Panasonic TV Remote - repair

Hi,

I have been trying to fix a Panasonic TV remote, Did some of basic checks like cleaning up the remote, soldering the contacts.
It worked with this fix but after a day or two stopped working, changed to new batteries, then it work.
What I found that Remote works fine with new batteries, but the batteries wont last long for a day or two,
It looks like the battery getting drained off even though the remote is not in use.

Is there any switch that between battery and circuit board to cut off the power if the device is not in use.

Thanks
Venky

It sounds like one of the buttons has failed and is on constantly, causing the uC to run constantly. You might be able to verify this by pointing a digital camera at the remote's LED and looking at it on the viewscreen, because most cameras can "see" the IR wavelength of most remotes..

ak

A fairly common failure in remotes is the reservoir capacitor (the 'big' electrolytic on the board). This can go leaky, which drains the batteries - or it can go O/C which drastically reduces battery life - the capacitor provides the high current pulses required, the batteries themselves can only do that a limited number of times when brand new.

No One these days repairs a remote control, especially if its not something like soldering.
Get one from the RadioShack, since replacing the spares in not worth time spent.

Electroenthusiast said:

No One these days repairs a remote control, especially if its not something like soldering.
Get one from the RadioShack, since replacing the spares in not worth time spent.

Click to expand...

As far as I'm aware, repairing remotes is extremely common, and usually pretty easy - and didn't radioshack cease trading years ago?. Also, replacing a high quality Panasonic remote with a cheap crappy radioshack one doesn't sound that good an idea.