Question about Mitsubishi VS-50603 50" Rear Projection Television

1 Answer

Won't turn on

My mitsu vs-50603 manufactured in 12/98 will not power on. the green light on the front panel is on all of the time. nothing happens when power is pushed on set or remote-----no sound or noise from the set at all.

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  • srainess59 Jun 18, 2008

    Same thing here.. Was told to contact local technician from Mitsubishi. Green light is always on. Unplugged it, etc....

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  • Master
  • 927 Answers

Good Day, Check these two areas: 1. CHECK IC700 PIN 4 (AC-OFF) FOR 0 VOLTS DC, IF HIGH, CHECK FOR LEAKY D980 PART # 264P045040 ON THE MAIN PCB. 2. CHECK FOR 4.7 VOLTS DC AT CONNECTOR RF PIN 3 AND 4 ON THE SIGNAL PCB IF LOW SUSPECT PROBLEMS WITH THE SWITCHES/BUTTONS ON THE CONTROL PCB PART # 935D394001. 2). CHECK FOR 10 VDC AT PIN 5 OF IC502 OF LOW, CHECK IC503 PART # 270P704010 ON THE MAIN PCB. 2. CHECK R529 .82 OHM 1/2 WATT OFF PIN 4 OF THE FLYBACK. IF OPEN CHECK C411 2200 UFD @ 35V AND IC 451 PART # 270P064020. ON THE MAIN PCB. Good Luck, big IRISH.

Posted on Aug 31, 2008

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Good Day, jessayala;
It sounds like you may have Ethylene Glycol on the boards, leakage from the TV's CRT's. The Glycol is a fluid that help's the tube cool. If you are not handy, very, very handy, I would call an Authorized Service Center to come out and give you an estimate before the repair is performed.

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Good Day, wecalvin;
Suspect fluid on the PCB's.To find suspected liquid on the PCB's, remove the front speaker cover and the small board held on by 5-6 screws. Look at the first 3 to 5" on the PCB. Use bright light it's not always easy to see. If fluid is spotted remove the boards from the back of TV. Use small brush, like old tooth brush, and acetone. You can get acetone from hardware stores
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