Unknown Code for Very Old Emerson TV

Dave Sampson · Post by **Dave Sampson** » Sun Apr 16, 2006 8:42 am

I would like to control this TV in my workshop. It is a very old Emerson 13". It is so old that the remote does not have a number pad to select channels but has keys 1-16 to select a programmed channel-got to be 20-25 years old. It works though and I use it with a satelite receiver and it does well. All I really need are power, volume, and mute.

I have tried to learn the codes and come up with weird 'gap' results. I tried doing a remote search and tried the codes provided with my 1994, and no good. I really should replace it, but it works! Not only would I have to come up with the money to replace it, but then I would have to address throwing away a perfectly good working TV-I am not good at that.

I would appreciate any help but it would not be worth putting a lot of effort into since I am sure no one else would ever need the code. Here is a link to my IR with the 4 learned codes. They always seem to come up the same and the 1994 operates the TV with them.

https://www.hifi-remote.com/forums/dload ... le_id=3086

Post by **The Robman** » Sun Apr 16, 2006 8:56 am

Could you learn all of the buttons from the original remote please (and verify that they all work). It would be less work to decode all of the signals at once rather than a few at a time, and if I'm going to create a code for this set, I would want it to be complete.

If you can tell what it is, I'd also like to model number.

johnsfine · Post by **johnsfine** » Sun Apr 16, 2006 8:58 am

What's wrong with learning all the codes and operating the TV with the learned codes?

It's a small simple protocol, it would be easy to reinvent with the Protocol builder spreadsheet. But you'd need to learn them all anyway to build an upgrade that way.

These signals each take much less learning memory than typical learned signals, so once you've learned them all, why go to further effort?

But once you've learned them, please post the file of learned signals anyway.

If there is a reason to build an upgrade (extender etc.) I'd be glad to give further help with PB. (Edit: I see while I was typing this, Rob responded, so he'll probably help with PB faster than I will as well).

Post by **The Robman** » Sun Apr 16, 2006 11:10 am

OK, I got impatient so I created an upgrade anyway, but I'd still like to see the learned signals for the rest of the buttons.

Upgrade Code 0 = 1F D0 (TV/2000) Emerson TV (KM v8.36)
FF 00 51 C0 20 90 70
End

Protocol for 15-1994:

Upgrade protocol 0 = 01 FF (S3C8+) Emerson TV (PB v3.11)
43 8C 01 8B 0E 84 41 08 06 01 07 07 23 01 07 03
04 40 74 8D 01 33
End

Protocol for URC-6131:

Upgrade protocol 0 = 01 FF (S3C8+) Emerson TV (PB v3.11)
43 8C 01 8B 0E 84 41 08 06 01 07 07 23 01 07 03
04 40 74 8D 01 46
End

Dave Sampson · Post by **Dave Sampson** » Sun Apr 16, 2006 11:19 am

Thanks for the offer Rob. I keep getting multiple entries for some codes. Have good batteries and doing in partially dark room and trying various distances. I can clean up some but not all at one time. If it is a problem, I can try for cleaner copies and do them in small batches. Some of the codes, Vol+, never have a single entry.

As noted the TV is an Emerson Model M1325R. No other manufacturer listed. It was made in Kaohsiung Taiwan.

https://www.hifi-remote.com/forums/dload ... le_id=3087

Thanks again for a terrific site. Have you guys ever thought about running for president or something? If the country was run like this site we would all be living good!!!!!

Dave Sampson · Post by **Dave Sampson** » Sun Apr 16, 2006 12:14 pm

That works Rob!!! Thanks a lot!!! I will keep my eye open for the complete upgrade. I dont need it now but might as well have it. Especially if you go to the trouble. Thanks Again!

johnsfine · Post by **johnsfine** » Sun Apr 16, 2006 1:06 pm

Dave Sampson wrote:Thanks for the offer Rob. I keep getting multiple entries for some codes. Have good batteries and doing in partially dark room and trying various distances. I can clean up some but not all at one time.

All those decodes are completely wrong and vary according to subtle changes in the raw data that DON'T affect the meaning of the signal.

When Rob looks at the signal in your .ir file he isn't looking at the decodes. He is looking at content that is consistent every time you get a learn anywhere near correct.

So there is no need to try to clean them up. One half decent learn of each signal should be enough. If one of those is so bad that Rob can't read it, he'll recognise that and tell you to redo that one.

Post by **The Robman** » Sun Apr 16, 2006 2:35 pm

Here's the replacement upgrade. Channels 11-15 are on the arrow buttons and ch 16 is on the EXIT/CENTER button.

Upgrade Code 0 = 1F D0 (TV/2000) Emerson TV 1980s (KM v8.36)
FF 00 D2 3E 05 98 08 88 48 C8 28 A8 68 E8 18 C0
20 90 70 B0 58 D8 38 B8 78 F8
End

Here's the KM file if you want to save it ...
https://www.hifi-remote.com/forums/dload ... le_id=3090

If you'd like to test the gaps in the OBC sequence, here's a test upgrade where the gap codes are assigned to the numeric buttons, the volume buttons and the POWER button. (Ignore the 3 and 4 buttons which will be the volume controls, and 9 which is MUTE).

The numeric buttons are OBCs 0-9
The volume buttons are OBCs 10-12
and the POWER button is OBC 15

(Normal warnings apply when testing unknown codes with TVs).

Upgrade Code 0 = 1F D1 (TV/2001)
FF 08 51 50 D0 30 F0
End

Post by **The Robman** » Mon Apr 17, 2006 10:10 am

Any updates? Did the new upgrade work properly, did you try testing the dummy upgrade and if so, did you find any new functions?

Dave Sampson · Post by **Dave Sampson** » Sat Apr 22, 2006 9:25 am

I apologize for taking so long with this Rob. First, the complete Upgrade works perfectly! Thank You.

