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orenda635 · 07-08-2004, 07:22 PM

Been trying to fix the servo glitches in my radio. Just have one quick question. If a crystal, say in the transmitter was damaged, would it cause the servos to glitch?

It's a Futaba Skysport 4 (4VF) radio.

VE1FH · 07-08-2004, 07:25 PM

Most definitely would.

Fractured or poorly connected crystals cause the receiver to momentarily lose frequency control .. therefore no signal and therefore glitches.

But there are many other potential causes ... dirty/broken feedback pot; intermittent power or signal or ground connections; busted antenna connection; cracked circuit board, etc, etc, etc....

John

orenda635 · 07-08-2004, 07:51 PM

I've checked for all that. I have two sets of equipment for my two planes. I even tried another transmitter. Cleaned all the inside, checked for damage. The only constant thing I used in all my tests is the crystal on the TX so logically it's causing the problem. The problem definately seems to be caused by a weak signal.

VE1FH · 07-08-2004, 09:09 PM

So you're saying you swapped the Tx crystal into another radio and had the same problem?

Sure sounds like it's the rock ...

John

orenda635 · 07-09-2004, 02:09 PM

Went and bought a new crystal today. Popped it in and now the radio works seamlessly.

Thanks for the help.

VE1FH · 07-09-2004, 02:18 PM

Quote:

Originally Posted by orenda635

Went and bought a new crystal today. Popped it in and now the radio works seamlessly.

Way cool ... get out to the field!

John

07-08-2004, 07:22 PM	#1
orenda635 RCC Senior Contributor I am: Mike P Join Date: Jun 2004 Location: Milton, Ontario Feedback: 0 / 0% Posts: 504 Total Props: 0	Would a Burnt Out Crystal Do It? Remove this ad - become a site supporter! Been trying to fix the servo glitches in my radio. Just have one quick question. If a crystal, say in the transmitter was damaged, would it cause the servos to glitch? It's a Futaba Skysport 4 (4VF) radio.
	.

07-09-2004, 02:09 PM	#5
orenda635 RCC Senior Contributor I am: Mike P Join Date: Jun 2004 Location: Milton, Ontario Feedback: 0 / 0% Posts: 504 Total Props: 0	Went and bought a new crystal today. Popped it in and now the radio works seamlessly. Thanks for the help. __________________ Currently driving: HPI Savage X SS 4.6 / Traxxas Mini E-Revo Find me a the Milton Fair Grounds any sunny weekend.
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07-08-2004, 07:25 PM	#2
VE1FH Guest Join Date: Mar 2004 Feedback: 0 / 0% Posts: 54 Total Props: 0	Most definitely would. Fractured or poorly connected crystals cause the receiver to momentarily lose frequency control .. therefore no signal and therefore glitches. But there are many other potential causes ... dirty/broken feedback pot; intermittent power or signal or ground connections; busted antenna connection; cracked circuit board, etc, etc, etc.... John
	.

07-08-2004, 07:51 PM	#3
orenda635 RCC Senior Contributor I am: Mike P Join Date: Jun 2004 Location: Milton, Ontario Feedback: 0 / 0% Posts: 504 Total Props: 0	I've checked for all that. I have two sets of equipment for my two planes. I even tried another transmitter. Cleaned all the inside, checked for damage. The only constant thing I used in all my tests is the crystal on the TX so logically it's causing the problem. The problem definately seems to be caused by a weak signal.
	.

07-08-2004, 09:09 PM	#4
VE1FH Guest Join Date: Mar 2004 Feedback: 0 / 0% Posts: 54 Total Props: 0	So you're saying you swapped the Tx crystal into another radio and had the same problem? Sure sounds like it's the rock ... John
	.

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