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internal power +dc generation problem.Check SMPS and other circuits. feed back circuits. Check opto isolator which controls SMPS out-put. Contact service center for assistance
This is probably a cold solder joint on the bottom of the chassis. I would look at the Vertical IC first, then Convergence IC's. Then look over the entire board.
Your set has 3 screens:
FA812 SuperShield is no longer available
23837472 Lenticular lens is no longer available
23837450 Fresnal lens is also not available.
Check with some of your local TV shops. You may find a non-working TV with good screens for sale.
100 volts is too low to power the entire projection TV. Usually with rear projection TVs there are three tubes that create your picture on the screen. To power those tubes, they each require a high voltage (usually around 10,000 volts - yes ten thousand) that is produced by a high-voltage step-up transformer call a 'Tripler' - since it powers all three tubes. This device and the rest of the TV require full utility voltage (120 - 130 volts AC) to properly power the unit. Correct the voltage and try again - is the house / residence voltage like that in each room? IF so, you probably have other issues with devices you probably haven't picked up on.
http://www.tacp.toshiba.com/tacpassets-images/models/tp50g50/docs/tp50g50_om_e.pdf
Your alignment is off. Go to the set up menu then convergence. hit right and you will be in the convergence menu. select the color that is not in alignment. The green line does not move. if blue and green are lined up the line will be cyan. if red and green are lined up the line will be yellow. when all three are lined up the color will be light. Best of luck!
Sounds as thought you have a dead B+ from the power supply board. Replacement of the board should be a certain fix. The power supply could be fixed with the help of a good service technician. I hope this has helped.
Ed
NC Electronic
Mills, Wyoming
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