4 replies to this topic

[pedro3178]

Hi again guys,

I got advice before on changing the float amount on my barcrest rio grande machine by changing the dip switches on either the main board or game card.

Guys how do i know what the float is set to before and when i change? the only reason i knew before was because i dumped the hoppper.

Sorry if this is a silly question.

Would also like to know if anyone has any advice on very high electrical noise coming through machine speaker? ( not same machine ) when i unplug speaker and restart, machine is quiet but connect speaker and there is such a horrible electrical noise! could it be the switch mode psu???

Edited by pedro3178, 12 January 2011 - 07:27 PM.

[DJDONKEY]

Hi again guys,

I got advice before on changing the float amount on my barcrest rio grande machine by changing the dip switches on either the main board or game card.

Guys how do i know what the float is set to before and when i change? the only reason i knew before was because i dumped the hoppper.

Sorry if this is a silly question.

Would also like to know if anyone has any advice on very high electrical noise coming through machine speaker? ( not same machine ) when i unplug speaker and restart, machine is quiet but connect speaker and there is such a horrible electrical noise! could it be the switch mode psu???

I've answered your first question on your other post (I think!)

If the 2nd machine is an MPU5 (eg Barcrest), then I have had the same problem. What I did, was put a resistor in series with the speaker which reduces the power to the speaker and hence the hum, then turn the volume up in the machine settings.

It is likely a bad MPU board, they are cheap on e-bay, so you could get another

[pedro3178]

I've answered your first question on your other post (I think!)

If the 2nd machine is an MPU5 (eg Barcrest), then I have had the same problem. What I did, was put a resistor in series with the speaker which reduces the power to the speaker and hence the hum, then turn the volume up in the machine settings.

It is likely a bad MPU board, they are cheap on e-bay, so you could get another

Hey there!

Thanks for the advice, I will give this a try, yeah the boards are cheap so if the resistor doesn't solve it then I will get a new board.

Thanks for the reply!

[pedro3178]

Can I just ask what value resistor you used?

[pedro3178]

Removed a MPU5 board from another machine and noise is still there also tried other PSU, HMMM, not tried the resistor yet so thats next!