[Premium-Rx] Looking for Cubic 3030 PS module and or repair source

[Jack Smith]

Check with Murphy's Surplus and see if he still has any power supply 
modules in stock. http://www.murphyjunk.bizland.com/

The one I repaired had a bad controller chip, more details at 
http://www.cliftonlaboratories.com/april_2008.htm -- scroll down about 
half way.

It is possible to work on the module out of the  receiver, but it must 
be done with the appropriate safety precautions and suitable test gear. 
In general switching power supplies are a major pain in the backside 
because you don't have (in many cases) a partially working power supply 
that can be sequentially debugged.

Jack K8ZOA


On 12/27/2011 5:43 PM, Ka9p at aol.com wrote:
> Greetings.
>
> I'm looking for either:
>
> 1) a PS module for a Cubic 3030 (assy num. 2140-1124)
>
> 2) a good Cubic mechanic; or
>
> 3) a good idea what to check.  The module fault light is lit,  infrequently
> the PS will work and light will go out after cyling through the  modules,
> and stays working as long as powered up, but when left sitting  more than
> about an hour the PS module will not restart 99 times out of a  hundred. The
> module behaves the same way in either slot in the 3030 and the  other PS
> module performs well in either slot so it's definitely the  module.
>
> Appreciate any ideas or help - I started after the electrolytics with my
> ESR meter either and found the meter dead (groan)  ohmmeter shows nothing
> interesting - I'm hoping trouble does not come in threes :))
>
> Thanks, Scott
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