Question about Optoma EP719 XGA DLP PROJECTOR 2000L 2500:1 CONT DVI-D WITH HDCP Multimedia Projector
Projector would not turn on. for a while you could repeatidedly push the power button and it would try to start until it finally started. Now it will not atart at all, and the standby light is not on. I have one of these Optoma 719 in for repair at the moment, which will not turn on at all. Power board checked no obvious burning or anything. Power board is made by that dreadful company Liteon, who make reasonable DVD drives. I cannor even get a power light. Checked power board fuse 4A/250V seems OK 300 volts across lamp socket seems OK. control voltages seem to be strangely absent though i.e 5v 3.3v and 13.5 volts, so which bit of the power board is screwed - ideas anyone
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Posted on Jan 02, 2017
Ok, so forgive me, I'm going by memory. Take the top cover off (4 screws on the side). Take the top silver shield off, look at the screws and only take off the ones you need. It's ok if you take more off, but its just more screws to track. You will need to take off the back outer cover. You will need to unscrew the hexagonal screws that the vga-out port uses to screw the connector to, as these are holding the back plate on. Once you get in, the board you need to look at is on the bottom back. Look for a capacitor that has a rounded top, not flat like the others. You will need to replace this with the same voltage and capacitance. Try an electronics site on the internet to get the right replacement if you cannot find it locally. Sorry for the poor instructions, but its just been too long. As a practice, take pictures as you go (during removal of parts) and you can use them to reinstall. Hope this helps as mine is still working.
Posted on Sep 09, 2008
AS regretable as this sounds component failiure was my first thought .. It's not the bulb temp sensor as the fan is opperating and that usually cuts all power .
You may find that as you have a bulb ( usually worth more than the units they reside in ) rather than a repair another unit of Ebay would be a safer and more economic conclusion ... Regards Vortash
Posted on May 10, 2009
Most problems with the lamps are covered in the manuels for these projectors , however none user technical difficulties are not .. ie where it is needed to open the unit not recomended to the untrained as a screwdiver in the wrong place can cause irepairable harm let alone death ?
To check if it is your bulb simply take the unit to an engineer for an estimate usually free at least you will know whats wrong and can go from there .. and if you do have a working bulb an ebay replacement is probably the cheaper conclusion to your problem ... regards Vortash
Posted on May 10, 2009
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