[Hallicrafters] ASTRON supplies

[Jim Wilhite]

I have a RS-70M that started giving trouble early this week.  The 
voltage would pin the meter to the right for a bit then the supply 
would kick off.  That made me take the lid off and look and I found 
that the fan was wired wrong.  Both leads from the fan were across 
the same side of the AC line.

I don't know if the supply heated enough to cause the problem or 
not, but I hope that is what the deal is.  I initially though the 
fan was bad because I couldn't get it to come on using a heat gun so 
I disconnected it to try with a cheater cord.  Fortunately it worked 
so I don't have to replace it, just rewire it correctly.

The reason I say fortunately I don't have to replace it is because 
the fan is pop riveted on the case not attached with screws and 
nuts.  Drilling that thing off would be a real chore.  I think most 
of the troubles with Astron supplies is the regulator board.  The 
regulator chip is in a socket, which you cannot see unless you take 
the board loose.

Jim/W5JO



----- Original Message ----- 
From: "Roger (K8RI)" <hallicraftersgroup at rogerhalstead.com>



> Another data point..points.
>
> I purchased a RS 35M.  The voltage was near the limit on the 
> meter, but that is still within to stated tolerance. After about 
> 15 minutes of use it kicked out. After that It would only kick on 
> and off. As it was just out of the box the dealer replaced it. 
> This one ran well...for several hours until the fan kicked on. It 
> sounded like a motor boat.  A quick check showed nothing stuck in 
> the fan.  I removed it and found that when rotating the fan back 
> and fourth the blades were catching on "something", but I could 
> slide a piece of paper all around the blades so it's inside the 
> motor housing.  I called Astron and they said they'd get a new fan 
> out to me right away.  That was over a month ago.