Question about Mitsubishi WT-46805 46" Rear Projection Television

1 Answer

Wt 46805 wont start up

Tv wont power up green light comes on and clicks then goes off the fuse by the plug is good. tv is 7years old and has worked great since 2000. what should i do

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  • Tonedef Dec 09, 2007



    Same thing happened to me this morning. Won't power up. Clicks on, then clicks off. Know it can;t be something big, hoping someone that's worked on this before knows the fix vs trying to debug. Any help would be appreciated. Thanks.

  • drussell Jan 05, 2008

    Same problem here.....Tv clicks on and then off again...this is the third different tv ive had this happen to and second different brand. Can someone please help with the cause and solution????

  • DTECH1521 Feb 14, 2008

    I have a similar issue where I power the TV on and I hear a click but no LED. It is addressing to the Dish Network remote and as I power it up I hear the click but no video or audio or LED indicator... Any suggestions?

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  • Master
  • 927 Answers

Good Day, you'll;

Try the following:

NO POWER. NO RELAY CLICK 1. CHECK FOR 5 VDC AT PIN 9 OF IC700 (AC-OFF) IF MISSING CHECK PC901 PART # 268P058020, ON THE POWER PCB. NO POWER. RELAY CLICKS 1. CHECK Q501 (261P071010), Q502 (260P561020) AND Q503 (260P788010). IF ANY OF THESE TRANSISTORS ARE SHORTED OR LEAKY REPLACE IT INSURE THE FOLLOWING CIRCUIT CHANGE HAS BEEN DONE. REMOVE J58 FROM THE PCB-MAIN. USING AN INSULATED JUMPER WIRE, SOLDER A 22 OHM 1/4W RESISTOR BETWEEN PIN 4 OF THE RELAY K9A30 AND THE J58 HOLE NEXT TO PIN 1 OF CONNECTOR DQ. DRESS AND INSULATE THE JUMPER AND RESISTOR TO PROTECT AGAINST SHORT CIRCUITS. INSTALL A .01 UF 50V CERAMIC CAPACITOR BETWEEN THE COLLECTOR OF Q510 AND THE GROUND LEAD OF R502. CHECK CONNECTOR "DR" FOR PROPER CONNECTION, BETWEEN THE DEFL MINI PCB AND THE MAIN PCB. 2. CHECK C5A09 AND C5A50 BOTH 33 UFD 50 V OFF OF IC5A01 ON PCB-DEFL MINI. 3. CHECK FOR LEAKY IC5A03 PART # 270P704010 ON PCB-DEFL MINI 4. SUSPECT THE HIGH VOLTAGE BLOCK PART # 920P016010.

Good Luck, big IRISH.

Posted on Jul 25, 2008

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hi,

try unplugging it and thn plug it back if the light comes for 3-5 sec. and goes off thn you will hear another click noise when it goes off. you never get a picture or sound.If im right thn there are several circuits in the tv that might cause this. the most common are the power supply and the convergence circuits. a cost of a repair for either will range around $400.00. this is a great model and well worth a repair.
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