nf HD switch screwed??

[solaris]

Hello all,
I have a question re: nFusion nuveno HD receiver. I have mine setup and had a diseqc switch connected to it. I had it setup working perfectly, however lately I've been having issues regarding the switch. The box will switch properly, but then out of the blue if I'm watching something on a satellite on port two or three, it will switch back to port 1 again indescriminantly, without me toching the remote or changing the channel. It is on a channel designated to that port but sort of gets "stuck" on port 1. There is nothing I can do to get it to switch again, changing the channels doesn't work, the only channels that work are the ones on Port 1. What I find resets it and gets it to work for a little white (like 30mins before it does this again) it to power cycle it.

So I wondered if it was the diseqc switch and tried another. Same deal. So I went and got a 22kHz switch and again, it works for a while but then does the exact same thing, this time, the 22KHz tone stops and it goes back to Satellite 1.

I am wondering if the 8psk is overheating and if maybe letting it cool helps? Or maybe it's faulty or something else?

Any suggestions I got no idea why it's doing this.

Thanks in advance!
-Solaris

[Terryl]

Check all connections for corrosion at the switch, LNB's and receiver (totally power down the receiver(s) with the switch in back first) if you find any corrosion then replace the connector.

If you don't have enough slack in the coax then you may need to replace the whole jumper from the switch to the LNB's and maybe the coax from the switch to the receiver.

But before you go to all that work, try grounding the switch first, run some 12 gauge (or larger 10 gauge) copper wire to an outdoor metal cold water pipe, or it's own ground rod.

If you coax is old, (over 5 years) then you could have a high DC resistance problem in the shield, this can be due to lots of things,(water in the coax, corroded shields) grounding the switch will sometimes make strange switching problems go away.

If you think it may be the receiver overheating, then try a small desk fan blowing air on it.


What types of LNB's are you using, and how many? (this will help us a lot in troubleshooting this problem)

[solaris]

Check all connections for corrosion at the switch, LNB's and receiver (totally power down the receiver(s) with the switch in back first) if you find any corrosion then replace the connector.

If you don't have enough slack in the coax then you may need to replace the whole jumper from the switch to the LNB's and maybe the coax from the switch to the receiver.

But before you go to all that work, try grounding the switch first, run some 12 gauge (or larger 10 gauge) copper wire to an outdoor metal cold water pipe, or it's own ground rod.

If you coax is old, (over 5 years) then you could have a high DC resistance problem in the shield, this can be due to lots of things,(water in the coax, corroded shields) grounding the switch will sometimes make strange switching problems go away.

If you think it may be the receiver overheating, then try a small desk fan blowing air on it.


What types of LNB's are you using, and how many? (this will help us a lot in troubleshooting this problem)

Thanks for that. One of the coax is new and the other, that is used on satellite 1, is a bit older but works fine obviously because that's what seems to be kicking in.

ATM I only have two LNBs so if it were just my diseqc switches I'd be happy with a 22kHz, I intend to get more in the future but for now it's keep it simple stupid for me haha.

BTW the system works perfectly on a Limesat Ultra and nFusion solaris, I just got the HD receiver.

I will try a fan later when I get the time see if that's any help. The receiver has a fan built in but it's really small. I was also thinking it may be a faulty 8psk, I'm kind of hoping it is that and not the receiver because that's dirt cheap and I have one coming on the way.

Edit: the only reason why I'm not positive it's the 8psk module is because it still works, on satellite 1 lol.

Edit 2: I was just wondering if people think I'm right because I'm certainly no pro? Maybe others has had a similar problem or other suggestions as to what the issue may be?

[gwrowe]

So what you are saying is, you have 3 receivers running off 1 dish, in your antenna settings which sat is turned off and what sat is turned on? If you have the 22KHZ switch turned on for both, this could be your problem. Check your settings and also remember, you don't use the port settings either, a 22 KHZ switch has no port #'s.

[solaris]

So what you are saying is, you have 3 receivers running off 1 dish, in your antenna settings which sat is turned off and what sat is turned on? If you have the 22KHZ switch turned on for both, this could be your problem. Check your settings and also remember, you don't use the port settings either, a 22 KHZ switch has no port #'s.

Thanks for the assistance but no, atm I only have one receiver running at this time. The only switch I'm using is the 22kHz, I know there are no "sat numbers" for a 22kHz switch but I was referring to Sat 1 being 0kHz and sat 2 being 22kHz tone. I setup the 22kHz to try to keep things a bit more simple, I intend to use the diseqc switch but for now the 22kHz switch is all I'm using.

