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MORTAL KOMBAT II SPEAKER BUZZ
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Topic: MORTAL KOMBAT II SPEAKER BUZZ (Read 2532 times)
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BDAVIS
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MORTAL KOMBAT II SPEAKER BUZZ
«
on:
December 11, 2006, 04:50:24 pm »
I am a complete Newb. I just got a MKII game for Christmas. It is in great condition. The only problem is I have a speaker buzz that wont go away. It gets worse when there is white on the screen (?!).
I checked and all my ground wires appear to be fine. I would greatly appreciate any help..Im lost.
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tommy
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Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #1 on:
December 12, 2006, 09:36:31 pm »
It could be bad pcb, it could also be some radio interference somewhere, it's hard to say from here.
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_) (V) (-)
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There's supposed to be an earth shattering KaBoom!
Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #2 on:
December 13, 2006, 08:16:45 am »
Does it sounds like 60 cycle hum? (The type you'd get from ungrounded equipment) Or does it change frequency? (ramp up or down)
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BDAVIS
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Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #3 on:
December 13, 2006, 08:28:01 am »
Well, it gets worse depending whats on the screen (?!). For example, when "Midway Presents" comes up it's worse. Somebody suggested it may be my marquee light. I took the bulb out but I didnt actually unhook it.
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RayB
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There's my post
Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #4 on:
December 13, 2006, 03:55:46 pm »
Housefly?
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NO MORE!!
BDAVIS
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Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #5 on:
December 13, 2006, 04:28:56 pm »
Nice one...I wish it was, I at least know how to stop that.
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Q*Bert_OP
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Oh yes, we did!
Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #6 on:
December 13, 2006, 05:18:20 pm »
It Sounds...hehehe...no pun intended...well...I think your power supply might have AC ripple?
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WTB: The Grid by Midway (2001), looking for 2 or more complete games, and large marquee
SirPeale
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Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #7 on:
December 14, 2006, 07:15:35 am »
If you unplug your monitor do you still hear the sounds?
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BDAVIS
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Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #8 on:
December 14, 2006, 03:57:35 pm »
Thanks for the suggestion. Im going to try that tonight.
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tommy
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Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #9 on:
December 18, 2006, 11:11:07 pm »
Also check that the mainboard wires are fully seated in the sound board (power and ribbon). That's kinda obvious but worth a look.
Maybe also make sure all Roms are firmly seated and the main board second half PCB is connecting on all pins. I had a graphic problem from that half board on the main board not fully connected.
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BDAVIS
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Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #10 on:
December 19, 2006, 12:28:44 pm »
I unplugged my monitor and still had the buzzing noise. I am going to look over the boards and chips again to..I may have overlooked something. I have a new board coming, I wanted a backup..
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Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #11 on:
December 19, 2006, 01:07:43 pm »
Power supply perhaps?
I've known transformers to buzz sometimes.
Don't know why but I just got this image of
Optimus Prime drinking a case of Bud!
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BDAVIS
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Re: MORTAL KOMBAT II SPEAKER BUZZ
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Reply #12 on:
December 19, 2006, 01:33:47 pm »
Thats great.
How difficult is a power supply to change? If I keep going like this I will have a completely new game...over what's probably a bad ground.
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