Question about Toshiba 57H93 57" Rear Projection HDTV
Remote control commands from the remote that came from the 57H93 and a generic one has stopped working. The tv has been gradually not been picking up or reading the remotes for longer intervals over the last couple of months. The ability to read the remotes came back after a couple of days, but it did not come back this time. I have replaced the batteries on both remotes and they turn on the dvd player, stereo, vcr, etc. with no problems. Looks like the remotes are good and something is wrong with the tv. I have removed the screen before to clean out the spiders and spiderwebs. There is a board behind the 3 projection tubes that appears to be the remote control sensor board. Has anyone replaced one of those before? Does anyone know its part number and where I can get one? Would like to try to replace the board if it isn't too much money. Calling someone to service the tv will be expensive. Does anyone have the service manual and/or schematic for a Toshiba 57H93? Thanks!
SOURCE: Remote not working.
ctf: thanks for the tip. however, im not sure i have the skills to do that, or even know what to look for. when you say "black box", what are you referring to? Cheers.
Posted on Dec 25, 2007
SOURCE: TV remote control sensor
yeah,it's very easy.
pull out the bottom part(where the speakers are) - they are held with plastic hooks on the inside, they are =on the left and right side and a few at the top. just pull one end and the rest will come off easily.
remove a couple of screws holding the buttons assembly and the bottom of the screen.
slide the screen carefully upwards and when you reach about half way then it will come off.
behold...the sensor is infront of you, it's a small pcb with a light sensor on it. (if you see sensors at the very top or side...they are probably focus sensors)
sure it's not the remote?
Posted on Feb 23, 2008
The sensor is not the only fault that can cause the remote control to not work. The sensor is only one part of the circuits involved.
Between the sensor, there may be buffer amplifier stage, and then there is the main uPC.
What we do is send a remote IR data signal to the sensor, and on the circuit board in the set I follow the data signal along its path using a scope in reference to the service diagrams to see where the data loss is.
Personaly, I would not blindly buy a new sensor based on a guess without doing the proper tests.
Posted on Jun 13, 2008
You need to program the remote to work with the TV. And I hate to point you this way, but I've looked around for the manual on this remote, and can't find it, so, go to the Toshiba website and email Customer service that you have lost your manual for the remote. See if they will email you one. I bet they will.
Posted on Jan 31, 2009
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