[Coco] [CoCo] Hello, newbie with new toy

[Tim Fadden]

On 3/28/2010 12:17 PM, Arthur Flexser wrote:
> I'm still not 100% convinced that the problem mightn't  be that the rompacks
> aren't making good contact.  Does alcohol actually dissolve oxidation?  (My
> chemistry is more than a bit rusty, but I doubt it.)
>
> Did you clean both the upper and the lower sets of contacts?  (One surface
> is typically harder to get to than the other.)  Try a pencil eraser on them.
>    

Yes, I second that!  Shine'm up good with a regular pink pencil eraser.  
Alcohol does not remove oxidation. A product called DeOxit works great.  
I used it on two coco3's on all sockets and chips to bring it back to 
life been working great ever since.

You might take a good look at the rompack conector on the coco. Perhaps 
someone got some tape, etc stuck in there while pulling the code off of 
some paks.

Tim


> Art
> On Sun, Mar 28, 2010 at 2:30 PM, Jerry Morelli<jamorelli at att.net>  wrote:
>
>    
>> I was going to mention that I didn't plug or unplug the cartridges while
>> power was on, but I figured my story would illustrate that I know the
>> computer.  So, yes, I know not to insert or remove while power is on.
>>
>> I tried 4 or 5 different paks.  I also cleaned the contacts on one of them
>> with alcohol but they mostly look OK.  Must be something wrong with the
>> computer itself.  Thanks Robert, for the tip on the service manual.  I'll
>> try to do a few more things to see if I can get it working, as time allows
>> (not that often)...
>>
>> I was hoping there would be something simple and/or obvious that everyone
>> would say "Oh, you have to ...."  No such luck though.
>>
>> In the meantime I'm playing with some emulators to tide me over.
>>
>> Thanks guys.
>>
>> --- On Sat, 3/27/10, Arthur Flexser<flexser at fiu.edu>  wrote:
>>
>> From: Arthur Flexser<flexser at fiu.edu>
>> Subject: Re: [Coco] [CoCo] Hello, newbie with new toy
>> To: "CoCoList for Color Computer Enthusiasts"<coco at maltedmedia.com>
>> Date: Saturday, March 27, 2010, 2:11 PM
>>
>> You mentioned cleaning the cartridge slot on the CoCo, but didn't mention
>> whether you cleaned the contacts on the Rompacks themselves.  Oxidation
>> there is a common source of problems, especially if these are ancient
>> Rompacks that haven't been used in years.
>>
>> (I assume you are also aware that Rompacks shouldn't be plugged in or out
>> with the power on, right?)
>>
>> Art
>>
>>
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