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How do I know if the lamp is out or the color wheel

We took out the lamp but can't tell if it is burnt out, how can you tell

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If the lamp is blown out, you will see shards of glass floating around in the bulb. The wires that connect to the glass element in the center will be "disconnected". If the set is less than a year old the bulb is under warranty. All you will have to do is contat the people that sold you the televison and tell them the bulb is blown and do a warranty claim. Good luck!

Posted on Jan 13, 2009

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Jvc x3 projector orange lamp light flashes wont power up

1,Check the fans ,if the fan is running
2,Inductor (Sensing element),near the Color Wheel. Use a cotton swab moistened with alcohol to wipe the Inductor.
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Nov 02, 2013 | JVC Dla X3 3d Projector


DLP TV shuts down

If you find your DLP TV is shutting down intermittedly, it may be just a simple lamp gone bad. Follow your user guide to remove the lamp, check for visible damage or parts that have burst inside the lamp bulb itself, if so, go online to order a new lamp and replace it. Just enter your model number and the word "lamp" into the google search, order it and when it arrives, replace it the same way you took out the old one. Make sure you order the lamp "with housing" which is a little more expensive, but much easier to replace. Good luck!

Best Regards,
Beach TV Repair
Treasure Coast, FL

on Jul 05, 2010 | Audio Players & Recorders


Repair lcd

If the lamp is broken of course - replace it. Otherwise a bad lamp will still light. It just won't be a nice white color. More of a reddish orange, only lit on the ends or flickering just like any other fluorescent lamp. You can, of course, try to measure the output of the inverter but with the loading effect of the meter/scope and the fact that it's a high freq AC output I wouldn't know what to look for. Lamps are only about $10 so that's where I start. Even if it doesn't solve the problem you can still charge the customer, you just tell them there was no sense putting a new inverter onto an old lamp so you replaced it while you were "in there". I personally wouldn't want to warrantee a laptop with a new inverter and a used lamp. If it comes back next month with the old lamp burnt out you'll be replacing it for free under warrantee. The customer doesn't know invertors from lamps so they'll assume because the display went black last time and the symptom is the same that you'll cover it. Lamps and invertors can both be had from JKL through Digikey. The biggest problem with invertors is their physical size and mounting holes. I read the warrantee card on a KDS LCD screen a few months ago, in fine print down at the bottom it said that the lamps AREN'T covered by the warrantee. This means that if the lamps go out while it's under warrantee the unit goes to an authorized service center and they change them but they get to bill the customer for the work. This may increase the revenue of those that are authorized because they will now get paid for a lot more units by the customer instead of KDS but it's also going to make for a LOT of very unhappy customers. I currently get $135 Cdn to change the two lamps in an LCD. We always change both, no cheapskate onsies thank you very much. Lamps are about $10US - $15Cdn ea so labor shows $100 which is comparable to what I used to get for a monitor repair. My advice is to go to the places that sell these and get in touch with the manager, show/explain to the manager that the lamps aren't covered and that if his customers come in with this symptom they will be better served by sending them to your shop for faster service. A lot of the big box outlet stores take the returns and send them off to a depot. This could leave the customer without his unit for up to a week and they'll still get a bill. In the next 5 years a lot of these will be failing, the lamps only last a couple of years if left on all the time. Although I strongly disagree with the idea that LCDs will replace the monitor any time soon (read in the next 10-15 years) I don't let opportunities slip by either.

on May 13, 2010 | Audio Players & Recorders

2 Answers

Samsung home-theater model no# HT-E330K, power supply resistor RA805 completely burnt can't see the value of the resistor. Pls help with the value of the resistor

This may sound like a lazy answer but without a schematic, its going to be tough. Perhaps you know someone...or maybe there is someone here who has the same unit who wouldn't mind opening it up to get the value. Good luck.

Oct 08, 2013 | Audio Players & Recorders

1 Answer

How do you tell if the color wheel or the cooling fan is out

That would be the color wheel. They range from $150-$600. That sounds like the whole light engine could have went out. They can be rebuilt for around 750-1000 bucks.

Jan 13, 2009 | Samsung HTQ45 System

1 Answer

Need color wheel for Optoma EP745. Are any available?

Optoma sells a color wheel, same issue I have. Call 888-942-2929 & ask parts to send you a color wheel. Not sure the cost, BUT I read in another forum they are 89.99.

Dec 18, 2008 | Audio Players & Recorders

1 Answer

Projector won't switch on

You may have a failed power supply or a blown lamp. If you have access to a spare lamp, try changing it. (as described in the user guide). If you know the lamp is good for sure, then it is better to call service folks.

Aug 23, 2008 | Audio Players & Recorders

1 Answer

Optoma EP745 Will not turn on

Got mine to turn on even without the color wheel. The trick is to place the new lamp in and screw down all screws. When replacing the cover besure that the protruding plastic enters on the correct side of the wire switch in side. Tighten the lamp cover screws and do CPR on the center of the cover to ensure the wire switch has moved to the on position below the cover. Plug in the power to see if it works. If not, do CPR with your thumbs on the center of the lamp cover again. Usually this will fix it.

Oct 31, 2007 | Audio Players & Recorders

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