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Author Topic: Donkey Kong Way Too Loud  (Read 3600 times)
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randywhatson
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« on: February 16, 2015, 08:57:41 pm »

Hey guys,
A few months back, I disconnected my speaker wire from my so I could play at night. When I went to connect it back, the sound is so loud I thought my speaker (and eardrums) were gonna blow. I turned down the knob on the monitor… tried again… and same results. Even with the sound all the way down on the monitor, there is some harsh whirling/feedback sounds (like if you have a stereo maxed out with no music playing).
What is wrong? Is there another speaker knob I don’t know about? Bad ground? Something blown. Please help… the game just isn’t the same without sound. Also, I am a total amateur. So please explain in laymans terms.

Scott
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iankellogg
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« Reply #1 on: February 17, 2015, 08:31:59 am »

Make sure all of the connectors are attached to the audio board on the monitor and if you have a multimeter check the volume pot resistance to see if the thing works.
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randywhatson
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« Reply #2 on: February 17, 2015, 06:01:33 pm »

Well, it works, right? I mean it's too loud, not silent? Is there something on the board that adjusts sound?
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iankellogg
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« Reply #3 on: February 17, 2015, 08:28:35 pm »

No the only audio setting I on the back of the monitor
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randywhatson
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« Reply #4 on: February 17, 2015, 08:55:37 pm »

I saw a similar post about a DK jr. machine. The advice wsa to buy a new audio board repair kit from Bob Roberts. I guess I will have to do that. Is it hard to change one of these out?
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iankellogg
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« Reply #5 on: February 17, 2015, 09:03:30 pm »

no it isnt very hard, 9 parts on a small board. I just finished packing 5 orders for that very kit tonight.
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VertexGuy
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« Reply #6 on: February 17, 2015, 09:07:50 pm »

I saw a similar post about a DK jr. machine. The advice wsa to buy a new audio board repair kit from Bob Roberts. I guess I will have to do that. Is it hard to change one of these out?


Ill do you one better, I have 3 spare rebuilt already.
BTW I don't care how nice your audio board is, you can still pick up that noise.. a lot of people learned to live with that extra white noise.
I went on ebay and ordered 4 EZ20 audio extra rebuild kits filthy cheap.
takes about 20 mins to clean up the board and replace all the caps and shit.
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randywhatson
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« Reply #7 on: February 17, 2015, 09:37:34 pm »

It's actually really cool fixing these things. Yesterday, I fixed the joystick... a part I broke while fixing the joystick... installed the high score save kit and realized my monitor is an absolute beast, once I discovered the "brightness" knob.

Thanks for the help guys.
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VertexGuy
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« Reply #8 on: February 17, 2015, 09:58:52 pm »

I tube swapped mine a few weeks ago with a burn free tube.
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