Question about Televison & Video
I have a Toshiba 40WH08B back projection TV. A recent problem has developed in that when I turn the TV on, a protection circuit cuts in and turns the set off. Red power light stays on and the green timer light flashes. I have found that if I remove the connector marked red from the board with the 2 large heat sinks, the TV will turn on but with obvious visual defects due to the lack of the red gun operating. If I then turn off and plug back the removed connector, the TV will work fine for a day or two before the problem returns. Any Help would be much appreciated. I have the service manual. Regards Kelvin Harley
Protection circuits usually cut in when you have power supply issues and too much current. U might want to start checking out your power supply for bad components.
Posted on Apr 09, 2017
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: Hitachi 50EX20B Bigscreen TV
You can download a PDF from here: http://www.servicemanuals.net/results.aspx?type=SM&brand=0&model=50EX20B Make sure that the coolant is not leaking out onto the printed circuit boards. i have had the remote sensor cause this problem before and also I have had bad capacitors in the sweep and the main power supplies. Good Luck
Posted on Jun 14, 2007
Solved by resoldering some solder joints!!!!!!!
Toshiba Model 57H81 Rear Projection TV - Purchased 11-09-2001
Problem: Toshiba 57H81 Flashing Red Power Light, No Picture/Sound, Blown Fuses F850 + F852
Symptoms January, 2009:
Total Cost to Repair about $10
Posted on Jan 05, 2009
Sounds like your convergence chips have failed. This is a common problem. You can get a repair kit from www.TvRepairKits.com .
Posted on Apr 11, 2009
Tips for a great answer:
May 21, 2009 | Toshiba Televison & Video
Dec 27, 2007 | Toshiba 40H80 40" Rear Projection...
Mar 10, 2009 | Toshiba 57H81 57" Rear Projection...
Mar 02, 2009 | Toshiba TP55F80/81 55" Rear Projection...
Jan 18, 2009 | Toshiba TZ43V61 43" Rear Projection...
Dec 01, 2007 | Toshiba 50H81 50" Rear Projection...
Mar 18, 2018 | LG Televison & Video
67 people viewed this question
Usually answered in minutes!