Yahama CR-420 and Coke Disaster - Please Help

Discussion in 'Yamaha' started by nightcat23, Nov 9, 2017.

  1. nightcat23

    nightcat23 New Member

    Messages:
    37
    I have a yamaha cr-420. Had some guests over. You can probably see where this is heading. My *sshole cat decided he wanted to be pet and jumped onto the table. My guest, thinking ahead decided to move his can of coke onto the top of the receiver. Next thing you know, coke knocked into receiver by the cat. Stay calm and act as quick as possible. Unplugged it immediately and within 10 minutes had it open to assess the damage. Think I got really lucky. Now, I don't need anyone to lecture me on drinks and electronics, I know the risks. What is done is done. The idea here is to get the receiver back to how it was before this whole "cat incident". I totally forgot to ttake a photo to show the extent of the spill, but I found an image online, where I can at least highlight the areas where I saw some shiny-stickiness. By the time I got to it, most of it was dried, but I sopped up what i could with some paper towels. The area where the coke spilled was partially obscured by some cardboard, which probably stopped more coke entering the insides. From what I remember, that area with the thing metal "fins" are part of the FM tuning mechanism. That seems like a terrible place to get liquid into. That metal piece behind the tuning mechanism got coke on it too, and I assume inside. No clue if it made it under the PCB, but probably did. I saw some stickiness underneath a few of the resistors that I would not know how to clean either. Finally, there is some dried coke on the black piece in front of the tuning mechanism as well as on the back edge of the pcb where the antenna connectors are. So, I want to get this coke cleaned up and the receiver back into my system. Right now it is still sitting upside down. I figure the sooner I deal with it the better the chances are nothing will be wrecked. It is also worth noting the receiver was only plugged in when this happened. NOT ON. Coke can't be good sitting on electronics because of the sugar and acid. I am not an electrics expert or anything, but would it be best to get a professional to look at it and clean it up? Should I try doing what I can first? Probably water/alcohol would be best, but still not sure how I would get at some of the stuff, almost like the pcb needs to be soaked in some kind of cleaner. So, how bad is it? Is there a hope of getting him back into my system? I really have fallen in love with it's sound. Also, not sure if it makes a difference but it was never service, only contact cleaning done by me. I appreciate any help, and thank you. Here is the photo, I highlighted in green the areas where the coke went.

    Thank you.
     

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  2. Hoxtongue

    Hoxtongue New Member

    Messages:
    23
    I could see any residue turning into a messy caramel like goo that may in fact end up shorting out or causing overheating. I've seen numerous times people flushing with fresh water, letting it dry then powering it up, but I can't just get my head wrapped around that. I would suggest calling a local service company to get their thoughts, but it may have to be completely taken apart and cleaned piece by piece as this will more than likely turn into a bigger problem down the road. The CR-420 is a nice unit, you should look to find another on ebay, possibly a donor unit to have for spare parts etc...
     
  3. avionic

    avionic " Black Knights " Subscriber

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    Lots of q-tips and warm water with a drop or two of mild dish soap or simple green. Scrub adub-dub.. If the soda got into the tuning capacitor. Thats going to take a little extra care to remove.
     
    kydog likes this.
  4. nightcat23

    nightcat23 New Member

    Messages:
    37
    Alcohol in a spray bottle? Would that work without leaving residue? Worried about soap residue and such.
     
  5. avionic

    avionic " Black Knights " Subscriber

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    36,824
    Location:
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    I only clean these units up on a daily basis..
     
  6. avionic

    avionic " Black Knights " Subscriber

    Messages:
    36,824
    Location:
    Fort Dodge, Iowa
    Coke syrup is soluble with warm water. Not alcohol.
     

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