly change one? In installing and replacing these parts, you’d need to be more careful where you place the screws and how and where you’re attaching them.
And lastly, to keep your costs down if possible. Grab your device’s box and check if your unit is still qualified for a warranty. This way, you don’t have to spend any money on the new parts and replacements.
Conclusion
Your projector also sends messages to alert you on its health and condition. Always be on the lookout for these signals and hopefully, with the help of this guide, you can decipher what they mean and be quick in resolution.
If you do not trust yourself to inspect and repair parts, don’t be afraid to ask for a professional’s help. This will save you time and money in the long run!
Vance is a dad, former software engineer, and tech lover. Knowing how a computer works becomes handy when he builds Pointer Clicker. His quest is to make tech more accessible for non-techie users. When not working with his team, you can find him caring for his son and gaming.