[Coco] Fwd: Re: Disto Super II controller repair

[Tim Fadden]

Bruce,

Ok, I got it stable now, by replacing the ROM socket.

I get no head movement when doing a format, so perhaps the 7416 like you 
say.  Worth a shot.

So, how would one go about checking them, besides just replacing them?

And, I was wondering, whats the difference between the 7416, and 7406. 
Both are available.

Cheers.

On 5/29/2017 8:04 PM, Bruce W. Calkins wrote:
>
>
>
> -------- Forwarded Message --------
> Subject:     Re: [Coco] Disto Super II controller repair
> Date:     Mon, 29 May 2017 22:01:24 -0400
> From:     Bruce W. Calkins <brucewcalkins at charter.net>
> To:     Camillus Blockx <camillus.b.58 at gmail.com>
>
>
>
> A common failure on the Tandy controllers was one or both 7416 chips on
> the output side.  Removing the chips and socketing a pair of 7406 chips
> was the cure.
>
> I see there are two 7416 chips on the output side of my Super Controller
> II.  I would suggest starting with checking them.
>
> Bruce W.
>

-- 
Tim Fadden
"Hey Schmidt, don't forget about the six P's.
Proper Preparation Prevents Piss-Poor Performance!"