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.
SOURCE: 10 yr old TOshiba rear
This sounds like poor solder connections at the vertical IC. If this is corrected soon, there will be no other problems. If left as is, the IC will eventually fail. If you can solder, you can fix this yourself. Look for a small flat IC with about 11 pins attached to a heat sink. It will be marked LA7837 or something similar. If you post the model number, I can give you the exact part marking.
Kep me posted.
Dan
SOURCE: my Toshiba 43H71 43 in.
I have a similar Toshiba 42H83 that wiggles like crazy. It started two years ago and keeps getting worse. It first started at the top of the screen and later worked its way down and now the whole screen wiggles.
When I called support they said the part would be around $500 as it is soldered to the inside components and therefore cannot be easily switched out. No onsite technician can do a soldering repair so the TV would need to be brought in or shipped to them.
Considering the cost of the repair being just under half of what I paid for the new unit I did not pursue the repair further.
SOURCE: Toshiba 43H71 Power indicator light flahsing
Bad news folks,
GIVE IT UP! I have just spent 4 hours researching parts for my 43H71 and they are NOT AVAILABLE so even if someone can tell you whats wrong, nobody can fix it. I called TO-SHITBA and asked them, they referred me to 2 suppliers,that are Toshiba parts distributors. They can't even supply a whole motherboard!! All I am looking for is the 3.95 ohm resistor (which by the way is probably what wrong with yours to) that is located right where the power comes into this model, its has a tolerance of .5% that's right a half of a percent. It is not made and you can not buy one, so out of curiosity I asked of they had the WHOLE motherboard........guess what? NO! So don't waste your money taking it to the shop, cause these people are the SHOP SUPPLIERS! I am going to buy a 3.9 ohm resistor with a 5% tol.(five) if it works I will let everyone know. I have nothing to loose at this point, even if it fries the rest of the TV set.......If you are a techie, and have an OHM meter, take the back off and chck yours. Mine is a complete OPEN, I would be curious what yours reads. With that low of a resistance it shout read almost as a short........NOT an OPEN
John
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