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Old 02-16-2007, 04:37 PM   #1
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Default need some servo help

i have a ft b4 with a lrp 7.1, spektrum rec, and a 19t motor. today i was putting in a new jr z650m servo in it. when i turned it on, the servo keeps moving back and fourth. pack is charged and new bats in the trans. any ideas?
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Old 02-16-2007, 04:42 PM   #2
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make sure your transmitter is on. i know that sounds kinda dumb but, have to throw that out. also if that is a digital/coreless servo it will move a bit at times. also make sure you have it plugged in the right since jr seems to like using orange/brown/and red for its wire colors. may have it plugged in backwards too.
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Old 02-16-2007, 05:01 PM   #3
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yes, the radio is on. and it is a analog servo
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Old 02-16-2007, 05:06 PM   #4
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is it constant jumping around? and other than that i can only say it may be plugged in backwards. also your reciever is binded with your transmitter right. your esc is working right? if your turning the car on first then the radio it takes about 3 to 5 secs. for them to link up, if it is still happening after that then, you may need to call jr after your checked these other things.
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Old 02-16-2007, 05:53 PM   #5
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jr just say ship it back. everything worked before the old servo was removed 2 weeks ago
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