The Aussie Pinball Arcade

Aussie Pinball Forums => Technical Matters => Pinball Repairs / Problems & Assistance => Topic started by: studley67 on May 12, 2012, 08:23:30 AM

Title: "see saw" noise during attract mode
Post by: studley67 on May 12, 2012, 08:23:30 AM

can anyone help,I would like to get rid of the "see saw" noise during attract mode on my 78 bally.
can i use ferrites?where do i put them?caps maybee?
PLEASE HELP   ^&^

Title: Re: "see saw" noise during attract mode
Post by: Strangeways on May 12, 2012, 12:25:42 PM

I've never heard this noise. Could it be the speaker ? Swap out the speaker with a know working one and report back. Also check the groundstrap is in place to the speaker base.

Could also be the caps on the soundcard.

Title: Re: "see saw" noise during attract mode
Post by: studley67 on May 12, 2012, 12:57:05 PM

the see saw noise is the change in pitch that comes through the speaker when the displays toggle between highscore and last game score.

Title: Re: "see saw" noise during attract mode
Post by: Homepin on May 12, 2012, 01:06:41 PM

I think I know the noise you mean - it was there from new so I think you will need to live with it....

Title: Re: "see saw" noise during attract mode
Post by: studley67 on May 12, 2012, 01:20:41 PM

at least it will be original.lol.thanks mike &^&

Title: Re: "see saw" noise during attract mode
Post by: Strangeways on May 12, 2012, 02:44:48 PM

I barely notice the sound on mine. I have to go under the game to hear it.

Title: Re: "see saw" noise during attract mode
Post by: Mr Pinbologist on May 12, 2012, 05:15:39 PM

I know the noise you mean  *%* *%*

This sometimes happens due to grounding issues with the soundboard, check the mounting screws for the soundboard, make sure they are tight, or even remove them one at a time and see if the level of the noise changes.

On my KISS, i found that the noise was fairly loud with both screws done up but if i removed one of the screws it was greatly reduced... sounds weird to say it i know but it DID help reduce the noise!! I can hear this sound on both KISS and 6M$M if i mess with the sound board mounting screws, though i didnt need to leave a screw out on 6M$M  !@#

Another thought i had, being a ground related problem, could also be the main soundboard connector ground connections (which i didnt touch on KISS btw)  !@)

  

Title: Re: "see saw" noise during attract mode
Post by: beaky on May 12, 2012, 06:09:56 PM

Quote from: Strangeways on May 12, 2012, 02:44:48 PM

I barely notice the sound on mine. I have to go under the game to hear it.

now is that a sign of your age Nino or does studley67 have super hearing.  :lol

sorry Nino i just had to throw it in

maybe Studley's is louder than usual?

Title: Re: "see saw" noise during attract mode
Post by: studley67 on May 16, 2012, 04:22:52 AM

new caps and connector,much quieter.or am i'm going deaf thanks guys. ^^^

Title: Re: "see saw" noise during attract mode
Post by: Strangeways on May 16, 2012, 10:22:37 AM

Quote from: beaky on May 12, 2012, 06:09:56 PM

Quote from: Strangeways on May 12, 2012, 02:44:48 PM

I barely notice the sound on mine. I have to go under the game to hear it.

now is that a sign of your age Nino or does studley67 have super hearing.  :lol

sorry Nino i just had to throw it in

maybe Studley's is louder than usual?

Sorry Beaky, missed that - What did you say  %.%

Quote from: studley67 on May 16, 2012, 04:22:52 AM

new caps and connector,much quieter.or am i'm going deaf thanks guys. ^^^

Good one Damien  ^^^