|
Dish Count Errors: Always adjusting East/West Tuning?
Any excessive movement in dish-transition will cause count
errors. Check all of the above 7 step antenna check first. Replace
actuator sensor or
Replace
Actuator
No Odd or Even
channels
Most common cause is defective servo
motor (small blue box at feed assembly) 3 wires - red (5 Volts) black
(ground) and white (pulse). Moved the receiver lately? Look for
loose wires at back of receiver and loose or frayed ends? (the three wire group
should have continuity to servo motor at dish). The servo could be tested at
the receiver. Replace
Replace Servo
Loud Squeal when changing
channels
This is caused by defective servo motor ( usually blue in
color mini-motor assembly located on feed horn) This is a common problem. It's
a good idea to get another one so as to make your neighbors happy. (high pitch
squeal) Replace
Servo
Sparkle on most all
Satellites
Alignment or weak-lnb:
The lnb is bad if you get channel 1-9 ok and 10-24 is poor.
(or visa versa) Replace as necessary and make sure the blue circular cover on
scaler feed is there. There are three or four support legs holding the
feed. Tighten as needed. Check for obstructions
in circular feed assembly (hornets nests
etc... no water please ) Re-attach scaler cover. Check for loose bolts at
dish mount assembly and also lnb as it attaches to feed assembly. Tighten as
needed. Should fix problem. ReplaceLnb
Loud Noise
outside
When changing channels: defective
servo-motor replace as necessary. Loud squeal when
going to satellites. Use light oil on extended part of actuator assembly. If
the noise occurs when moving dish, there is wear inside the actuator. Remove
down to thread stock and regrease, or take the easier route and replace
the motor. "Noise occurs when dish moves" is caused by the motor
requiring internal cleaning and lubrication. (make sure ball joint motor
bracket swivels. lift motor up, should move freely) Excessive rust associated
with noise.
No Dish movement or Actuator
Error
Moved Receiver lately? Check for broken or loose wires, Reprogram as necessary.
No Dc Voltage at Motor wires when
changing satellite position, look for a loose wire at receiver, large Red
and White wire should be 36Volts when selecting new satellite.
No 36volts Dc when using remote to change
sats. Problem in Receiver. Look for loose
wires to the motor leads (large Red and White or small Orange, Green,
Brown) check all connections for continuity at either end. (motor or
receiver) Hint: twist leads together, two at a time and measure
resistance at opposite end with ohm meter. Since the sensor circuit only
requires two leads you have a spare, in case you find one line open or broken.
The worst case is replacing entire ribbon line. Reconnect when complete.
If voltage is present but no movement.
Replace
Actuator
Dish moves No Pix
on all Satellites
First do 7 step Antenna check:
Measure voltage at lnb for 15-17 Volts DC at connector. If no
power is present, broken connection ( or no b+ power from receiver)
Measure receiver end, (Sat Input) for same voltage. If present, the coax line
is cut. You might try using the other ku coax (the extra coax line on the
ribbon cable) If you have Ku just swap both ends at the lnbs and rcvr, for test
purposes. Then, replace single coax or ribbon cable as needed. If all seem
normal, Replace
lnb
Some Satellites - Sparkle most all Channels
This is usually caused by mis-aligned dish. Some easy tests
are to go to the sat. that is weak, and have someone watch the picture
quality while you lift the center edge of dish up about an inch for 5 sec. and
pull down on the center edge same amount of time. If there is more
sparkle both ways, alignment is ok. (for that sat) Next, take a visual
test, looking thru the dish, aligning the feed to the center (finding the look
angle) Take a visual at that angle. Are there obstructions? This is
usually the problem.
Receiver Related Trouble
Need a Dc volt meter to make some
checks as outlined at Receiver
Problems. Go to your instruction manual for specific problems
associated with it. Here is a list of 24 manufacturers and a complete
guide on how to use each. 24 Receiver
Manufacturers Setup Guides
|