Re: //c and a messed up picture.

["Roger Johnstone" <rojaws@mac.com>]

In article <msc1983-2103021737210001@192.168.1.101>, msc1983@mac.com 
(Matthew Carpenter) wrote:

> Hello,
>
>    Today I was trying to use a //c which I recently got running with an
> old NEC video monitor I had used prior on a C64.   When I hooked it up
> with one video cable the picture would not show on the screen unless I
> pulled up on the plug on the //c's end of the video cable.  With another
> cable I found that the parts where there was nothing but text would be
> blurry unless I messed with the cable connection.  When a part with
> graphics came up, both the text and the graphics would look fine, but as
> soon as it went from a screen with graphics and text to just text it would
> go blurry and I would have to jiggle the connection again to get the text
> to be easier to read.  I'm wondering why it would behave this way.
> --
> -MSC
> AIM: MSC1983MSC         ICQ: 42442595
> "Stand Back! I have an open Power supply and I'm not afraid to do
> something stupid with it!"

I have a IIc which showed the same symptoms. The cause was a broken video
socket (It looked OK, but desoldering it from the board revealed that one of
the two pins had in the past broken and someone had repaired it by jamming a
bit of wire in to act as a new solder pin, but over the years it had
tarnished and was making poor contact). This is a common fault with RCA
phono sockets. Since they are normally only attached to the board by two
soldered pins, and the plug is often wriggled whenever it's inserted or
removed, the pins or the solder joint tend to break after years of use.

The last time I used my IIc the problem reoccurred, but this time at the
monitor end! (I must get around to fixing it)

--
Roger Johnstone, Invercargill, New Zealand

Apple II - FutureCop:LAPD - iMac Game Wizard
http://homepage.mac.com/rojaws
________________________________________________________________________
"That's the thing about people who think they hate computers. What they
really hate is lousy programmers."

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