Nanosat Lite Flashing LNBF

I am having a problem with a Nanosat Lite flashing LNBF. The unit flashes LNBF when the RG6 line is connected but does not flash LNBF when it is not connected.

All cables are good and connected properly. I have tried using the recovery loader and factory file but still have the same issue. Based on my searches I believe I need a TIP42 transistor.

I found the following posted by setwire on another site. I tried touching the 2 pins the near the rear on TIP42 transistor and then booting, the lnbf message did not display but the receiver still didn't get any signal. I am just looking to confirm that TIP42 is all I will need to repair this receiver.

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Take the top off your box look on circuit board for a little black transistor ( it has metal top with hole, the heat sink, and three pins on bottom) located about one inch in front of where you hook sat wire.

It could or could not be attached to an aluminum heatsink.

Make sure you get right one, part Tip42c or in the case of Viewsat, CNX and Sonicview KA317.

The Tip42C is located directly in front of the shiny box that your sat in coax connects to.

It is Black and plastic with metal extending above it with a hole in metal and has 3 legs which are soldered to the board,

Tip42C or KA317 is printed on the black plastic face.

Viewsat ultra's,Sonicview and CNX Receivers use the Fairchild KA317 Transistor and it is Mounted to a Heatsink

**********If the KA 317 goes bad on a CNX Receiver you will get LNB F error on the display.

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Take note of the way it is oriented, if mounted backwards it will not work.

If you are getting NO Signal Message and have No Voltage at your Sat In Connector Hook up sat wire and take a small screwdriver and touch first two pins toward back of box together.

If you get a signal, then this transistor is bad and should be replaced.

NTE332 transistor is a direct replacement if you can't find the Tip42C.

Tip42A or Tip42B will not work.

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your problem is with coax

I have tested the receiver in 3 different locations where other Nanosat products are setup and working fine. I am 100% positive the problem is not the RG6 or switch.

check and replace your RG6 cable..cable might be shorting out..check the center conductor of the coax make sure is not broken..good luck

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Originally Posted by CHEVY85

check and replace your RG6 cable..cable might be shorting out..check the center conductor of the coax make sure is not broken..good luck

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Did you read my post above? I already said the problem is not the RG6, this has been confirmed by testing the unit at other locations where other Nanosat products including another Nanosat Lite are working without a problem.

I'm just going to go ahead with replacing the TIP42 transistor, it will be an easy, cheap repair anyway.

I am willing to bet it is the cables switch or lnb And yes we all read your posts

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Originally Posted by n3fta

Did you read my post above? I already said the problem is not the RG6, this has been confirmed by testing the unit at other locations where other Nanosat products including another Nanosat Lite are working without a problem.

I'm just going to go ahead with replacing the TIP42 transistor, it will be an easy, cheap repair anyway.

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It is your coax if you check closely to the center copper lead at the connector you will more than likely se a small silver ground thread wrapped around it, this is the cause of that problem, check both ends, sometimes it is very hard to see, if you take a multimeter and set it for ohms, and test the ground to the positive center it will react. Trust me this is the problem.

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Originally Posted by pugsycan

I am willing to bet it is the cables switch or lnb And yes we all read your posts

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Well if you all read my post why keep suggesting the same thing? I have already confirmed that this issue has nothing to do with the switch, lnb or RG6. This isn't my first rodeo I've installed many dishes and I can tell you I know the problem is with the reciever and not the setup. I have made it very clear that other Nanosat Lite receivers work without issue using this exact same setup.

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Originally Posted by gwrowe

It is your coax if you check closely to the center copper lead at the connector you will more than likely se a small silver ground thread wrapped around it, this is the cause of that problem, check both ends, sometimes it is very hard to see, if you take a multimeter and set it for ohms, and test the ground to the positive center it will react. Trust me this is the problem.

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And once again someone tries to tell me it's the RG6. Not sure how you people are speaking so matter of factly when your not in the position to test the unit for yourself, and I have confirmed that the RG6 is not the problem.

If anyone has any ideas besides the RG6 I would love to hear them. Either way I have ordered the TIP42 transistor which has been known to solve this exact issue.

I'm at work and don't have any extra RG6 kicking around but when I get home I'm going to try using the loop out from another receiver to see if there is any change.

well when you buy the transistor you might as well buy 2 or 3 so you have spares for when you blow it again
And if you dont want advice then dont bother asking this isnt our first rodeo either

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Originally Posted by n3fta

Well if you all read my post why keep suggesting the same thing? I have already confirmed that this issue has nothing to do with the switch, lnb or RG6. This isn't my first rodeo I've installed many dishes and I can tell you I know the problem is with the reciever and not the setup. I have made it very clear that other Nanosat Lite receivers work without issue using this exact same setup.





And once again someone tries to tell me it's the RG6. Not sure how you people are speaking so matter of factly when your not in the position to test the unit for yourself, and I have confirmed that the RG6 is not the problem.

