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**Reel Slots** Gaming Machines => Universal Reel/Video Games => Topic started by: danatlvc on September 01, 2016, 09:56:55 AM

Title: Ultra Power supply need help jumping the noise filter
Post by: danatlvc on September 01, 2016, 09:56:55 AM
This PS is out of an Ultra that I have another topic on. The machine has a loud buzz humm coming out of the speaker & most always it"s the noise filter & usually goes away when the filter is removed or at least with my red dot power supplies. This power supply in this machine is diiferent & the noise filter is soldered on a board unllike the easy cutting of the 2 wire & eliminating the noise filter on a red or green dot PS. I took the board out to jump the noise filter solder joints, but there are 5 connection not 2 on each side like the ones for the older PS. My question is how do I jump the traces to elimate the filter? There is 1 2 & straight across are 3 & 4 which I assume you jump staright across. My issue is there is a fifth solder for LOAD inbetween 3 & 4 & I don't know which point to attach it to correctly to eliminate the filter & I want to do it correctly without taking any chances messing the PS up? Any help would be appreciated
Thanks,
Dan
Title: Re: Ultra Power supply need help jumping the noise filter
Post by: UNIMAN on September 01, 2016, 04:26:46 PM
That is NOT an Ultra Series power supply! At least not from the U.S.

Looks like a poker power supply or maybe overseas 240v power supply??

I'll check it out.
Title: Re: Ultra Power supply need help jumping the noise filter
Post by: Paul on September 01, 2016, 04:29:51 PM
If you have a lot of noise then maybe the filter caps need to be replaced.
Title: Re: Ultra Power supply need help jumping the noise filter
Post by: danatlvc on September 01, 2016, 07:11:35 PM
This machine is making the exact same Humm that the red & green dot PS cause that I've had and removing the noise filter always seems to work and is the easiest for a 1st step. I just don't understand the 5th  joint for the load on this filter to bypass it. Hopefully someone will know
Title: Re: Ultra Power supply need help jumping the noise filter
Post by: danatlvc on September 02, 2016, 10:15:24 AM
Here are pics of the power supply inner & out & also a pic of the filter showing the 5 point connection diagram on the label. Need to know what to connect the 5th connection to LOAD when I remove the filter?
Thanks
Title: Re: Ultra Power supply need help jumping the noise filter
Post by: UNIMAN on September 02, 2016, 06:52:46 PM
I have one of those little PS boards. (BUZZ gave it to me!)
Looks like left side is LINE #1 & #2, right side is LOAD #3 & #4, and the middle right looks like a ground with a ground symbol.   
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