The settings are correct, I disabled Diseqc and am only using the 22kHz.

Let's say this scenario. If I reboot the receiver by power cycle the everything works fine. Both LNB's switch properly with the 22kHz. When I tune to a channel that is on 0kHz, it works. When I tune to a channel on the other LNB on 22kHz, it also works, but after a half hour it appears the 22kHz from the receiver just stops working and it goes back to the 0kHz LNB. So the channels on the 0kHz LNB will come in but if I tune to a channel on 22kHz it wont work, it continues to receive the signal from the 0kHz LNB.

Oddly enough it also works this way with a diseqc switch, only this time you're not working with 22kHz switch, it goes to Port 1 regardless of settings.

So the channels work, as far as receiving a signal it works, but the switching almost seems to "die" and "fallsback" to port 1 on the diseqc switch or in the 22kHz switch's case it switches back to 0kHz.

So, back to using the 22kHz switch for now, if the 22kHz tone stops working and I tune to a channel that was set to 22kHz, but reverse the connection, or bypass the switch all together, it works. Of course, that doesn't serve it's purpose because I would like the switch to work properly so I don't have to keep connecting and disconnecting wires when I change channels lol.

So considering other receivers work fine with the switches, I am trying to pinpoint the issue. I am wondering if the 8psk module is merely overheating, maybe others have had a similar issue as me, or maybe someone thinks it's faulty. Unless I'm missing something here I'm am truly hoping it's the module because it would suck if it's the receiver, it's the only HD receiver I got.

Could it also be a faulty bin?

[Terryl]

Can you put the stock module back in? Or run it without the 8PSK module?

Ttesting this on non HD transponders (look on lyngsat.com for info on this) on the two satellites will tell you if the module is hosed or the receiver is having a problem.

What type/brand of LNB's are you using?

[solaris]

Can you put the stock module back in? Or run it without the 8PSK module?

Ttesting this on non HD transponders (look on lyngsat.com for info on this) on the two satellites will tell you if the module is hosed or the receiver is having a problem.

What type/brand of LNB's are you using?

Thanks stupid me never thought of that. I don't have the stock module I got this from a friend, but I will try it without 8psk and see how that works out and get back to you folks. I'm really hoping that's what it is. Thanks!

[Terryl]

I don't know if the receiver will work without the 8PSK module in it, someone with your brand of receiver will have to pop in and give us that answer.

[solaris]

I don't know if the receiver will work without the 8PSK module in it, someone with your brand of receiver will have to pop in and give us that answer.

If not I can try another since I'll be getting another 8psk, I haven't had a chance to try it but I will when I get the chance.

[gwrowe]

I have a NFHD and when I put in the 8psk I never pulled out any stock module, I don't believe there is one there, but I unplugged my 8psk, when it needed replacing, and it will only work on the SD channels.

[yappapi]

just remove the cross over cable from the 8psk in the back..sd only will work.

[solaris]

First I want to thank everyone for the help they've been giving it's been greatly appreciated.

Now to the best part. I believe I solved the issue. When I went to take the 8psk out the whole receiver was insanely hot. Like, hotter than I would want it to be. I didn't have anything stacked on top of it but it was enclosed inside a TV Stand. So, I took it out of the stand and set it on top, now it's been running a whole lot cooler. Long story short, that seemed to fix the problem. Now that it's no overheating, both the 22kHz switch and the diseqc switch both work perfectly, been watching TV ever since.

So just for any future people that may have trouble with an nfHD, if you got weird problems, just make sure it's getting lots of air flow. There is a fan built inside it for a reason, make sure there's lots of room around the receiver and as long as it gets good airflow it should work great :).

Thanks for the help everyone!

[yappapi]

solaris,
it is common knowledge that the NFHD gets hot.
keep it out in the open and put a cheap laptop cooler on top and switch the usb port to the rear to power it.
problems solved!
glad you found your problem.
if you ever get the blue light only...dead box symptoms it will be the c10 location on the power supply.
simple fix for a buck or 2 and a little soldering.

[meduser]

if heat is a big issue..

I have 2 laptop coolers on my NFHD. I have a usb multiplier. I plug my usb multiplier into the back usb port on the NFHD, which then gives me 4 usb ports. I plug both the laptop coolers into the multiplier. I have one on top and one on the bottom, and my unit never even gets warm. The entire set-up cost me like $20 from a dollar store.