| Igt S2000 sound problem - humming and static |
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StatFreak: Here is a brief summary of this common problem and some pictures that help illustrate the solution. Note that there is a picture of the 47k resistor in-line with one of the speakers. This is actually the place to put the 10k pots (potentiometer) if they are what is needed. The 47k resistor would be used on a Vision as described by idesign. Thanks to idesign and DJH for their solutions and to mowtiss for starting the thread. Note that these posts are not in the order originally posted. « Reply #81 on: April 30, 2007, 06:07:58 AM » Quote from: idesign date=1177938478 I just got back from Atlantic City this weekend. All the S2000 machines that I played that had enhanced sound and especially backlit reels had sound problems (severe hum). It's not that apparent during the normal hours when the casino is filled with lots of players since the ambient noise level is pretty high. Yesterday morning the casino was pretty empty and the hum was very apparent in these machines. So, the bottem line is that it's normal for the S2000 to have this annoying hum if it has a multimedia lit board and especially if it has backlit reels too. For the home user the fix is to use a 10K pot on each speaker if you have stereo sound or if you have mono sound a single 10K pot will work depending upon how your machine is wired. If you have a Vision machine, a 47K resistor on the output side of the LCD will quiet the hum down. Oh, and yes, I came back with some of their money for a change. :63- :10- :22- :41- :65- NOTE: It has been stated by many that the best sound is achieved with a volume of 6 or 7 on the machine. If one uses the 10k pots it is best to set the level in the menus first and then adjust the pots for the desired volume to get the lowest signal to noise ratio. You need to use 1/2 watt or better components. A 1/4 watt pot or resistor will burn out. « Reply #82 on: April 30, 2007, 08:07:58 AM » Quote from: DJH date=1177945678 I can confirm that I only noticed the hum with the MML2 boards and sound simm installed. I think they boost the audio output to let everyone hear their 1990 sounds! Out of about 20 S2000/Visions I have worked in the last 6 months all of them get the hum with the MML2 board / Simm installed. So the 10k pot is the trick to lower the audio output. The same reason I disconnect the audio amp board but the 10k put is the trick. I am sure that IGT would have to go through a huge process to introduce the same fix for little ROI. |
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StatFreak: « Reply #30 on: April 25, 2007, 10:51:08 PM » DJH Quote from: DJH date=1177566668 For all folks who get an S2000 with the MML2 board and sound simm you are going to have hum unless you do the 47k mod which I have started to install on all games. The sub speaker is connected I know that for sure. The upper amp board is not needed and it's only an inline AMP and has nothing to do with making the game stereo. The S2000 games before 2003 did not come setup for stereo only mono but can be changed to stereo just by setting it up like the late model. See the pictures, the first is an s2000 from 2003 and the last picture is the connector from the 2000 model. They changed around everything and went full stereo sometime in late 2002. The last picture is of the connector that mowtisss has which is mono from the factory (they feed the bottom speaker off the top which is mono from the start). The splice was done to rewire the bottom speaker which is looped from the audio amp. The audio amp (older style) just adds more hum and noise, the 47k inline resistor and or using a 10k trim pot does the trick. Lowers the over driven output from sound level 1. You are just turning down the audio below level 1 which gets rid of the hum and raising it from the system with the actual audio up. The funny part is if you don't install the SIMM the hum goes away. When the MML2 board is active with the SIMM (it's not when there is no simm installed) the audio level is normal. I think they wanted to boost the improved sounds in a casino without having to ask the techs to raise it etc. Karma to idesign for figuring it out. |
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StatFreak: « Reply #31 on: April 25, 2007, 11:03:29 PM » Quote from: mowtisss date=1177567409 So do i put the 47k resistors on the white wires. ? inbetween the wire from the speaker the the next plug? « Reply #32 on: April 25, 2007, 11:10:04 PM » Quote from: DJH date=1177567804 Yes White wire that goes to the speaker, just set it up as an inline splice. You can wire the left and and right speaker as stereo but I see little benefit as the sound seams 100% the same. « Reply #36 on: April 26, 2007, 04:43:35 AM » Quote from: idesign date=1177587815 The audio amp does make a difference if you add the LCD to an S2000 and upgrade it to a Vision. The stereo sound is outstanding as it is generated by the sound files in the flash card in the LCD. |
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StatFreak: « Reply #41 on: April 26, 2007, 02:46:17 PM » Quote from: idesign date=1177623977 Cut the wire where the red arrow is and wire the resistor in-line for each speaker. |
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StatFreak: « Reply #45 on: April 26, 2007, 02:50:26 PM » Quote from: mowtisss date=1177624226 here is how im doing it i haven't connected them with all the stuff yet just quickly so i can show you.. « Reply #46 on: April 26, 2007, 02:54:16 PM » Quote from: idesign date=1177624456 Looks correct to me. And when you connect the wires again you do get sound out of the machine? and that is a 47K resistor? NOTE: This is the correct location for the splice but with an S2000 without the Vision or an audio amp, a 10k pot is needed here, NOT a 47k resistor. This should be done for both speakers. Mowtiss ended up replacing these resistors with pots to solve his problem. |
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