Question about Motorola (6200510300010) Power Supply

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Motorola DC power Supply (0-40volts, 0-40 amps cc) M/N R101AA, S/N 261CCl0469

I have an old Motorola DC power Supply. At first it would not power up so I changed the power Transistors (4each) on the back of the unit. Now it powers up and gives me 62 volts DC output with no control of voltage or current control. Can any one point me in the right direction? Maybe even a location of schematics. Thank you for any help: Rick the Machinist

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Re: Motorola DC power Supply (0-40volts, 0-40 amps cc)...

I have the book w/ schmetics, call me jim 740-891-4831

Posted on Jul 10, 2012

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Re: Motorola DC power Supply (0-40volts, 0-40 amps cc)...

There is a book, "Electronics for Inventors" (check Amazon), that will give you the basics of power supply design and electrical components including general scematics. Without more info on what the PS is supposed to produce in the way of voltage and current, there's not much more to be said.

Posted on Mar 23, 2007

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No Power

Dear Sir,

I assume, you have voltmeter with you.
Set VOM to DC 20 V range.
Remove the Power Supply from cabinet. Be sure you have proper earth in your house/workshop.
On the 20/24 pin main connector of your power supply, short the pins carrying green & black wire.
Hook your voltmeter -ve on any black pin of the connector permenantly.
& then connect the mains power cord to your power supply.
If your power supply is ok, this shall start the fans of the power supply on & running. Now you can check the voltages on different pins. There is a sticker on your power supply showing the normal voltages on every wire.
If you don't see any / normal volatges, your power supply needs repairing. You can buy a new one/ repair existing.

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