Top 10 Projector Problems & Troubleshooting Guide

Projector ProblemsJust Projectors always suggest buying a projector that comes with a good 3 year warranty for peace of mind. Our top 5 Manufacturers for supplying good warranties are; Optoma, Viewsonic, BenQ, Mitsubishi & Hitachi. When the warranties have run out, you may not face any problems, however if you do, you will want some advice on the most common things that can go wrong on your projector. Here is a list of what we consider are the top 10.

Top 10 Projector Problems

  • Colours distorted on the image
  • Lines / Dots on the image
  • Projector overheating
  • Projector turning on then off straight away
  • Projector on but no image
  • Shadows appearing on the image
  • Dull image being produced
  • Projector inputs not working
  • Colour around the edge of the image
  • Lamp door switch broken

Projector Problem 1 – Colours from projector distorted on the image
There are a few reasons why this may be occuring, the first thing to check first is your projector cables, the best thing to do first is to change these to see if this fixes the problem. If not, the problem may lie with your colour wheel / main board.

Projector Problem 2 – Lines / Dots on the image
This is a problem caused by the projectors main board. When there is a problem with the main board, it may be worth considering comparing the cost of getting a completely new projector rather than buying the main board.

Projector Problem 3 – Projector overheating
This is quite a common case & is quite distinctive. It is usually caused by a problem with the fan. If there is no noise then that means the fan will not be working any more to help cool down your projector. Other things to look out for are making sure that you aren’t leaving your projector in very bright direct sunlight as this obviously won’t help the projector cool down.

Projector Problem 4 – Projector turning on then turning off straight away
There are a number things to look out for. The first thing to check is your power supply and make sure that all of your cables are in fully working condition and connected properly. After that, it would be worth checking how dusty the projector is, this may occur after a long period of time. This would mean having to service your projector.

Projector Problem 5 – Projector on but no image
If you can get your projector to turn on but then get no image, make sure that the cables that you are connecting with are connected correctly. If this is all OK, then it most likely you have a problem with your lamp ballast unit or the lamp itself. The lamp ballast unit is what provides power to the lamp. If the lamp ballast unit goes, then most likely the lamp will usually go as well. Price varies on these units so your projector would have to be taken in for an assessment.

Projector Problem 6 – Shadows appearing on the image
This problem only applies to DLP Projectors. This yet again could be a problem with the projector’s main board or it could be a problem with the mirror. The projector would need to be assessed to find the full extent of your problem. A mirror for your projector would be a reasonably cheap repair but again with the main board if that is the problem, it would be worth considering buying a new projector.

Projector Problem 7 – A dull image being produced
This problem only applies to LCD Projectors. All projector lamps will have a certain lamp life varying from model to model. If the image is starting to get more dull, it would be worth thinking about getting a new bulb. Some projectors will tell you how many lamp hours have been used to date, if not you may have to have a think and estimate how long you’ve been using the projector for. If you think it is near the estimated lamp life of the projector, then it may be time to enquire about buying a new projector bulb.

Projector Bulb sales: 0800 027 7785 / 01189 070703

Projector Problem 8 – Projector inputs not working
If your inputs are not working on your projector then if after you’ve double checked your inputs are connected correctly, this problem is related again to the main board. For a definite price on the real cost of this, you would need to get it assessed by a projector repair centre. For Just Projectors repairs department, find the direct dial at the bottom of this top 10.

Projector Problem 9 – Colour around the edge of the image
This may occur on LCD projectors if the LCD prism becomes faulty. An LCD Prism is an expensive component on a projector and should only be thought about if absolutely necessary, in most cases it may just be best to look at buying a new projector.

Projector Problem 10 – Projector Lamp door switch broken
This is quite a minor problem to resolve. A new interlock switch for the projector lamp will generally be quite cheap. Find details below for more information on Just Projectors full range of projectors, repairs department direct dial & the phone number for general projector enquiries.

Repairs direct dial: 01189 070709

General Projector Enquiries: 0800 027 7785 / 01189 070703

Projectors & Lamps: Find our full range here

See our Projector repairs page: Projector Repairs

Author – James Tyrrell | Just Projectors |

2 responses to “Top 10 Projector Problems & Troubleshooting Guide

  1. Hi there friends, its wonderful article regarding teachingand fully defined, keep
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  2. Pingback: Troubleshooting Technology – Post #1 | Alex B. Criswell

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