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Subject: Re: [newmellotrongroup] Re: M400 motor rebuild

From: lsf5275@aol.com
Date: 2010-07-27

Good work!
 
Unless the brushes are nearly gone, I wouldn't replace them. Clean the commutator and leave them be, they are well seated. I have yet to have to replace any so far. If you remove them, make sure you restore them in their exact positions.  
 
Here is are a couple of power supply photos showing how nicely they clean up. Typically I test the old capacitors to see if they will meet specs. I have a capacitor tester and if they work well, I leave them. I am more concerned with the capacitors on the WME boards or old PMLs and the caps on old SMS boards. You might consider replacing that old Bulgin mains socket with a nice IEC socket.
 
In a message dated 7/26/2010 8:32:00 P.M. Eastern Daylight Time, fazeka@gmail.com writes:
 



Hi Frank,

Thanks for your concern, but no money was wasted =). I rewired the power supply for an SMS type controller card, as this pic shows (before the new caps were installed).

http://img534.imageshack.us/img534/5347/m400powersupply.jpg

Note: this shot was also taken before the mod to move the fuse before the power switch.

Now, what about those motor brushes? =)

Thanks,
Chris

--- In newmellotrongroup@yahoogroups.com, lsf5275@... wrote:
>
> Chris, if you have any kind of SMS control card and you replaced more than
> the two caps closest to the front (or farthest from the mains socket), you
> wasted money. They don't do anything.
>
>
> In a message dated 7/26/2010 8:22:32 A.M. Eastern Daylight Time,
> fazeka@... writes:
>
> I just finished recapping the power supply, now I turn my attention to the
> motor.
>