[amsat-bb] G5500 left turn relay failure

[k.swaggart at charter.net]

My G5500 control box won't command the rotor left, but right works fine. No
voltage to the #4 connector when I press "left", but if I put some pressure
on the relay the voltage intermittently returns. So, guess the relay
contacts are dirty.

 

Looking at the schematic it looks like both the right and left relays are
the same, but use different connections. So. thinking I'll just remove and
the two and swap relays. (This unit has been in daily use since 2002!)

 

Are these relays available from Yaesu or someone in the US? Did a quick
Google and DigiKey search but didn't find them.

 

Just noticed there is a little lid on the top of the relay. When I popped
that open there is a lot of black residue on the inside of the lid and I
just might be able to clean the contact!

 

Ken, W7KKE