3900s suddenly not finding all sats, HELP!

[craptasticguy]

ok guys i need all of your collective help, i have
been reading and searching alot, and i have found
problems similar to mine but never any solution that
anyone confirms to work.. I have 2 3900's both were
working fine 2 days ago around 8pm. no problems
whatso ever. my first 3900 stays on, hooked up to my
DishPro Quad LNB through the dish adapter to allow
Legacy receivers to work with DP. Never had any issues
with it. Well when i unplugged the sat feed from
reciever 1 and plugged it into receiver 2, everything
was fine, receiver 2 found the switch (DP 500 quad)
and found both satellites, so i unplug the sat feed
cable and plug it back into receiver 1. upon doing so
i see that teh screen is showing the "Satellite signal
lost" error screen.. so i go into the check switch and
run check switch... now reciever 1 is not finding
satellites.. teh screen comes up just like this..

UNKNOWN
1 1 2 2
x even x x
No Switch box detected.

I get a good strong 120 signal locked on 119 but
nothing on 110, and not all 119 is coming in.. only
some transponders.. so i am getting some channels but
only a handful or so. SO next i think.. hmm let me
try receiver 2.. plug it up, run check switch. SAME
THING! now receiver 2 doesnt work either.. I have
tried replacing the dish Adapter that converts legacy
receivers to work with DP, still same result,
REflashed my tsop, same result, reflashed eeprom with
virgin, same result, put new connectors on teh lines,
same result.. I also checked teh Voltage output of teh
reciever, which is right at 13v and some times around
17v for different transponders, and with the adapter i
am getting an even 19.9 to 20.0v as i should for DP.
I am COMPLETELY stumped and i am going to take a
receiver to a friends house that has the older legacy
dish and see if it works there.. Whats going on? Did
both IRDs die at the exact same time, are both dP
adapters bad? or is my dP quad LNB bad? oh forgot to
mention, my 811HD works just fine, finds all sats adn
transponders.. someone help a poor guy out, im about
to toss them out the window!

[jimyt]

I just lost all mine all sats tonight, on 2 3900's one on emu and one on plastic, I think it;s a bad dish pro twin, I lost everything, even on my subbed IRD no signal is showing on anything, even when I hook up my sat finder it won't make any sound....

Perhaps yours is dying a slow death, odd tho, I have seen a couple more post just like yours and mine.

Very odd. If I didn't have a subbed IRD showing no signal I might be concerned, have another set of Legacy's on the way,

Jimyt

PS What LNB's are compatible with the 3900's ??? The Dish Pro's won't work will they?

[joesnuffy]

Try tapping/pecking your dish adapter. Sometimes they get stuck inside. You might have damaged the cable when you swapped the boxes out. It only takes a little piece of the wire mesh inside the cable touching the copper to stop your sat signal from working properly. Also check outside to make sure the copper is in good shape that plugs into the lnb. I have seen the copper burn off especially if you have a junction that is exposed to rain. I always silicone all connections for that reason. I am running 700 ft of cable to get a good signal and a lot of times I have to re-do my junctions. You can also hook straight up to 110 and straight up to 119 do a check switch to see if all channels come in to try and illiminate the receiver and/or bad cable to outside as problem. Thats a good time to check dish allignment also.
Joe

[jjschagundi]

I had the SAME prob with my 3900, I think it happened on Wed. put my 6000 in place and the sat is fine. I read somewhere else a thread where someone else posted about it. The reply was that it has to do with the tsop being picky. I then rewrote my tsop with the original and erased sa30 to stream latest ver. (p236 if I remember) It did stream down a new tsop and sats are happy with the receiver again. My problem now is I would like to mod my own tsop instead of grabbing a posted modded tsop with the closest bld cfg. but I can't figure out how to make my own .fs and with what I have tried I end up with the checksum incorrect. I can't figure out how to get the checksum reversed.

I would appreciate any help on how to do my own 3900 mod and I think this will resolve our problem.

Thanks!

[spickle]

4000 does not see sats
301-10 sees a few transponders on 119
dead dead I tell you I have killed em
I have not given up I try all
been fooling with 301 for over a month
no sat signal either sat
others work fine
28
37
another 301-10
3900
all work
I have the jinx touch
I touch em they die
LOL

[jjschagundi]

Well, I found a rsanew fs for a 3900 and re-did my own tsop using it and my 3900 is running great again. Been back up for the last 4 hrs.
If anyone needs the fs here it is:

[RSAnew3900-236P-only]
prepare_reverse_crc(0x107d0c)

set(0x107ac8, 0x6EF7E8A138BAB5CD7DC7FD6966CFC56D)
set(0x107ad8, 0x59F11DB1B45C0B61D5D123230B5C8531)
set(0x107ae8, 0xAE06993AB4D00AE9A667AC89BB99E3BC)
set(0x107af8, 0xF8490FE9478B959F8A0355AB42C9335A)

commit_reverse_crc()


:D