Question about Toshiba 46H83 46" Rear Projection HDTV-Ready Television

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Infared sensor not receiving


The first symptom was no control of tv with remote control. We bought a second Toshiba remote, didn't work. I have some electronics experience, so I ordered a remote sensor, upon getting part figured out where it goes to find that the original part has four (4) leads.
the new part has only three(3). Virtually have no test equipment(VOM)
I am assuming the problem is on Toshiba board 23599707 or possibly PD1280-1 these are possible part numbers. I could live with this not working but have not determined how to switch from TV to Sat without the remote.

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5 Suggested Answers

  • 1694 Answers

SOURCE: Toshiba 50H82 blown fuse f470

Solder jumper wires for prevent maintenance.....on signal
board = 008,010,017,048,600.............................T.

Posted on Dec 19, 2007

AvioriX
  • 689 Answers

SOURCE: Toshiba 43" 43H70 Projection TV - Remote Sensor not working

It might require a qualified hands on tech. But by my experience remote sensor at the TV side wont have malfunction easily. You can still think about the Remote. You can test remote control by your own. How? You need to have a portable AM radio (MW). while pressing the buttons of the remote control you can move the tuning dial (Remote control should be close to the radio within 5inches). If you hear patterned sound it shows remote control is working. The AM radio method is well known and it has over 85% success rate for all kind of IR remote controls fail isolation. You can also try with known working remote control of other devices to understand the method. If remote control test shows that it works contact to service. Please send new posts if you need further assistance.

Good Luck

Posted on Dec 30, 2007

clusterfx
  • 67 Answers

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

jerryg50
  • 1635 Answers

SOURCE: Toshiba 43H71 - remote sensor not working

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.

Jerry G.

Posted on Jun 13, 2008

  • 668 Answers

SOURCE: Toshiba 52Hm85 shuts down after 40 minutes & goes on and off

Only a few things could make the picture freeze and shut down. I would recommend checking the DVI cable that goes between the Chassis and Optical Block to make sure it is secure and tight. If it is (and it probably is), most likely it is the Optical Block causing the problem.Because of the cost involved, I would have a Professional to come out and diagnose it to be sure.
I hope this helps,
Sky Assoc

Posted on Aug 25, 2009

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Toshiba 43" 43H70 Projection TV - Remote Sensor not working


Here is your manual

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Seems like they you may have sensor problem, remove board and check solder connections and/or replace IR sensor bad pic below of toshiba sensor board below.

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Toshiba 43H71 - remote sensor not working


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.

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Dec 30, 2007 | Toshiba 43H70 43" Rear Projection...

2 Answers

Remote not working.


you answered your own question. yes it is with the receiver on the tv. most like the receiver led it self sounds bad. if you take the little black box apart inside you will see a led receiver and an ic you might be able to find one at mcm electronics that looks about the same.

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