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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Actuator/Positioner problem
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<blockquote data-quote="007.4" data-source="post: 1049319" data-attributes="member: 175445"><p>Many thanks for your reply.</p><p>The output from the positionner is 3A. So does that mean I need a 100ohm, 100w rated resistor?</p><p>I've had a root through my "bits" box and do not have any high wattage resistors at all. I'll look in the garage tomorrow for some auto bulbs instead.</p><p></p><p>I'll also try and cobble together 3 x 12v batteries in series to test the jacks.</p><p></p><p>In the mean time I've tested the output with the meter in A/C mode (no load). It varies for the couple of seconds there is output and seems to flash momentarily to about 12v.</p><p></p><p>The MSP 200 service manual says to check the bridge rectifier (which is a KBL403) so I removed the board and (without load) this appears to be fine.</p><p>(0.48v and 0.503v on either side but zero across the A/C pins and zero in reversed direction). </p><p></p><p>Also, the manual states </p><p></p><p>"The output from the rectifier is unfiltered and unregulated DC to drive the motor. The output is nominally 36v DC but the actual voltage will vary depending upon load conditions"</p><p></p><p>Does this mean the voltage regulator is OK and just goes high (as expected) without a load?</p></blockquote><p></p>
[QUOTE="007.4, post: 1049319, member: 175445"] Many thanks for your reply. The output from the positionner is 3A. So does that mean I need a 100ohm, 100w rated resistor? I've had a root through my "bits" box and do not have any high wattage resistors at all. I'll look in the garage tomorrow for some auto bulbs instead. I'll also try and cobble together 3 x 12v batteries in series to test the jacks. In the mean time I've tested the output with the meter in A/C mode (no load). It varies for the couple of seconds there is output and seems to flash momentarily to about 12v. The MSP 200 service manual says to check the bridge rectifier (which is a KBL403) so I removed the board and (without load) this appears to be fine. (0.48v and 0.503v on either side but zero across the A/C pins and zero in reversed direction). Also, the manual states "The output from the rectifier is unfiltered and unregulated DC to drive the motor. The output is nominally 36v DC but the actual voltage will vary depending upon load conditions" Does this mean the voltage regulator is OK and just goes high (as expected) without a load? [/QUOTE]
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DISH SETUP: Single sat, Multi-Sat & Motorised
Actuator/Positioner problem
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