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Title: WMS UNI-750-1 Power Supply Post by: SliceDice on May 17, 2011, 09:03:47 AM For two weeks i have been working on repairing the WMS UNI-750-1 power supplies for the bluebird 2. There seems to be more to just replacing the exploded transistors and U206 and U205. Need help :99-
Title: Re: WMS UNI-750-1 Power Supply Post by: juanob1 on July 03, 2011, 03:51:54 PM I need help too for wms-750-1power supply ,I need schematic manual
Title: Re: WMS UNI-750-1 Power Supply Post by: SliceDice on July 15, 2011, 08:06:46 AM The symptoms of the power supplies that have the exploded Q5 and U206 on control board, these are the components that will need to be replaced. the major problem is, all the power supplies blow different but this is a start.
Main Board: U1, D5, D17, D18, D20, D21, Q5, R4, R2, R123 Control Board: U204, U205, U206, Q2, Q4, Q5, D3, D4, D5, R41, R85, R86, R87, R88, R89, R113, R114 Worst power supply to work on. It takes about 3 to 4 hours to work on one. Good Luck Title: Re: WMS UNI-750-1 Power Supply Post by: SliceDice on July 15, 2011, 08:09:07 AM Found a schematic to look at.
Title: Re: WMS UNI-750-1 Power Supply Post by: superparts on November 17, 2011, 09:19:22 PM I have these PS if anyone is still interested.
Title: Re: WMS UNI-750-1 Power Supply Post by: thanh lieu on August 29, 2013, 04:56:29 AM How much for one?
camthanh1974 at hotmail.com Title: Re: WMS UNI-750-1 Power Supply Post by: superparts on October 26, 2013, 10:41:12 AM I have a bunch of these PS. How many would you like? PM me and lets proceed.
Title: Re: WMS UNI-750-1 Power Supply Post by: Lucien77 on November 09, 2013, 05:34:10 PM I have this type of Power supply .Q6 in the main board is blown, Zener diode (D3) in the controller is open and controller IC (U205) is shorted.
Has anyone been able to replace the controller board or know if its possible to replace?I think it is better than checking each component. :103- Title: Re: WMS UNI-750-1 Power Supply Post by: EliSitas10 on February 06, 2014, 10:44:07 PM On the side board, IC UCC28513Dw needs to be replaced a lot. Also, the 8pin IC ( 3845B ) will go pretty often as well. These do suck to work on. There are like 3 diodes and transistors around the IC ( 3845B ) that will blow out too. Then after that, you must replace the 4 outputs located on either side of the large heat sink that sits in the middle of the main board. Sometimes, the 3 legged fets in between those outputs blow out too. Like I said, they are not fun to do. I have overhauled these units before and repalced damn near everyhting....only to put them into the game and have it blow out again. You win some...ya lose some.
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