[Coco] Coco 3 with problems, can anyone help me troubleshoot?

Sat Feb 11 22:35:07 EST 2012

Is there a poke I should try to slow to coco2 speeds and try that? I agree with Mark, I don't think the cassette is the problem, more likely something gone bad on the coco3.

Since cleaning the gime chip, seems like the coco3 has no other problems but this now... Just my dumb luck to buy a cassette for a computer that is working fine except for 
the cassette functions!  I will be buying a new coco3 (well new to me) as soon I can afford to. BROKE lately. If anyone wants to trade a coco3 for some pc parts or something like
that I'm all ears...

Steven

-----Original Message-----
From: Mark Marlette <mmarlette at frontiernet.net>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Sat, Feb 11, 2012 10:24 pm
Subject: Re: [Coco] Coco 3 with problems, can anyone help me troubleshoot?

Not to say that it isn't possible that the deck could be bad, it would be the 
first in over 100 units. 

What is more than likely the problem is a BLOWN SALT chip IC8, on the CASSIN . 

You would hear the audio, but wouldn't get the data in this case. 

Mark 
http://www.cloud9tech.com 

----- Original Message ----- 
From: haywire666 at aol.com 
To: coco at maltedmedia.com 
Sent: Saturday, February 11, 2012 8:35:11 PM 
Subject: Re: [Coco] Coco 3 with problems, can anyone help me troubleshoot? 

Yes but its a brand new cable. I got this cassette from cloud9, I belive it was 
brand new never opened... The cable came with the cassette... 

This is a very strange problem I don't recall ever seeing this type of problem 
before... 

Also tried cable in AUX or MIC as suggested by instructions, same thing happens 
both ways... 

Tried with volume all the way up, all the way down and in the middle... 

Steven 

-----Original Message----- 
From: Mike Rowen <mike at bcmr3.net> 
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
Sent: Sat, Feb 11, 2012 8:55 pm 
Subject: Re: [Coco] Coco 3 with problems, can anyone help me troubleshoot? 

Have you checked your cassette cable? 

On Feb 11, 2012, at 8:45 PM, haywire666 at aol.com wrote: 

> I removed and thoroughly cleaned the gime chip and socket. no gook or 
noticable grime to speak of though when I started.... 
> 
> 
> Interestingly no more garbage screen bootups so cleaning the gime chip and 
contacts did something, but when I try to CLOAD the same 
> problem happens (S character in upper left hand corner of screen) tape plays 
and machine locks in that state... 
> 
> 
> Motor on/motor off commands work. 
> 
> 
> audio on and audio off commands work. 
> 
> CSAVING appears to work. At least I think so... With audio on, I hear a bunch 
of buzzing when what I saved is played back... 
> 
> 
> Steven 
> 
> 
> 
> -----Original Message----- 
> From: haywire666 <haywire666 at aol.com> 
> To: coco <coco at maltedmedia.com> 
> Sent: Sat, Feb 11, 2012 8:20 pm 
> Subject: Re: [Coco] Coco 3 with problems, can anyone help me troubleshoot? 
> 
> 
> 1) I have a ccr radio shack cassette I just got from cloud9. 
> 
> 
> 2) When I use audio on commands I can hear stuff from the tape, but its been 
> years since I heard a data tape. Sounds right from what I recall. 
> 
> 
> 3) When I cload, the tape indeed starts, I get an S in the upper left corner 
of 
> the screen. The tape stays on forever. The machine's state never changes, even 

> when I left it for an hour. 
> 
> 
> 4) I don't have a prerecorded tape to check. I am just now getting back to 
cocos 
> (My first computer love) after many years off... 
> 
> 
> 5) I don't think its high speed poked, I boot the computer the cursor looks 
> regular speed, when I try it from clean cold boot this happens. 
> 
> 
> 6) Someone else suggested pulling and cleaning the contacts of the gime chip. 
> Just got back from radio shack, got an extraction tool... so I'm trying that 
> now. 
> Pulled the chip, both the chip and the sockets contacts look really dingy and 
> dirty... so I hope maybe thats it. I'm going to go work on this now will post 
> results. 
> 
> Thanks for everyone's help... Hopefully my poor coco3 will be feeling much 
> healthier soon! 
> 
> Steven 
> 
> 
> 
> -----Original Message----- 
> From: Arthur Flexser <flexser at fiu.edu> 
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
> Sent: Sat, Feb 11, 2012 6:54 am 
> Subject: Re: [Coco] Coco 3 with problems, can anyone help me troubleshoot? 
> 
> 
> You might narrow down things by using the AUDIO ON command to see if 
> the tape sounds normal when it is saving and when you attempt to load 
> a program. 
> 
> Also, make sure you aren't in the double speed mode; the cassette 
> routines must be patched to work properly at that speed. 
> 
> When you say it "just hangs", I assume you've verified that the tape 
> is advancing properly? Do the MOTOR ON and MOTOR off commands 
> function? 
> 
> Art 
> 
> On Sat, Feb 11, 2012 at 5:12 AM, <haywire666 at aol.com> wrote: 
>> 
>> I have a color computer 3 with some problems. I thought it was a cold solder 
> joint or something. Occasionally it would not boot right (I'd get a garbage 
> screen) The real problem however is that once its working, I can save programs 

> with csave to cassette, but when I try cload, I get an S on the upper left 
> corner of the screen and then it just hangs. 
>> 
>> Has anyone seen this before? Can anyone give me some trouble shooting tips? 
> Not being able to save programs (just bought a cassette for that purpose) is 
> driving me kind of nuts. 
>> 
>> 
>> 
>> 
>> 
>> 
>> Steven 
>> 
>> 
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