Question about Mitsubishi WD-62327 62" Rear Projection HDTV-Ready Television
Trying to fix my son's Mitsubishi WD 62327 TV. Lamp burned out (shattered glass in bulb), and he bought and installed a replacement. New bulb doesn't light up and TV has no sound. When the power button is pushed the "Timer" light comes on as a steady green for approx 80 seconds, it then goes out and a blinking green "Lamp" light comes on for approx 60 sec; it goes out and a steady red "Lamp" light comes on and stays on. I measured the voltages on the power supply board at connector PA and got 5V at pins 1 & 2, and 10.7V (not 12V) at pin 4. All indicators are that the new lamp is bad, but the supplier says this is highly unlikely. Is there anyway to verify if the lamp is good or not? If I know for sure that the lamp is O.K., it would give me alot more incentive to try to find the circuit problem. Any help would be appreciated. Also, I did the tv built in trouble code action by simultaneously pressing the menu and input buttons and got a 34 code which is translated as "lamp abnormality".
Yes this is the signal for a bad lamp. Other things can cause this. 1. Look at the new lamp. make sure it still looks good. not broken with little glass pieaces in it. 2. When you turn on the tv, put your ear to the lower back part of the tv near the middle. Listen for the start up of the color wheel (a low high pitch sound only at the start up of the motor). If this is good you will here a ticking sound only if the lamp dose not light.
Now with all this info. If the lamp lights (as seen from the back of the set) and goes out after a few seconds and you did not here the color wheel spin up, the color wheel is bad.
If you here the color wheel spin up and no ticking sound, the Ballast is bad.
The ballast part no. 939P978010
The color wheel is not avialable from Mits. You will have to replaced the light engine. It cost to much. Just buy a new tv.
My best gess is the Ballast.
Posted on Nov 15, 2008
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Posted on Jan 02, 2017
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