Showing posts with label projector. Show all posts
Showing posts with label projector. Show all posts

Projector Causing the electric breaker Tripping

I have a real experience about a projector that is when the power cable plugged into the electric source will causing the electric breaker tripping suddenly and we cannot reset this without unplugging the power cable of these projector. This is a DLP projector with the brand Infocus.
I have repaired this projector and found a component that broken that causing this problem happen. The steps we have done are below :
1. Open the case of the projector
2. Take out the mainboard
3. Take out the lens to access the power supply board
After we can access the power supply board we need to check several electronics component.
1. Check the main diode. I think you have enough knowledge about checking the electronics component. In this experience, the main diode is in normal condition
2. Check the mosfets that placed at the primer area of the power supply.
3. After all dove i found a mosfet that shorted. This is a mosfet near of the balast port. Each legs have shorted between one and other.
Finally, after replaced these mosfet make the projector normal and the electric circuit breaker not tripping when the projector cable plugged into the source. You can watch the following video about all the steps above.
This is the way to fix a infocus projector that is causing the electric circuit breaker tripping suddenly just when the power cable of it plugged.

Repair Sony Projector Blur

To repair the sony LCD projector that is the image of the screen has blur after few minutes please to follow the following steps. This mean after the projector working and the temperature have risen the image will blur.
The steps to fic this problem is below :
1. Turn off the projector by pressing the power button ( according the type of the projector )
2. Release the power jack cable from the electrical source.
3. Look for the ventilation unit and take out the filter of this.
4. Clean the ventilation unit using the brush until all dirty gone. To do this step you can place the filter in front of the lamp to know that the filter have clean.
Repair Sony Projector Blur

5. Re-assemble all ventilation part unit and try to turn ON the projector. Leave the projector working for more than 1H to know that this action success or not.

As we have done, the action and steps above will fix the Sony LCD projector that is it's image has blur.
Over Voltage Will Harm This Part of Projector

Over Voltage Will Harm This Part of Projector

Two electronics components will broken if we plug the over voltage source to the projector. Over voltage is the voltage that higher than the rating of the projector. For example the projector need 220V but we plug 380V, or need 110V but we plug it 220V.
1. Fuse, this is a small part that working as a protector of the over current. When the voltage of source higher than the rate so the current will higher too and this will make the Fuse broken. If this part not broken, so the main controller of the power supply will broken and this problem need more dollars.
2. Elco, electrolytic capacitor. This component will broken if the Fuse not broken soon.

So, if you miss plug into the projector the higher voltage source and make your projector broken you should check the two parts above.