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Please help me troubleshoot a MX-900 with Direct TV H24-200
This thread has 8 replies. Displaying all posts.
Post 1 made on Monday October 15, 2012 at 11:18
Diamond Dog
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I have a MX-900 that has worked well for about a year and it was programmed using CCP.

It sends to multiple RF to IR transmitters throughout the house and in this particular case it is transmitting to a MRF-250 which "blasts" a signal to a Directv unit. The MRF unit is about 4 inches away from the DirecTV unit and its model # H24-200

I push the remote buttons and it doesn't ALWAYS (sometimes, biut more often than not) execute on the receiver.

I tried changing batteries to a fresh set and same problem.

The only unusual thing is that when I pull the batteries and reinsert and the remote resets, it seems to work well for the first few key presses, but then it gets bad again.

I tried using the IR database at first. It says HR24 instead of H24. About 50% of the keys work. I had to learn the rest of them.

When I re download my saved file to the remote, it seems to take care of these problems...but after time it gets progressively worse. And only for the Sat TV nothing else

I would think if the remote were bad, it would be on all my devices and not just my Sat TV and the intermittent nature makes this frustrating to make a determination.

Could you please give me some troubleshooting tips?

Last edited by Diamond Dog on October 15, 2012 15:52.
Post 2 made on Monday October 15, 2012 at 20:10
Total Control Remotes
Super Member
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2,987
Do yourself a favor and get rid of the MRF-250 in favor of an MRF-260 which has a narrow band transmission and will work more effectively.
Post 3 made on Monday October 15, 2012 at 20:50
goldenzrule
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On October 15, 2012 at 20:10, Total Control Remotes said...
Do yourself a favor and get rid of the MRF-250 in favor of an MRF-350 which has a narrow band transmission and will work more effectively.
OP | Post 4 made on Tuesday October 16, 2012 at 09:38
Diamond Dog
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Thanks for the replies. Can someone please elaborate on the benefits of narrow band? Not techie enough to know the differemce between narrow and wide band?

Why do you guys think it the MRF?
Post 5 made on Tuesday October 16, 2012 at 13:00
Lowhz
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I think it might be IR flooding to the satellite box. Try using an IR emitter stuck to the receiver and adjust the output gain on the MRF. Turn off the IR blaster in the CCP program.

Wide band vs narrow band RF just means the RF receiver in the MRF is listening for a narrow sliver of RF band for a signal and ignores RF noise on close adjacent frequencies. This will reject random RF noise when the gateway is open. THe wideband is more sensitive to more frequencies and prone to RF>IR failure when the gateway is open.
OP | Post 6 made on Tuesday October 16, 2012 at 20:02
Diamond Dog
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Thanks for your advice. I will try it

Here is a stupid question:

Where do I affix the IR "eye"? Directly on top of the ir receiver on the sat box, to the right or left of it? How far to the right or left? Also, it is not "sticky" anymore. What adhesive should I use?
Post 7 made on Wednesday October 17, 2012 at 11:00
Duct Tape
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On October 16, 2012 at 20:02, Diamond Dog said...
Thanks for your advice. I will try it

Here is a stupid question:

Where do I affix the IR "eye"? Directly on top of the ir receiver on the sat box, to the right or left of it? How far to the right or left? Also, it is not "sticky" anymore. What adhesive should I use?

depends.  wherever it works best.  sometimes moving it an inch away from the IR eye will improve performance.  

clean off the sticky residue and use clear hot glue or silicone to restick it.  most emitters come with extra adhesive pads as well, just in case you still have the original bag the emitters came in.
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OP | Post 8 made on Thursday October 18, 2012 at 14:56
Diamond Dog
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Just want everyone to know that using the "eye" instead of the blaster has seemed to improve things greatly.

I guess you should only use "blaster mode" when you can not use eyes as a last resort?

Are there times when an eye does not work as well as a blaster?
Post 9 made on Thursday October 18, 2012 at 16:55
goldenzrule
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Pretty much any pro here, and I would assume anywhere, will tell you to ALWAYS use the emitters. There are reasons for it, and you got first hand experience as to why. They are much more reliable, and you can assure that you signal is getting to the equipment. Whats more is you can now assign the ports so your signal is only getting to the equipment that it should, and not have every emitter flashing at every button press.


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