Question about Toshiba MD13N3 13 in. TV/DVD Combo

Remote control issues

I have searched the internet looking for a solution to a problem that seems to plague more than one consumer. Remote works erratically for some time until it quits all together. I think others as well as I have concluded that the remote itself is not the problem. So the problem has to reside in the ir sensor on the tv itself. So far in my quest to find an answer I have come up blank. Sure I have seen some experts address the problem but not one has done so with the authority of real knowledge. Guessing does not get us closer to the problem. So if there is any experts out there that feel they have a legitimate fix, by all means shoot the works. As I said earlier, the problem is affecting many Toshiba TV/DVD combo's. Common problems in like equipment usually has a common fix.

dddee Nov 28, 2007

My remote stopped working. I can change channels, etc by pressing buttons on the set itself. Put new batteries in the remote twice with no result. Checked the remote as instructed by www.replacementremotes.com and the remote seems to be working.
davidschiele Jun 18, 2008

I am having trouble getting a consistant signal to the IR sensor on my cable box from my harmony 550 remote even with the recently purchased extender.

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3,130 Answers

Yes it is a quessing game. If we experts do not have the set in front of us to trouble shoot, but I will explain the process. First off to work on any tv set, your going to need a schematic diagram or should have one, or it will be a crapshoot. Next set up your osilliscope and multimeter. First check the B+ going to the IR sensor. If its at 9 to 15 volts, and is clean without distortion, Im thinking that is ok, but check the manual to see what it is suppose to be. Once the B+ is confermed good. Place the scope probe to the data output on the IR sensor while pressing a remote funtion. If the date is clean looking and is present then the IR sensor is good. If it is not good or noisy, replace the IR sensor. In the event its there, trace the data signal with the assistance of the schematic diagram, to the microprocessor, through all the jumpers and plugs and componets, like coupling capacitors or resistors, as I have found bad solder connections on the route to the microprocessor. If the same data signal is on the input of the microprocessor remote input, that is on the data output on the IR sensor, then replace the micro. This way of troubleshooting, has in the past, fixed every remote problem I have encountered with a remote intermittant, or no remote operation. Good Luck

Posted on Oct 08, 2006

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