400GTO Freeze-up


Apr 22, 2001

 


----------------------------

#2316 Apr 22, 2001

Greetings everyone:



I experienced a problem last night that I haven't encountered before.

Shortly after calibrating and polar aligning my 400GTO, the controller froze

and after re-powering the mount it would point almost directly opposite

Polaris when working through the North Polar Calibration routine. I found

that the time of day had changed to 12 hours earlier and any attempts to

reset it would freeze the system. The problem got worse when any controller

selection would freeze the system.

I tried it out again this afternoon in my garage and found that the problem

only occurred when my Kendrick Dew Remover was on - even on low. I assumed

that the Dew Remover was causing a voltage drop to the mount and the problem

was somehow related to my use of a Kendrick motorcycle-type battery. To

isolate the problem, I switched power sources to the battery in my truck but

the problem continued. With either power source, the mount works fine until

the Dew Remover is turned on. I assume there is no short in the Dew Remover

since the heaters become warm and it does not blow the battery fuse.



Anyone experience a similar problem and have any advice?



Regards,

David Green

dcverde@...



----------------------------

#2317 Apr 22, 2001

I had the same problem using a kendrick system. I have since switched to

separate power supply to power the mount only. This solved the

problem...Terry Johnson ----- Original Message -----

From: "David C. Green" dcverde@...>

To: "ap-gto" ap-gto@yahoogroups.com>

Sent: Sunday, April 22, 2001 12:08 PM

Subject: [ap-gto] 400GTO Freeze-up





> Greetings everyone:

>

> I experienced a problem last night that I haven't encountered before.

> Shortly after calibrating and polar aligning my 400GTO, the controller

froze

> and after re-powering the mount it would point almost directly opposite

> Polaris when working through the North Polar Calibration routine. I found

> that the time of day had changed to 12 hours earlier and any attempts to

> reset it would freeze the system. The problem got worse when any

controller

> selection would freeze the system.

> I tried it out again this afternoon in my garage and found that the

problem

> only occurred when my Kendrick Dew Remover was on - even on low. I assumed

> that the Dew Remover was causing a voltage drop to the mount and the

problem

> was somehow related to my use of a Kendrick motorcycle-type battery. To

> isolate the problem, I switched power sources to the battery in my truck

but

> the problem continued. With either power source, the mount works fine

until

> the Dew Remover is turned on. I assume there is no short in the Dew

Remover

> since the heaters become warm and it does not blow the battery fuse.

>

> Anyone experience a similar problem and have any advice?

>

> Regards,

> David Green

> dcverde@...

>

>

> To UNSUBSCRIBE, or for general information on the ap-gto list

> see groups.yahoo.com/group/ap-gto

>

> Your use of Yahoo! Groups is subject to docs.yahoo.com/info/terms/

>

>

>



----------------------------

#2318 Apr 22, 2001

David,



Your dew remover may be putting out a pulsed waveform that is interfering

with the hand controller and computer. There may be a way to put a capacitor

across the dew heater output that would solve the problem. I bet if you gave

Jim Kendrick a call he would tell you how to fix this problem.



Joe Ewing

Conroe Texas



----------------------------

#2319 Apr 23, 2001

David,



I concur with Joe. If it is a pulse/interference from the Kendrick

you can easily add one (or several) ferrite beads to isolate the DC

supply going to the Kendrick from the mount. Radio shack has them.

Wrapping mutliple turns of the DC supply wire enhances the isolation.



Tim



--- In ap-gto@y..., JosephGEwing@c... wrote:

> David,

>

> Your dew remover may be putting out a pulsed waveform that is

interfering

> with the hand controller and computer. There may be a way to put a

capacitor

> across the dew heater output that would solve the problem. I bet if

you gave

> Jim Kendrick a call he would tell you how to fix this problem.

>

> Joe Ewing

> Conroe Texas



----------------------------

#2332 Apr 24, 2001

Thanks to Joe, Terry and Jim for the suggestions.



After speaking with both Roland and Jim Kendrick, it appears that I have the

bad combination of a weak battery and an older model (IV) of the Dew Remover

controller. Since I need a new battery, I'll try that before I have to

spring for a new controller. Jim did not think the addition of a capacitor

across the output would help although he did say that the later models of

the controller contained different circuitry to minimize this type of

problem. Both did advise me to always keep the mount power supply separate

from any other accessories, and specifically, the dew remover because of its

high current draw and on/off cycling.



I'm off to the marine store for a deep cycle trolling battery.



Regard to all,

David Green

dcverde@...







Contact Us
This Site's Privacy Policy
Google's privacy policies

S
e
n
i
o
r
T
u
b
e
.
o
r
g