Positioner problem with DM800

[saalty]

Hi all!

I have a clone box about 2 year old. At home I have motorised dish (motor is about 6-7 years old) and I can use it without any problem. Even I used it with another fixed dish via diseqc switch. I moved to another city and I have new outdoor installation (90 mesh dish, Inverto BU LNB, and Amiko DM3800 positioner), but the old receiver. Since the new installation the dish positioning is a torture. Sometimes I can move to the other satellite sometimes not and I got an "Tune Failed" error message. Sadly it's a house with six floors, I'm on third and the this is on the roof, so I can't see does it's moving or not, but I'm today checked it with measuring instrument. I checked the input voltage. It's stable 12.1 V, and when motor is moving then 11.9V. So I can see on instrument does it working. So the PSU is OK. I taked apart the box and as you can see on pictures bellow, looks like no problem inside (for example with capacitors). I tried to change the image but with same results. I have no idea what going on. Any idea? As I sad, sometimes it's working, sometimes not, from 19.2E to 1W I can move after some attempt, but from 19.2 to east no way. My setting are 100% OK. Maybe sometimes I can to 23.5E but to 28.2E almost never. Here are the pics of inside and tuner


A k?pet a K?pfelt?lt?s.hu t?rolja. http://www.kepfeltoltes.hu


A k?pet a K?pfelt?lt?s.hu t?rolja. http://www.kepfeltoltes.hu


A k?pet a K?pfelt?lt?s.hu t?rolja. http://www.kepfeltoltes.hu

[andy91]

Only thing i can think of is the long run of cable could be your problem yet you say the motor was tested and its getting enough voltage.
I do know on some images you can add more tone ampitude to the motor like in the pic below,this is from a Dreamelite image.
Im no expert its only what someone told me as few years ago if your dish is a long way away and you do say it is on the third floor.

Andy.

[saalty]

Only thing i can think of is the long run of cable could be your problem yet you say the motor was tested and its getting enough voltage.
I do know on some images you can add more tone ampitude to the motor like in the pic below,this is from a Dreamelite image.
Im no expert its only what someone told me as few years ago if your dish is a long way away and you do say it is on the third floor.

Andy.

Thank you for your reply. It's 800 mV by default. I have to increase this value, but I don't know how much may I add safely...

[andy91]

Thank you for your reply. It's 800 mV by default. I have to increase this value, but I don't know how much may I add safely...

Mines on 800 when i had it on 900 and 1100 i lost my picture but i dont think it Will damage anything. Its worth a go.

Andy.

[saalty]

I tried it but without any result
I made some measuring today on receivers antenna input. Both amperage and voltage. The amperage in normal state was 110 mA. When I want to move to another satellite and the motor really moved, the amperage was around 350 mA but never was more than 400 mA (only once for just a moment I saw 400 mA). When I wan't to move to another satellite but motor doesn't moved the amperage doesn't changed, it's stays on 110 mA. Same situation with voltage. When motor doesn't want to move voltage doesn't changed. When motor moved the voltage was less for around 200 mV.

[digicon]

I tried it but without any result
I made some measuring today on receivers antenna input. Both amperage and voltage. The amperage in normal state was 110 mA. When I want to move to another satellite and the motor really moved, the amperage was around 350 mA but never was more than 400 mA (only once for just a moment I saw 400 mA). When I wan't to move to another satellite but motor doesn't moved the amperage doesn't changed, it's stays on 110 mA. Same situation with voltage. When motor doesn't want to move voltage doesn't changed. When motor moved the voltage was less for around 200 mV.

Have you tried changing the external power supply for another, Just in case the one you have at the moment is faulty, The receiver should in effect be pushing out at least 500 mA to power both the diseqc motor and the 13/18v swithing for the LNB

[saalty]

Have you tried changing the external power supply for another, Just in case the one you have at the moment is faulty, The receiver should in effect be pushing out at least 500 mA to power both the diseqc motor and the 13/18v swithing for the LNB

I measured the PSU too. Everything is ok with it, never fall down bellow 11.9 V even when motor is in moving.
When I measured the current on output it was never more then 400 mA, it's around 350 mA

[saalty]

tried with Optibox Anaconda and everithing is fine with this. So the problem is in my Dreambox. I don't know does new tuner solve my problem cauz for exapmle in dream the signal quality on 28.8e (for example Sky Thriller) is very low around 30% (with Optibpx all OK), but on 1W signal quality with dream is around75-80%

[andy91]

My Dm7000 motor setup works perfekt ( change power input from 40mA to 80 mA, i have long cable) but dm 800 not work ( where or how change mA - i test Gemini5.10 and Nabilosat )

What you need to do is read the rules instead of hijacking someones elses thread.
He took the time to start his own thread and for us to help him so you butting in will only dilute his problems.

Andy,

[digicon]

Hi andy

Post now moved to its own thread so as not to conflict with the OP's own problem

Regards

[digicon]

Hi Saalty,

Can you also measure the mA output of the Optibox Anaconda and see if this is giving enough to power the motor and LNB , Sounds very much like you not getting enough power from the 800.

Regards

[andy91]

Hi andy

Post now moved to its own thread so as not to conflict with the OP's own problem

Regards

Cheers mate perhaps im being a bit hasty
Nothing worse seeing a thread being diluted by different forum membes problems.
Not fair on the original poster.

Andy.

[saalty]

Hi Saalty,

Can you also measure the mA output of the Optibox Anaconda and see if this is giving enough to power the motor and LNB , Sounds very much like you not getting enough power from the 800.

Regards

sadly it was not mine so i can't remove the cover.. But, I set up usuals in anaconda and as I said before it works fine, with dm800 and same parameters I must corrigate manually the position on 28.2E. Now it's ok (signals more than 80%) but I have glitch on transporder ESPN UK HD. Signal quality changes between ~65-90% continiously. I read on some forums that newer revM tuner resolve this. Maybe if I change the tuner it resolve my motor problem too. I tried line amps but it doesn't work, signal on astra fall down and motor never want to move...

[digicon]

sadly it was not mine so i can't remove the cover.. But, I set up usuals in anaconda and as I said before it works fine, with dm800 and same parameters I must corrigate manually the position on 28.2E. Now it's ok (signals more than 80%) but I have glitch on transporder ESPN UK HD. Signal quality changes between ~65-90% continiously. I read on some forums that newer revM tuner resolve this. Maybe if I change the tuner it resolve my motor problem too. I tried line amps but it doesn't work, signal on astra fall down and motor never want to move...

The revision M tuner will cure the HD transponder problem not sure about the moving motor problem although 400mA is plenty to drive a diseqc motor

Good luck

[saalty]

I'm not sure that the current limit is the problem. Finally I have no idea what is the problem But I think if the current is too big for the tuner it would be reflected in measurments, I don't think that the transient time is too small that I can't see it on instrument. And maybe it will be caused when I'm for example on 1W and wan't to move on astra and it's need more torque....