20 Most Recent Mitsubishi WD-65C9 65" DLP HDTV - Page 6 Questions & Answers

May mean the DLP chip is either not getting the proper level of black signal until the controller board has warmed up, or the DLP chip itself is not completely responding to the controller signals. After thoroughly warming up the problem goes away. This is a sign of aging of the parts. Diagnosing and correcting that type of problem is a challenge. Regards.

Mitsubishi WD... | Answered on Jan 05, 2016

Sounds like cooling fan is not supplying enough air to the lamp. When it gets too warm, the controller will perform a safety shut-down. Clean and lubricate both of the cooling fans. One is a squirrel cage type and the other is a pancake type. Make sure the filters are clean and all dust is vacuumed from the lamp chamber. Make sure both fans turn easily. Regards.

Mitsubishi WD... | Answered on Jan 05, 2016

Never heard of a color wheel needing to be replaced. Both cooling fans need to be clean and turn easily. Color wheel fan needs to turn easily. If any one of these motors does not turn, the controller will cause a shut-down. The Xenon lamp uses high voltage to operate. If the power supply was damaged, the lamp won't light. The sparking on the ballast board indicates that dirt or dust may be causing the problem. Also, the clamping diodes and regulator may be defective. If possible, try replacing the lamp power board. Regards.

Mitsubishi WD... | Answered on Jan 05, 2016

Not uncommon for the fan to stay on for a few minutes after the set is turned off. It is designed that way and then supposed to shut down after a few minutes. If it does not then that circuit is defective.

U can always throw a switch in series with the fan and shut fan off after you turn set off. Or if you wanna be fancy you can rig up a relay setup that will turn the fan on/off as you do with the tv.

Mitsubishi WD... | Answered on Nov 13, 2015

Hi Kenny
Being a projection device... Which most TV's aren't ...
You need to break the fault down into the Projection Section or the TV Section.
Or Power Supply Section
Projector bulb blown, overheating etc.
Power supply sensing overload or fault then automatically shutting down.
TV Section may be OK
small internal LCD screen is projected by lens.
Check internals.
Happy Troubleshooting

Mitsubishi WD... | Answered on Nov 03, 2015

Cooling fan gone and cutting out on overheat? These projections televisions are so old tech :>)

Mitsubishi WD... | Answered on Oct 14, 2015

not the lamp. Its a known issue with the power supply. Bad capacitors usually. this requires a servicer to repair it.

Mitsubishi WD... | Answered on Oct 02, 2015

press the power button onthe front. if nothing happens please post back with what indicator lights are flashing and how many times they flash. Be sure the lamp door is secure or it will not turn on.

Mitsubishi WD... | Answered on Oct 02, 2015

The Ballast plug melted due to age of the TV. as the plastic gets old it gets brittle and can crack with barely any force. The pins then do not seat and the arc that should be in the lamp takes place in the connector. I have seen this so many times. fortunately it is very easy to replace the connector is you know how to use wire crimps and can source an old female plug. eBay is a good source. you can buy a used ballast from any model that has the same connector. Then cut off the new plug and splice it onto your old wires with but-crimps and shrink tubing.

Mitsubishi WD... | Answered on Oct 02, 2015

You are going to ruin the optics using a Xenon lamp. The ballast in the TV talks back via UART to the CPU. By removing the ballast the TV cannot talk to it and run itself properly. Also using a xenon lamp will give terrible color reproduction as its not putting out nearly enough lumens in the right spectrum. It will also bombard the color wheel and DLP chip with UV light and ruin those as well.

Mitsubishi WD... | Answered on Sep 15, 2015

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