Re: Trying to fix an Apple II+ : blue & orange colors "sparkle" & cap with only one connection

[eccofonic <eccofonic@charter.net>]

On Mon, 21 Jan 2013 16:43:33 -0600, Michael J. Mahon <mjmahon@aol.com>
wrote:

>Both leads of any capacitor should be connected. It sounds like the ground
>side is connected. If this lead is the lead marked "negative" on the
>capacitor, then the other lead should be connected to either the +5v or the
>+12v line. Since decoupling on the +12v line is less important, I'd expect
>the positive lead of the capacitor(s) to connect to the +5v bus. 
>

As it turns out, the positive end of the cap is connected to the
ground pins. Forgot to mention that in my original post.

>WRT the intermittent color set, since it only fails when the computer has
>been off, I suspect a temperature-sensitive poor connection/contact in the
>"second color set" circuit. Look it over very carefully for a poor
>connection or contact, or a cold solder joint. Gently probing the
>connections in this circuit with a non-conductive probe may quickly reveal
>the intermittent node. Fixing this intermittent connection should restore
>normal operation. 

Thanks. I'll try that.