[TowerTalk] [Bulk] Re: G-2800DXA lightning damage

[Grant Saviers]

Having been into the 2800 control box for mechanical repairs, I 
understand why Yaesu doesn't repair them.  It's a dog's breakfast of 
interconnections among 3 pcbs.  The schematics are just as bad, 
spaghetti signal flows.  The servo control to drive the pointer drive 
motor is complex.  The gear train behind the pointer is not for the 
fumble fingered and the o-ring used to drive the pointer is just this 
side of comical.  The whole thing has to come apart for replacement when 
they stretch or dry rot.  My advice is to buy a Green Heron if the 
control box is bad.

The rotator mechanics OTOH seem pretty well made and designed (except 
for getting the 500 ohm pot precisely aligned).

Grant KZ1W


On 9/3/2014 3:08 PM, Edward Sawyer wrote:
> To my knowledge, Yaesu does not repair the rotor or the control box.  They
> will sell you the control box but its not cheap AT ALL!  They will also sell
> the stand alone rotor without the control box.
>
>   
>
> To properly debug the problem, it is always handy to have an extra Yaesu
> control box so that it can be swapped out to see if the problem is the box
> or the cable/rotor.  I have actually found the rotor itself to be darned
> reliable.  But the boxes are incredibly fragile to all kinds of stuff.  I
> have a grave yard of a number of boxes and have a winter project in mind to
> try and make one good or maybe two good boxes out of them so I have spares.
> Its not a matter of IF you need to replace a Yaesu rotor control box - it's
> a matter of when.
>
>   
>
> Ed  N1UR
>
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