How To Fix BenQ Projector Lamp Errors? Bonus: Error Light Codes

benq projector looked from front

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What to Know

  • Common BenQ projector lamp errors include a red light indicator, image flickering, and low brightness.
  • Solutions include replacing the lamp, adjusting settings (like SmartEco mode and Dynamic Iris), and ensuring proper lamp care.
  • BenQ projectors have specific error light codes to help diagnose issues, from lamp faults to overheating.

This guide provides proven solutions from users and personal insights to get your projector back on track swiftly.

10 Ways To Fix the Lamp Errors on Your BenQ Projector 

Red Light Indicator – Lamp Is Not Turning On

the lamp indicator is flashing red on the BenQ projector control panel

There is a red indicator light located on BenQ projectors, which helps let you know your unit is having some issues. The red light will flash if:

Issue Solution
The lamp’s lifespan has run out Replace the lamp
The lamp timer hasn’t been reset Reset the lamp timer
The ballast board is broken or damaged Change the ballast board
The central blower fan is experiencing issues Clean the fan

We have an excellent article that dives in-depth into each of these issues and provides viable solutions for each.

Simply follow the instructions in this article and you will have your projector back to 100% in no time!

Image Flickering

There are a few things that could cause your image to flicker, let’s take a look at the most common:

1. Unstable Signals

benq projector ports and an hdmi cable

Usually, a flickering image is caused by unstable or weak signals, a few ways to rectify this are:

  • Unplugging and securely plugging in the AV cable, whether that be HDMI, VGA, RCA, etc.
  • Adjusting the HDMI equalizer in the settings menu: SYSTEM SETUP: ADVANCED > HDMI Settings > HDMI Equalizer 
  • Test to make sure the cable or port isn’t faulty by confirming the connection through another device

2. The SmartEco Mode Is On

When you have the SmartEco mode activated on your BenQ projector, you will use less energy and, in turn, save electricity.

The bulb will not shine as brightly, and the fans will run at a lower speed.

In some cases, the dimness of the bulb will lead to the flickering phenomenon while it’s projecting your image.

Try toggling the SmartEco feature off and see if that resolves the flickering issue.

Here is how you can turn this setting off:

  1. Press the Menu button on your button on a benq projector
  2. Navigate through the menu until you reach the SYSTEM SETUP: ADVANCED tab. In this tab, select Lamp Settings.lamp settings on a benq projector
  3. Set the Lamp Mode to Normal.lamp mode on a benq projector

3. The Dynamic Iris Feature Is Enabled 

BenQ has stated that playing content from your projector with the Dynamic Iris setting on could cause your projector to flicker.

Search your settings for this feature and either turn it off or set it to a low level and see if this fixes the flickering problems.

Here is how you can achieve this:

  1. Press the Menu button on your projector.
  2. Go to the Advanced settings and select the Dynamic Iris option.
  3. Toggle this option Off.
BenQ HT3550 Review - 4K HDR Home Theater Projector (2019)

Low Brightness 

1. The Brightness Is Set to a Low Level

When it comes to problems with your BenQ projector, this is the best one to have. This problem stems simply from your brightness setting being too low.

All you have to do is jump into your settings and turn the brightness to a level that satisfies you. Here is how to do this:

  1. Press the Menu button on your button is pointed at on a benq projector
  2. Shift over to the Picture tab.
  3. Scroll left and right to adjust the Brightness to your liking.brightness settings on a benq projector

2. The SmartEco Mode Is On

As previously mentioned, having the SmartEco mode turned on can cause issues with how your BenQ projector performs, including the brightness.

Switch your projector from SmartEco mode to normal power mode and the brightness of your screen should dramatically increase.

Here’s how to do this:

  1. Hit the Menu button on your BenQ remote or button is pointed at on a benq projector remote
  2. Go to the SYSTEM SETUP: ADVANCED tab and then scroll down to Lamp Settings.lamp settings on a benq projector
  3. Switch the Lamp Mode to Normal.lamp mode on a benq projector

3. Your Lamp Is Getting Old

Your lamp has a lifespan, which usually ranges from 1,500 to 2,000 hours. When half of these hours have elapsed, there is a good chance that your projection will look 50% dimmer.

The older your lamp is, the dimmer it will look.

In this case, you have two options if you want your projected image to be brighter, you can raise the brightness level through the settings menu or completely replace the lamp.

Obviously, changing the brightness settings is more of a quick fix, whereas installing a brand-new bulb should have your projector working like brand new for at least 1000 hours.

How To Extend the Lifetime of Your BenQ Projector Lamp?

When speaking about your projector lamp’s lifespan, there are five factors that will affect it.

  1. Frequency of usage
  2. Air circulation 
  3. Temperature 
  4. Operation
  5. Quality of components

When taking all of these factors into play in regard to your projector’s well-being, there are several steps you can take to extend the lifespan of your projector.

Here are a few things you can do to help your projector out:

  • Use a padded carrying case when transporting the unit.
  • Ensure to mount the projector in a well-ventilated area.
  • If possible, place a fan close by to regulate the projector’s temperature.
  • Periodically blow the dust out of the internal components of the projector with compressed air.
  • Replace or clean filters regularly.
  • When turning your projector on and off, give the unit a rest in between.
  • If it doesn’t affect performance, run the projector on SmartEco mode to save power and preserve lamp life.

If you’d like to learn more about your projector’s life expectancy and the best way for you to care for it, you can check out this article.

Bonus: BenQ Projector’s Error Light Codes

the power and temp indicators are flashing red on the BenQ projector control panel BenQ included error lights on their projectors to help their customers identify and rectify any issues that might arise.

Use this chart as a quick reference guide if you are ever having issues with your BenQ unit.

Power Indicator Temp Indicator Lamp Indicator Meaning
Off Off Red The lamp is faulty or broken
Off Off Red flashing The lamp is not properly installed or is damaged
Red Red Off The fans are not working properly, and the projector will shut down automatically every time it’s turned on
Red Red flashing Off
Red Green Off
Red Green flashing Off
Green Red Off The projector is overheating

Here are some other helpful articles if you have problems with your projector:

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