[amsat-bb] Spid RAS rotor issue

[kb2mjeff at att.net]

Looks like the elevation up relay is fried in my RAS controller box. I'm 
going to take Harald's advice and replace all 4. Before I order the parts 
has anyone else experienced a relay failure with their RAS? If so what relay 
did you replace it with, make, part # ?

I'm at this time running the controller and rotor at 13.8 volts, was going 
to try 28 volts to the rotor with the Spid approved mod, but now not so sure 
:-)

73 Jeff kb2m

-----Original Message----- 
From: Harald
Sent: Tuesday, July 10, 2018 7:07 PM
To: kb2mjeff at att.net
Subject: Re: [amsat-bb] Spid RAS rotor issue

Hello Kb2m jeff,

I don't know if you have ELFA over there but from elfa the part
nr. is PCB power relay 12VDC 400mW 137-44-376.

It is more or less a standard relay.

They are a littel bit hard to get out of the pcb but I used
solder sucking wick as they called it, you may have to resolder
some points to get it totally free.
Not too much heat, ,,,,take some breaks :-)

good luck in finding them.

Harald
la7qta



Wednesday, July 11, 2018, 12:34:25 AM, you wrote:


> Hi Harald. thank you for the reply. I'm sure my control box has a failed
> relay also. I hear a faint click when going both ways in azimuth, but only
> hear a click on down elevation. So I'm sure the up elevation relay is
> defective. I'm going to take your advice and swap out all four relays. 
> Would
> you be so kind to give me a part number and a source of the relays you
> replaced with. Thanks in advance....

> 73 Jeff kb2m


> -----Original Message----- 
> From: Harald
> Sent: Tuesday, July 10, 2018 3:07 PM
> To: kb2mjeff at att.net
> Subject: Re: [amsat-bb] Spid RAS rotor issue

> Hello Kb2m jeff,

> I recently had the exact same problem but the rotor was running.
> To get it out of that position I took the plug out of the az
> conn. and put the conn. from ez into az and drove it all the way
> around again. they are equaly pinned. test which way you have to
> rotate with the az buttons,,,,(or connect 12v with the right
> polarity to the ez plug directly),,,,,,, much easyer to use the az conn.

> I replaced the 4 relays, zeroed the controller and all is working
> again.

> The relays are some cheap ones so the best is to change them
> anyway.
> I have used it for 3 years and had truble before with those.

> Hope this will help in solving your problems !

> Best 73's

> Harald
> LA7QTA

> PS: questions,,,just ask !


> Tuesday, July 10, 2018, 12:32:26 PM, you wrote:

>> I’m having a problem with my RAS rotor at my winter home. When I turned 
>> it
>> on yesterday, after an absence of about 2 months the elevation went into 
>> a
>> complete backflip when powered up, and is jammed against the roof with an
>> elevation reading of 195 degrees on the control box.  I’m at my Florida
>> home for just a few weeks to do some fishing, so before starting to work
>> on it to maybe speed up the repair process a bit I’m asking here if 
>> anyone
>> else had this problem. When the roof dries off I plan on going up there
>> and remove the antennas before trying to move the rotor, to diagnose.
>> Right now the azimuth will turn, but the elevation is stuck, it wont move
>> up or down. I’m hoping it is just jammed into the roof, once unstuck
>> hopefully all it would need is a re-calibration. Thanks for any useful
>> information....

>> 73 Jeff kb2m



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