Big Dish Receiver Problems

 

Receiver Problems

Test DC voltages with a volt-meter

No signal all Channels and Satellites - Measure RG-6 Sat. Input ( going to lnb ) for 16-18 volts DC. 

Dish does not move either East or West - Measure DC at motor wires ( you may need help with this ) With the remote move the west or east button while measuring the DC wires - ( usually large Red and White wires at receiver ) If no voltage present - internal problems in receiver.

Only odd or even channels on all satellites - Measure ground and 5 volt DC at polarotor connections when changing channels - no voltage - internal problems. * In some instances the pulse may be missing, due to internal component failure as well. Measure with oscilloscope for square wave pattern, or replace servo motor to check. Another field test is to hookup a spare servo to the inputs at back of receiver, disconnecting servo dish wires temporarily while conducting test. If it works there but not at dish, then bad servo or broken cable lines See Cband Help

No power on receiver - Some possible causes to power related trouble is reset breakers on back of set.  Always reset when available. check fuses in power supply area (trace line cord in) Visually check for any burned components or physical damage. All Regulators ( 3 pin type) that have clips or a screw to heat sink have to have Dc voltage on one pin or they are defective. For more advanced circuit isolation go to Advanced Trouble shooting

 

 

Not Receiver-Problems    

Before sending your Receiver out, check the above areas first. It isn't easy to determine receiver problems without measuring voltages. Listed below are areas Which Are Not!   normally receiver related.

  • Normal picture all channels but will not move to other satellites..
  • No picture: noise and snow all satellites..
  • Stops moving to another satellite.. shows actuator or motor error
  • Good picture only on odd or even channels
  • Satellite sparkle all receiver functions normal
  • Dish position or constant tuning problems
  • C band ok but no Ku channels or the reverse
  • Some remote functions work others do not
  • Remote no function

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Commercial Electronics Inc.

              12645 SE Madison St.
             Portland Oregon 97233

503-253-9618

updated 05/13/05

 

The information on this page is accumulated data and should not be used or sold for any express purpose and or without express written permission and to be used  for personal use only - copyright Commercial Electronics Inc. 1996