Dreambox (dm500s) only getting horizontal channels?

[amrhady]

Hi All,

I can't receive vertical polarization channels with my dm500s, I have tried several images but nothing works - only horizontal channels.

I have another receiver that works for both polarization so I think it's not LNB problem.

Can anyone help?

p.s. the power supply that came with the box (12v 2A) died and replaced it with a (12v 3A) -can this be the problem?


many thanks.

[jbvid]

Hi All,

I can't receive vertical polarization channels with my dm500s, I have tried several images but nothing works - only horizontal channels.

I have another receiver that works for both polarization so I think it's not LNB problem.

Can anyone help?

p.s. the power supply that came with the box (12v 2A) died and replaced it with a (12v 3A) -can this be the problem?


many thanks.

Hi
You can check your dm500s by disconnecting the LNB feed from the back of the box, then switch it on, you will need a digital meter to check the voltage on the 'F' connector output between the center pin hole and the threaded outer, you should have 12/13volts when a vertical channel is selected and around 18volts when a Horizontal channel is selected. I may have the H and V selections wrong but the differences 12/13 and 18 will show you if your DM is outputting both the LNB switching voltages, even if it is I would still try another LNB.
jbvid

[drawflex]

the change in power supply ampage isn't gonna be you'r problem here...
more likely the old power supply going pop took out the voltage switching stage in your reciever or vice versa.. Especially if the LNB works on another reciever. Worth doing matey's test with a multimeter to see if it switches voltage.. if not.. it's ~~~~ed

[amrhady]

Thanks for replying.

I don't have a meter now to test voltage, will try to get one. What if it's stuck on 18v, can it be fixed?

Thanks.

[mm009b]

i think your settings are wrong on 500 are you on a single dish ?
im sure 18v = V 12v= H goto setup and check mate cheers

[jbvid]

Thanks for replying.

I don't have a meter now to test voltage, will try to get one. What if it's stuck on 18v, can it be fixed?

Thanks.

Hi
No, its ~~~~ed unless you can get anyone to look at it and repair it for you.
jbvid

[amrhady]

i think your settings are wrong on 500 are you on a single dish ?
im sure 18v = V 12v= H goto setup and check mate cheers

I am on a single dish - I think 18v =H and 12v=V?

[jbvid]

I am on a single dish - I think 18v =H and 12v=V?

Hi
It doesn't matter a toss if H=12v or V=12v or H=18v or V=18v whichever but you need both voltages to read on your meter when selecting/changing between a Horizontal and Vertical channel.
jbvid

[amrhady]

I found a workaround, FINALLY!!!! -

I have noticed that if I change the sat-configuration of H/V (18,14,0) to OFF I would get no signal, but with 14 or 18 I only get horizontal channels. This means that my dm500 output can either be ZERO or 18v (no 14v output).

So I did the following
1. Entered my old receiver into the loop and set it to a vertical channel (output of recvr to input of dm500)
2. LNB cable to input of old recvr
3. on the dm500, made 2 configurations for the same satellite one with H/V =18v and another with H/V= OFF
4. Edit transponders: Vertical transponders to one with H/V =0 and Horizontal ones to satellite with H/V =18v
5. Scan !

This way when I turn into a Vertical channel on my dm500 the box will put ZERO V on the cable, yet my old receiver will be putting 13v. And when I switch to a horizontal channel the dm500 will put the 18v as my sat configuration says.

A temporary workaround till I fix my box


thanks a lot to all who replied

[jbvid]

Hi
Glad your sorted, looks like mm009b was in the right ballpark all along thanks for that, never had to look in at my DM settings, just going by what was standard in older sat receivers which has no option to change voltages in the menus.
jbvid

[mm009b]

cheers jbvid i just remember i had same scenario with a motorised setup and it took me a week to sort it


amrhady well done mate !

cheers guys

[uohamza]

if y have 2 receiver and one LNB no1r be master and no2 slave no1 take over polarization cut the power for the other receiver

[amrhady]

not sure If I got you right, but I have one receiver than can output 13/18v and another (dm500) that outputs only 0/18v. So the output voltage can be like this

V1-->old recvr, V2-->dm500

V1 | V2 | Vout
-----------------
13v | 0v | 13v
13v | 18v | 18v
18v | 18v | 18v