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Sorry for the late reply, I'm offline upon purchasing my service. You have said that you can hear a low buzzing sound before the unit gone to subsequent shutdown and the lamp blinks green(meaning that the unit try to turn on the lamp for consecutive attempts but not generally mean that the lamp itself is faulty.) and the temp led light come on.
As a matter of fact all the information you have mentioned linked to the symptoms you've encountered right now. A low buzzing sound might be caused by faulty FAN inside the unit that trigger the error code (blinking of the standby/temp led light) and turns off the unit automatically due to thermal protection circuit. However, the technician might be true also that the buzzing sound came from the faulty color wheel. To confirm it, you have to verify where the buzzing sound came from. Color wheel is in front of the lamp assembly. Faulty color wheel can produce the same symptoms you've encountered right now but most of the time, it shows 3 blinking led light at the front panel (Timer, Lamp, standby/Temp).
I would advice you to open the back cover of your unit, fixed the lamp door safety switch with the tape to make it in closed position( if it is on open position the unit will not power up), and then turn on the unit and observe the fans if will spin or not, and check also where the buzzing sound came from before the unit gone to shutdown. I've suspected that the fault came from the fan based on the led light flashes. Please let me know what you will discover after following the steps above to verify where the exact fault came from. Also, let me know the exact status of the led light at the front panel, (Timer, Lamp, standby/Temp ), which of them lit solid/blinking, it will help us to narrow the caused of the symptoms.
if you hear chirping or a loud buzzing, you have a bad colorwheel. the lamp won't turn on if the colorwheel doesn't spin as fast as it needs to. if you don't hear anything like that, you need a new power supply. the lamp striking takes a lot of power, and if the power supply can't handle it, it shuts off. you can get the part from an infocus service center and replace it yourself, or send it to them for repair. either way, try av solutions in ny. they're really good. www.avsolutionsny.com
Ur colors wheel is dead,must call tech.for this is very difficult to take out,and replaced have no tv tech. experience.Best to call tv shop service,to replaced this colors wheel,and have warrenty on it.
Check the Lamp if no picture, audio may be present. Screen is completely dark. Lamp LED
flashes 2X every 5 seconds, Power LED flashes GREEN for 140 seconds then
flashes RED. Check the ballast if no picture, audio may be present. Screen is completely dark. Lamp LED
flashes 3X every 5 seconds, Power LED flashes GREEN for 140 seconds then
flashes RED.
Hello! Lamp or ballast(if lamp has been replaced) is bad. Explanation: green comes on: system works, waiting for light to shine into light engine: no light is coming out of lamp, system shuts down, then you see red! how to determine: pull the lamp out of the unit's compartment. Inspect lamp: bloated stem? shuttered? reflector is not shiny? Chuck it! Lamp looks good or just been replaced: try ballast. Close lamp compartment without lamp itself. Make sure, door is shut, as well. Turn unit on and listen close to lamp compartment: good ballast will make a buzzing noise, then stop. You've got "red'! No buzzing: ballast quit. Needs major repair! Lamp must be good, for sure, to get to the last part of diagnostics. Conclusion: more, than 2000 hours of usage: replace lamp first! Good luck, Alex.
2) listen to hear the sound of the ballast board trying to ignite the lamp. It will buzz then pause then buzz, etc its a soft noise, so listen closely.
3) watch for the green LED on the TV's front panel. If it blinks continously, there's a major problem with capacitors on several circuit boards requiring an expensive and time consuming repair.
our 62hm15 had the same problem and it was the dmd fan, which means the whole light engine needs replacing. this was going to cost us $1600. I hope yours is under warranty
The buzzing sound you most likely hear is the ballast trying to fire up the lamp. I would say replace the lamp and yes they can act up at will. If this is the first lamp replacement ever then you are doing good.
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