If anyone has any ideas besides the RG6 I would love to hear them. Either way I have ordered the TIP42 transistor which has been known to solve this exact issue.

I'm at work and don't have any extra RG6 kicking around but when I get home I'm going to try using the loop out from another receiver to see if there is any change.

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Originally Posted by n3fta

Well if you all read my post why keep suggesting the same thing? I have already confirmed that this issue has nothing to do with the switch, lnb or RG6. This isn't my first rodeo I've installed many dishes and I can tell you I know the problem is with the reciever and not the setup. I have made it very clear that other Nanosat Lite receivers work without issue using this exact same setup.

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well if is not your first rodeo then you should be able to fix it yourself and if you can tell that the problem is your receiver by all means buy yourself another one.but please dont come in here with that attitude all we are trying to do is help you with your issues.trust me if you really dont know how to appreciate things then you really have to move on.this hobby is not for you..have a great daY..

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Originally Posted by n3fta

And once again someone tries to tell me it's the RG6. Not sure how you people are speaking so matter of factly when your not in the position to test the unit for yourself, and I have confirmed that the RG6 is not the problem.

If anyone has any ideas besides the RG6 I would love to hear them. Either way I have ordered the TIP42 transistor which has been known to solve this exact issue.

I'm at work and don't have any extra RG6 kicking around but when I get home I'm going to try using the loop out from another receiver to see if there is any change.

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and once again its your RG6 cable,:hehe:,and yes I have an idea besides rg6 cable"""by another receiver or get a sub""""simple as that..if you have already ordered the transistor which you said its known to fix your issue then probably there is no reason why we should keep talking about your problem.thank you and have a great day..

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Originally Posted by CHEVY85

and once again its your RG6 cable,:hehe:,and yes I have an idea besides rg6 cable"""by another receiver or get a sub""""simple as that..if you have already ordered the transistor which you said its known to fix your issue then probably there is no reason why we should keep talking about your problem.thank you and have a great day..

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if it's the cable why does it get that error on other cables?

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Originally Posted by pugsycan

well when you buy the transistor you might as well buy 2 or 3 so you have spares for when you blow it again
And if you dont want advice then dont bother asking this isnt our first rodeo either

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I do want advice. I'm just hoping someone has some other ideas besides the RG6 since I've already eliminated that as a possiblity.

What makes you think I would blow the transistor again?

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Originally Posted by CHEVY85

well if is not your first rodeo then you should be able to fix it yourself and if you can tell that the problem is your receiver by all means buy yourself another one.but please dont come in here with that attitude all we are trying to do is help you with your issues.trust me if you really dont know how to appreciate things then you really have to move on.this hobby is not for you..have a great daY..

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What attitude are you talking about? Are you mad because I am telling you that is not the problem? I've been in this hobby a long time it's very rare I have a problem I cannot solve on my own.

It seems to me that your the one giving the attitude.

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Originally Posted by CHEVY85

and once again its your RG6 cable,:hehe:,and yes I have an idea besides rg6 cable"""by another receiver or get a sub""""simple as that..if you have already ordered the transistor which you said its known to fix your issue then probably there is no reason why we should keep talking about your problem.thank you and have a great day..

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Give me a break man. How can you speak so matter of factly when your not here to test the unit or the RG6? I don't need to buy another receiver until I have exhausted all avenues of repairing the one I'm currently working on.

Your right there is no reason for you to continue talking about this problem since you don't seem to have any advice besides telling me it's the RG6.

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Originally Posted by dishuser

if it's the cable why does it get that error on other cables?

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Finally someone who actually gets it.

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Originally Posted by n3fta

I do want advice. I'm just hoping someone has some other ideas besides the RG6 since I've already eliminated that as a possiblity.

What makes you think I would blow the transistor again?



What attitude are you talking about? Are you mad because I am telling you that is not the problem? I've been in this hobby a long time it's very rare I have a problem I cannot solve on my own.

It seems to me that your the one giving the attitude.



Give me a break man. How can you speak so matter of factly when your not here to test the unit or the RG6? I don't need to buy another receiver until I have exhausted all avenues of repairing the one I'm currently working on.

Your right there is no reason for you to continue talking about this problem since you don't seem to have any advice besides telling me it's the RG6.



Finally someone who actually gets it.

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LNBF means LNB fault Now if you read back it was suggested to check the switches and lnbs too No one is saying it is not the transistor But something blew the transistor (if it is gone)

Hi n3fta, I echo what pugsycan wrote. No disrespects intended but you have to use logic. Taking your STB to another location only shows that the STB is NOW malfunctioning. Something caused it, be it you have a bad cable, switch, or lnb (doubt lnb though). And though I don’t suggest it, instead of moving the bad STB to another location move a working one to its location. You will fry that one also or not but that would settle the issue of it being a cable or switch. Like I said I really don’t advise it. Take the advice you have been given and work with it. You’ll save time, money and a lot of frustration. JMO