more IGT PE plus questions

[bally bob]

Recently got the machine and want to shut off the double down feature. I have a couple of dumb questions before I proceed. Posters said to make sure there are zero credits on the machine before accessing the white self test button, I assume to access all the menus. Currently credits are on the machine, but whenever the door is opened it says zero credits. When the door is closed the credits are restored. So do I need to play off the credits off or run off credits? Also sound level was too low, so adjusted blue thumb wheel knob, now sound is too high. Seems like the blue plastic thumb wheel is turning but not making contact with the center adjustment part of the volume control. I can spray it with some contact spray cleaner? Probably will need to remove the board by just pulling it straight out by the 2 black knobs. Is it a good idea or required to take any precautions before removing it, like attaching a grounding strap? 

[knagl]

Yes, you need to have zero credits on the machine to access all of the options.  You may be able to access the double-up option while there are still credits on there -- I'm not 100% sure though.  Can't hurt to try.  If not, you must play off or cash out all of the credits in order to access all of the settings in the self-test menus.

I have seen that glitch you described on some PE+ software, where the credit meter on screen turns to "0" when the door is open, but then the correct number of credits is restored once the door is closed.  It's a display glitch.

Before going to contact cleaner, just trying rotating the blue volume knob back and forth a number of times to wear off any oxidation on the potentiometer.  If that doesn't work, then yes, you could remove the MPU board and try a small amount of contact cleaner.  IMPORTANT: you must turn the machine's power OFF when removing or inserting the MPU board or you can cause damage.  A ground strap isn't necessary, although it's never a bad idea if you have one handy.

To aid with volume adjustment, use the self-test setup screens to get to the screen that shows either "MUSIC" or "TONES" for the sound setting.  Use the jackpot reset keyswitch on the side of the machine to switch between the two options.  Every time you switch it to "MUSIC", it will play a short melody -- that's a good time to adjust the volume pot to a desired level.  Repeat the keyswitch turn to get it to play another melody to fine-tune your volume setting.