Various Power Supply Repairs (mostly Williams)... (By Belbenchtech)

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SAT (aka GANDHI):
Williams Power Supplies;

Problem; No +12VDC
Solution; Repl. electrolytic capacitors & repaired trace to D10...tested.

Problem; Went out.
Solution; Repl. main fuse (4A sloblo).

Problem; No power.
Solution; Repl. fuse (3.15A).

Problem; Missing voltages.
Solution; Repl. F2 (3.15A fuse).

Problem; Not enough power.
Solution; Repl. F2.

Problem; No -12V to CPU.
Solution; Repl. electrolytic capacitors & tested.

Problem; No +12, -12, +5 voltage.
Solution; Repl. U3 & tested.

Problem; Bad pwr. supply, no pwr. to printer (Wms, Bluebird P/S).
Solution; Repl. R12 & tested.

Problem; No voltages.
Solution; Repl. electrolytics, R3, & tested.

Problem; No power.
Solution; Repl. R3 & tested.

Problem; No excited electrons.
Solution; Repl. R3, electrolytics, & tested.

Problem; Won't power game up.
Solution; Repl. fuse & electrolytics on main bd...tested.

Problem; No 24 volts (bluebird pwr. supply).
Solution; Repl. electrolytic capacitors, IC1, & tested.

Problem; Printer not getting power (Bluebird P/S).
Solution; Repl. electrolytic capacitors & tested (voltage @ +23.93VDC).




Mikohn Power Supplies;

Problem; No power.
Solution; Repl. electrolytic capacitors & tested.

Problem; Display dim, loose connection or something...
Solution; NPF-all voltages present.

Problem; Not giving any power.
Solution; Repl. R1 & tested.



Atronic Power Supplies;

Problem; Missing voltages.
Solution; Repl. two 470uF capacitors on inverted bd. (domed).

Problem; Most probably good, but needs checked out.
Solution; NPF-tests good...all voltages present.

Problem; ? No tag (N.T.).
Solution; Repl. C4, C5, fan, & tested.

Problem; Bad power supply.
Solution; Repl. fan & tested.

Problem; Missing 5V pwr & others...
Solution; Repl. 470uF caps (2ea.) on inverted board...tested.

Problem; Lights dim on CPU due to P/S?
Solution; Installed new fan & tested.

Problem; Went dead.
Solution; NPF-cleaned & tested...all voltages present.

Problem; Did not work.
Solution; Repl. C21, C33, C34, IC1, & tested.

Problem; Did not work.
Solution; Repl. electrolytic capacitors, fan & tested.

Problem; Acts like it's not putting out enough power.
Solution; Repl. electrolytic capacitors on inverted board, fan, & tested.

Problem; Low power output.
Solution; Repl. the usual caps on inverted bd., fan, & tested.



Autec Power supplies;

Problem; Causing system errors(?)
Solution; Repl. SCR1 & tested.

SAT (aka GANDHI):
Condor Power Supply Schematic...

SAT (aka GANDHI):
SETEC schematic (Aristocrat...you need to zoom-in to see the component IDs, for some reason they did them in gray...).

Mike><>

SAT (aka GANDHI):
More on SETEC...

Mike><>

SAT (aka GANDHI):
(Written by Slotdoc)

I was wondering if you had any info on S2000 PS. I contacted IGT and they wont repair, you have to buy new. We are using a Autec Power Systems Model# MCP-8011. You helped me out with alot of ACSC in the past so I thought I'd hit you up again. I appreciate any info you can give. Thanks

(Replied by Mike)

Hi Slotdoc,

I've attached a schematic for the Autec P/S, I usually start by re-capping a power supply, then test again for voltage, if the voltage isn't there I start at the bridge and work my way to the outputs checking for voltage along the way.

Sorry, I'm not of more help, but I've had very few of these P/S take a dive on me.

Good luck,
Mike><>


(Appreciated by Slotdoc)

Thank You much appreciated.

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