Now for the dummy upgrade results. First, this is a small 13" TV with no features. No stereo and no video inputs, an RF coax connector only.

Vol+ and -: No effect
Mute = Toggle between selected channel and 'Video'. I have no idea what video refers to since there are no video jacks, no effect on screen. Just changes ID in upper corner from the selected channel to 'video'.
Power = Toggle between Sap and Main. I have never heard any sap information on this TV, but this is not available on TV or Remote.
1 = Recall: This is not a previous channel, just displays channel number.
2 = Same as Mute:
3 = Volume +:
4 = Mute:
5-7 = no effect:
8 = Channel -: There is no channel - on remote. This just steps up to the next programmed channel. You cannot select an actual channel number with this set or its remote. Just a choice of 1 of 16 programmed selections.
9 = Same as Power:
0 = Channel +: There is no channel + on remote.

Thanks again for the help Rob and for the site. If I can be of further service, just let me know!

Post by **The Robman** » Sat Apr 22, 2006 11:59 am

Thanks Dave, I'm adding the new functions to the KM file as I type. However, I wonder if you could check some of your results. The 3 button was supposed to be VOL+, so that was expected, but the 4 button should have been VOL- and the 9 button should have been MUTE. I re-used these OBCs just so that I could keep OBCs 0 thru 9 on the numeric buttons.

Edit: I've updated the KM file (same link as before) and here's a ready to paste upgrade for you:

Upgrade Code 0 = 1F D0 (TV/2000) Emerson M1325R TV (1980s) (KM v8.40)
FF 00 F6 FE 25 98 08 88 48 C8 28 A8 68 E8 18 C0
20 90 00 10 70 40 B0 F0 30 58 D8 38 B8 78 80 F8
End

I put the first TV/VIDEO function on the TV/VIDEO button and the 2nd one on the PROGRAM/GUIDE button. The SAP function should really be on the SURROUND button, but that would have required a keymove, so I put it on the MENU button instead (though I realise that these buttons are no use to you).

However, you might fnd the new DISPLAY, CH+ and CH- buttons useful.

Dave Sampson · Post by **Dave Sampson** » Sat Apr 22, 2006 6:43 pm

Rob, I have checked again and get same results. I loaded both the test code and the complete code from your earlier messages along with the protocol from there. So a mystery?
Test 3 should be a volume command and is Vol+
Test 4 should be a volume command (vol - I assume) and is mute.
Test 9 is Mute
Vol- does not appear.

Again the complete code works perfectly.
I have put IR with both devices in diagnostics, here is link.
https://www.hifi-remote.com/forums/dload ... le_id=3122

Post by **The Robman** » Sat Apr 22, 2006 8:15 pm

Well that certainly clears it up. The earlier files that you posted where from a 15-1994, and your post talks about the 15-1994, so I was formatting the upgrades for a 15-1994. When you loaded that 15-1994 upgrade into a URC-6131, the buttons ended up with different codes.

Could you re-test the dummy upgrade using your 15-1994 please. Or, if you want to stick with the URC-6131, try this upgrade instead...

Upgrade Code 0 = 1F D0 (TV/2000) Emerson M1325R TV (1980s) (KM v8.40)
FF 06 51 50 D0 30 F0
End

Post by **The Robman** » Sat Apr 22, 2006 8:38 pm

Actually, the fact that some of those buttons in the URC-6131 did something, makes me wonder about the OBCs over 31. My guess is that they're all just wrap-around codes, but you never know, so here's another test upgrade with lots of buttons defined for the URC-6131...

Upgrade Code 0 = 2F D2 (VCR/2002) Emerson M1325R TV (1980s) (KM v8.40)
FF 00 F0 1C FE 42 99 F8 04 84 44 C4 24 A4 64 E4
14 94 54 D4 34 B4 74 0C 5C 4C 2C AC 6C EC CC 1C
8C F4 9C DC 3C BC
End

Dave Sampson · Post by **Dave Sampson** » Sun Apr 23, 2006 8:33 am

Well that certainly clears it up. The earlier files that you posted where from a 15-1994, and your post talks about the 15-1994, so I was formatting the upgrades for a 15-1994. When you loaded that 15-1994 upgrade into a URC-6131, the buttons ended up with different codes.

Could you re-test the dummy upgrade using your 15-1994 please. Or, if you want to stick with the URC-6131, try this upgrade instead...

Upgrade Code 0 = 1F D0 (TV/2000) Emerson M1325R TV (1980s) (KM v8.40)
FF 06 51 50 D0 30 F0
End

Here are results of 6131 test:
1=Ch+
2=Ch-
3=Vol+
4=Vol-
5=T90, T60, T30, T10, 0 for each push: This must be a sleep timer but this is the first I have seen of it. Not on earlier test. Nothing on remote will control this and I dont believe the TV has this ability.
6=Displays channel # and Main or Sap: TV does not have stereo or sap.
7=No effect
8=No effect
9=Mute
0=No effect
Power=switches between Sap and Main: Again, TV does not have Sap that I know of.
Mute=Shows 'Video' or channel #: TV has no video input.

I can not get these codes to work in the 1994. Most flash the LED faintly and then I get the 2 flashes for error etc. When LED does work it has no effect on TV. This is IR for the 1994 with the compete upgrade and dummy that you sent.
I dont think it has any bearing but I need to mention that I am using an extender with the 6131 and the 1994 is plain. Also I am loading these codes in the following manner since I am not using KM or RM.
Enter 981 into 1994 and get 4 blinks.
Upload 1994 to IR to set IR for 1994.
Add devices and protocols that were given in messages above.
https://www.hifi-remote.com/forums/dload ... le_id=3126