[Coco] CM-8 monitor

[Dave Philipsen]

Agreed.  I have fixed a number of monitors over the years and, as Art 
says, many times it's a bad capacitor.  The environment inside an 
enclosure with a hot CRT is not good for capacitors.  And, generally but 
not always, you can tell when the cap is swollen or looks like it has a 
leak.

BTW, larger capacitors like electrolytics or tantalums have a polarity 
marked on the outside.  Just make sure you match them up correctly.  
Electrolytics have a nasty way of popping like firecrackers if they get 
hooked up backwards.

Dave


On , Arthur Flexser wrote:
> There's always the strategy of opening it up and checking for 
> capacitors
> that appear swollen, no schematic required.  Electrolytic capacitors 
> that
> have died of old age is a very common cause of failure in old monitors.
> 
> Be aware when replacing these that some capacitors have a polarity,
> contrary to what many of us learned in school.  (I forget why this is.)
> 
> Art
> 
> On Tue, Aug 4, 2015 at 2:49 PM, Joel Ewy <jcewy at swbell.net> wrote:
> 
>> On 08/04/2015 01:14 PM, George Ramsower wrote:
>> 
>>>  Is there someone that can repair a CM-8 monitor?
>>>  I have two and they both died within about two months, on two 
>>> different
>>> cocos. Darnit!!
>>>  So, now I'm stuck with a TV and it is horrible.
>>>  I did get a converter for RGB/VGA board but I haven't had a chance 
>>> to
>>> play with it....yet.
>>> 
>>>  However, I do need to get a CM-8 working so I can see what I'm 
>>> doing.
>>> 
>>> George R.
>>> 
>>> 
>>> I've got a couple of them as well, and want to keep them working as 
>>> long
>> as possible.  Is there a schematic in the archives?
>> 
>> JCE
>> 
>> 
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