SG-2100A moving but only sometimes

[booji]

I have just installed a 2100A Motor with a Twinhan (azurewave) AD SP400 pc card (disecq 1.2 compatable). I am driving a 1M lenson heath dish on 15M at CT100 cable.

At first everything went fine then the dish stopped moving. After trying out lots of things I got it working again but it still only moves intermittently.

After about a week of trying to get it working properly I have failed as the motor still only works about 30% of the time.

I have noticed that when I drive the dish manually that sometime it moves correctly and other time it moves a short distance (a short 100ms pulse). If i keep my finger pressed for 5 seconds it will pulse again. The LED flickers orange after each time a pulse is made. I have also preformed this operation over diseqc using DVBViewer.Pro on the postioner menu and exactly the same thing happen. This can happen at any part over the dish arc. It can work fine for 10 minutes then will only pulse for 10 to 20 tries then suddely work again. When the motor works it seems to drive the dish well and wont stop untill it's position is reached, its just the initial start where I have problems.

I have measured the voltage it the motor and it drops from 13.7 to 13.3 when the motor is going. The motor and lnb seems to draw between 300 to 400mA when driven.

I have tried everything to get this going, reteminated connectors, using a shorter test co-ax cable, removing the LNB etc but without any luck.


Any ideas?