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JR XF421 EX Controller

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JR XF421 EX Controller

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Old 09-02-2018, 02:42 PM
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Mini Pistons
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Default JR XF421 EX Controller
I have a JR XF421 EX, that I got used, that has a diode broke off. I stuck it back in the holes it came from labeled: B C E. It’s located on the rearmost tan circuit board not the inner green ones. Anyone know what that diode is for?Controller still works but I have horrible twitching from several servos. Thanks!
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Old 09-02-2018, 03:13 PM
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I can’t post picture because I’m too new of a member.
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Old 09-02-2018, 04:37 PM
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If the diode is close to the charger port, it could be part of the battery charge circuit. Easy test for that is if your battery charges up.
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Old 09-03-2018, 05:55 AM
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Originally Posted by Appowner
If the diode is close to the charger port, it could be part of the battery charge circuit. Easy test for that is if your battery charges up.

its not part part of the charging port. Controller charges and works fine from what I can tell.
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Old 09-03-2018, 07:58 AM
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Originally Posted by Mini Pistons



its not part part of the charging port. Controller charges and works fine from what I can tell.
Well, keep posting until you can get a picture of it up here. Or PM the picture to me and I'll post it. Assuming that would work in this forum.
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Old 09-03-2018, 08:49 PM
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Help me get this thread to 10 posts so I can post a picture.
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Old 09-03-2018, 08:49 PM
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Old 09-04-2018, 04:33 PM
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Old 09-04-2018, 04:33 PM
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