Debouncing Fails on My Remotes periodically!

Fuck. You ever work on TVs folks ? If I hemmed and hawed about it like this I would be making donuts.

You got a choice. Put a scope on the output of the IR sensor and wait days or weeks for the problem to occur, or replace the $1.50 sensor and see if it works. If the problem persists replace the micro if possible, or the main board.

If the remote was really that important and maybe not replaceable, you could put a CMOS version of a 555 timer on the output LED driver that would have a timeOn delay and TimeOff delay to snub the output so that only one frame gets sent.

Jamie

OK, I don't know what is wrong here but let's just explore some logic here eh ?

Two, that is two (2) remotes, one OEM and one universal, are doing the same exact thing. One is OEM and one is universal therefore they are different chipsets and the odds against them having the exact same symptom, an INTEMI TTENT symptom that occurs at the same time in both remotes, that have diffe rent chipsets, is astronomical.

We have gone though just about everything in the house. The CFLs, the sunli ght, all that.

Oh shit.

Hey OP, you still around ? The last, very last test - when this happens aga in, BLOCK the IR sensor window and see if it stops. If it keeps going then it is for sure either the IR sensor or the micro in the TV. If you've alrea dy done that, disregard. We went through all the possible sources that you know about, but IR is not visible to the naked eye, so there is still a pos sibility.

Literally, stick your thumb over the window. That is the LAST definitive te st.

IF it DOES stop with your thumb over the window, ummm, do you have an alarm system in the house ? Possibly with motion detectors ?

That is the ONLY other thing it could be other than the TV. Because the two DIFFERENT remotes act up at exactly the same time, they are RULED OUT AS A POSSIBLITY by LOGIC.

If you do not have motion detectors (even near a window from outside), if y ou are sure there is no source of IR hitting that thing, it is the detector or the micro. No doubt.

Now the sticky part, hahaha. you see I was always the one to do these wierd problems of course....

The reason you must stick your thumb over the window on the TV is because ( now get this lol), your neighbor could have a motion detector light outside . The IR could be bouncing off of someting out there and into your window. Literally, it could be occurring when he parks his car just about a couple of cm. over to the right (or left) of normal, and you would NEVER know it. Remember you cannot see IR.

The odds of this are not great, it is quite unlikely, but it is possible. I have had shit like this. I have had vertical height screwing up the greysc ale (because the worng dud was used in the reman of a CRT), I have had an u nexplainable ground loop through a cable box that caused a hum bar in a pro jector because there were two ground rods installed at the house. I have ha d some pretty wierd problems and I know how to solve them. You have to cons ider the impossible sometimes.

This is your last test. Next you replace the IR sensor in the tv, and I giv e it a 50/50 chance. It could just as likely be the micro. If that's the ca se it is probably an SMD and is either difficult to replace or maybe near i mpossible, which would mean a new signal/main board.

"OK, I don't know what is wrong here but let's just explore some logic here eh ?

Two, that is two (2) remotes, one OEM and one universal, are doing the same exact thing. One is OEM and one is universal therefore they are different chipsets and the odds against them having the exact same symptom, an INTEMI TTENT symptom that occurs at the same time in both remotes, that have diffe rent chipsets, is astronomical.

We have gone though just about everything in the house. The CFLs, the sunli ght, all that.

Oh shit.

Hey OP, you still around ? The last, very last test - when this happens aga in, BLOCK the IR sensor window and see if it stops. If it keeps going then it is for sure either the IR sensor or the micro in the TV. If you've alrea dy done that, disregard. We went through all the possible sources that you know about, but IR is not visible to the naked eye, so there is still a pos sibility.

Literally, stick your thumb over the window. That is the LAST definitive te st.

IF it DOES stop with your thumb over the window, ummm, do you have an alarm system in the house ? Possibly with motion detectors ?

That is the ONLY other thing it could be other than the TV. Because the two DIFFERENT remotes act up at exactly the same time, they are RULED OUT AS A POSSIBLITY by LOGIC.

If you do not have motion detectors (even near a window from outside), if y ou are sure there is no source of IR hitting that thing, it is the detector or the micro. No doubt.

Now the sticky part, hahaha. you see I was always the one to do these wierd problems of course....

The reason you must stick your thumb over the window on the TV is because ( now get this lol), your neighbor could have a motion detector light outside . The IR could be bouncing off of someting out there and into your window. Literally, it could be occurring when he parks his car just about a couple of cm. over to the right (or left) of normal, and you would NEVER know it. Remember you cannot see IR.

The odds of this are not great, it is quite unlikely, but it is possible. I have had shit like this. I have had vertical height screwing up the greysc ale (because the worng dud was used in the reman of a CRT), I have had an u nexplainable ground loop through a cable box that caused a hum bar in a pro jector because there were two ground rods installed at the house. I have ha d some pretty wierd problems and I know how to solve them. You have to cons ider the impossible sometimes.

This is your last test. Next you replace the IR sensor in the tv, and I giv e it a 50/50 chance. It could just as likely be the micro. If that's the ca se it is probably an SMD and is either difficult to replace or maybe near i mpossible, which would mean a new signal/main board. "

Both remotes are OEM - One for the TV and the other, the JVC vhs/dvd combo.

I get it. Next time I get a runaway volume, I will block the transmitter e yes of each remote. If runaway vol. stops, it's the remotes. If it does no t, it's likely the Sanyo tv.

BTW: I have next to ZERO soldering skills, and I don't want to mess with a TV that so far has given excellent service overall. If it occurrs once e very two weeks to every two months, I can live with that.

NO NO NO ! Block the window on the TV ! We have already eliminated the remote transmitters.

AND, use a newsreader (OP) that quotes previous content correctly!

And, set your newsreader ("jurb") to wrap text around column 72.