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We have a Canon LV 7230 digital projector. The last time it was used it seemed dim and yellow. Went through color correction and couldn't correct the problem. When the unit warms up, it seems much dimmer than usual and flickers even beyond the normal warm-up cycle.

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  • chris114 Oct 03, 2008

    The projector is used to project slideshows as a second monitor of an iMac computer. We went through the color adjustments. Adjusting brightness caused highlight blowout and were not able to remove yellowish cast. The color of the computer monitor is unchanged.

    I suspect the projector has a problem because it takes longer to warm up and flickers beyond the normal 20 second warm-up cycle. The bulb replacement light does not light.

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Hi,
Please click on the below link or copy the URL and paste it in your web browser..
http://www.aboutprojectors.com/Canon-LV-7555-projector.html
As for as i know every projector takes some time to initialize.. So please wait for some time to settle itself.. If problem occurs again, Don't switch it on for whole one day.. keep it in observation.. because of high usability it might cause the problem.. Next day you try switching on and adjust the brightness and color and also the zoom. these three measures must be in equal numbers. Then only the picture will be visible.. To need more assistance please contact canon customer service by clicking on the below link..
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=246&modelid=11237

Hopefully it should work.. Let me know please..
Thank you....

Posted on Oct 03, 2008

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Hi,

The flickering is normally a Signal issue......

Pay attention to your LED status lights. If JUST the image is flickering and the rest of the status lights look normal it can narrow down the issue.

It maybe your signal in, check your connections, wiggle them, all that good stuff.
It may be a bad connection, explaining why everything seems normal on the projector end of things and the image 'flickers' because its signal is broken.

Check the length of your run. Check the cable and the connections on either side.

Waiting for your response......

Posted on Oct 03, 2008

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Chris, if you have not done this, please look for the "Reset" button at the back, right between the "RGB in-1" / "component in" and the "service port", just press it using a pen. the projector will restart after doing so, this will make the projector perform a routine correction on the its settings.


isolation.

have you tried connecting the projector to another computer or media and had the same effect?

if it does not then try to do color correction on the current computer that you have, the iMac, get it connected to another monitor, then perform a color correction on the iMac, not the projector.

Using a different media: aside from the computer that you have been using, have you tried to connect the projector to a DVD player perhaps and see if it will have the same display?

The link below will ive you the manual for the projector for future use.

http://www.fixya.com/support/p189227-canon_lv_7230_multimedia_projector/manual-10235

Hope this helps. If you have other questions just lemme know...

Posted on Oct 03, 2008

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The power circuitry that sets the color temperature, stated in Kelvin units, is malfunctioning.

For a PC monitor there are two preferred color temperatures 9600K and 6300K. As you may imagine, the higher number is brighter. Some Photoshop users apparently prefer the lower number. However, those I know who work in the magazine industry have special monitors and light guards to do their work on.

In any case, I hope you are still under warranty.

You will want to telephone, avoid the web, the corporate offices for your maker. From their home page select the Contact Us link. Jot the office number down and phone them up.

You need to ask for the RMA department. If you get feedback that you've called the wrong number etc. don't worry, just insist they give you the RMA phone number. You're more likely to get a direct line in to this. Don't relent, but do note that some companies can only issue a number if you use a web form. Should that be the case, have them email you the url to the form.

RMA stands for Returned Merchandise Authorization and each number assigned is entered in a database as the calls come in and has your contact information and Model, Product and Problem listed. Once, you have RMA on the phone and they get this information from you, they will give you the RMA number and a unique address to send it to. This RMA number must be on the box below the address for the RMA dept when you ship the product back. The standard practice is that you pay to ship it in, they pay to ship it back.

So, call corporate and insist on the RMA phone number, you should get a direct phone number.
You may have to use a web form though so have them email you that web address for the form.
When you speak to the RMA department describe your problem just as you have here.
Get the RMA number and do not loose it. Get the RMA dept address.
Ask for the expected turn around time. Often they send you a new unit or a refurbished one, rarely is it the same one you sent in.
When you get the replacement put it to use right away and don't wait. There is a dead on arrival time period you have to respond within. So don't put testing the replacement off.

Hope you have good luck. Ask me if I left something out.

Regards,
Worldvet

Posted on Oct 03, 2008

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Common cause of projector output issue (color changes, brightness, etc) is the lamp but,

changing the lamp nor resetting or trying different settings at the control doesn't fix the problem, you pretty much covered the basics in projector troubleshooting. the projector unit is faulty.



Posted on Oct 03, 2008

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What causes a projector to warm up slowly is a bulb that is getting bad already, so I will advcie you to replace the bulb of this projector and that should fix the problem...

Hope that helps........

Posted on Oct 03, 2008

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It sounds to me like a capacitor problem. Generally when there is an issue with warming up its because a capacitor has gone stale in one way or another. Giving it time to warm up allows the electrolytic solution to free up and the unit can operate close to normal. Things to look for when looking for a bad capacitor would include one that is vented, on the top or bottom, puffed in any way shape or form, or one that has spewed its fluids onto the circuit board. Theese visual signs are some of the best giveaways. A good capacitor will look just like any other on the board, if you question one for any reason, change it.

Posted on Oct 03, 2008

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Take off the electric plug for about couple of minutes and turn it on after. if still persist then it must be the hardware of your tv got a problem. see also the settings of your projector for an adjustments.

CHARCOIS

Posted on Oct 03, 2008

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