i am not that familiar with this board, but sounds like failing electrolytic capacitor.
To start i would check the +12 and -12v cold(assuming it uses those voltages) and then check again once warm.
(Topic ID: 159032)
You're currently viewing posts by Pinsider barakandl.
Click here to go back to viewing the entire thread.
2 weeks later
Quoted from scupbucket:Getting closer figuring this out I think. Here's what I did just in case anyone has a similar problem down the road.
I replaced the 47uf caps at C15, C18, C34, C36, C38, and replaced the 1uf tantalum caps at C46 and C47. While I was at it, I also corrected R23 and R24 to 150k ohm from the 56k ohm that were originally in place. Finally, I read about adding a 4.7 ohm / 2 watt resistor to the backbox speakers to bring the mids and highs down a bit allowing more bass to the foreground... holy crap what a HUGE difference!!! I can hear Arnold much better, I'm hearing sounds in the game I didn't before, very solid (not cabinet shaking) bass, and I can keep the volume up around 9-10. Sounds are clear even at higher volumes. Before I'd have it at 7 and it was just noise.
It still gets a tad louder after warming up but not a dramatic difference as before and the sound isn't all high end nails on a chalkboard. I still have some poking around to do...
Nice. Sounds like you got it covered. I wouldnt worry about it to much. Heat can change resistance of components. I know in my car if i crank up the volume i notice it quiets down after a few minute.... probably because the amps are heating up.
I will have to look into adding the resistors to the speakers. My Getaway probably uses the same setup.
Andrew
Promoted items from Pinside Marketplace and Pinside Shops!
Cleveland, OH
You're currently viewing posts by Pinsider barakandl.
Click here to go back to viewing the entire thread.
Reply
Wanna join the discussion? Please sign in to reply to this topic.
Hey there! Welcome to Pinside!
Donate to PinsideGreat to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
