Question about Toshiba 57H81 57" Rear Projection Television
I changed out the IC's, and one pecos fuse. I turned on TV and everything was perfect. Ran TV for about 2 hours, then went to bed. Next morning turned on TV and nothing. An attempt to start up, could hear relay kicking in and then got a continuous red flashing led light from power on led light on front of TV. Checked the pecos fuse and replaced , it went out. Powered up TV, Transformer fired up, relay engaged. Guns never engaged and pretty quickly could smell something burning, disconnected the power from the board and lokked for burn outs. Couldnt find any sign to reveal what burned out, Connected power to board and get No power to flyback transformer or main transformer. Get a start up power for TV, minus the firing up of guns and a solid red led light at front power led light on TV. Trouble shot the power failure to what is a photo coupler, but not sure if that the problem. Photo coupler is ET1103. Any ideas on what my problem is. Thank you Sunny
You need to check the 1.8 ohms resistors 2watts, the horizontal output transistor.make sure that the ics that you replaced and the fuses are the exact rating that were on the original
Posted on Jan 24, 2009
IF YOU REPLACED THE SAME PICO FUSE, YOU PROBABLY HAVE A BAD CONVERGENCE IC AGAIN . DID YOY SNUG UP THE IC TO THE HEAT SINK AND USE THERMAL HEAT COMPOUND ON THE NEW IC'S? ALSO CHECK SOLDER CONNECTIONS TO C810 AND C809 THE FUSE BY THE CAPACITORS MAY BE OPEN.
Posted on Jan 23, 2009
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
Tips for a great answer:
Oct 11, 2012 | Sony KV-32S26 32" TV
Feb 18, 2011 | Toshiba 57H81 57" Rear Projection...
May 20, 2010 | Toshiba 27DF46 27" TV
Jun 19, 2009 | Toshiba 57H81 57" Rear Projection...
Aug 25, 2008 | Toshiba 32A33 32" TV
Oct 29, 2007 | Toshiba 57H81 57" Rear Projection...
Nov 09, 2006 | Sony KV-27V22 TV
Feb 12, 2014 | Toshiba 57H81 57" Rear Projection...
256 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: