Re: I killed it.. :-(

[sloopy malibu <sloopy@amishinfo.com>]

yeah i can remember back in the early 90's when i was having problems with
an atari 130XE (ok so i wasnt always an Apple II user ;') i had a problem
with a bad ram chip... because stuff cost so much i usually had spare boards
laying around i would scrounge chips, sockets, etc from... i had to remove
the 16 ram chips from the mainboard then 16sockets from a pc ram card i
had...  when i finally got to college and i had a class on soldering my prof
had us practice by removing chips from old PC-XT mother boards... i finished
a whole m/b in one class (about and hour and a half) and he was impressed
because the board had no damage on it whatsoever... and he was doubly
impressed cause all i used was a radio shack soldering iron and a radio
shack de-sold iron even tho we had nice weller solder/desolder stations at
skool...

those were the days :')

sloopy.


> From: "Mark Cummings" <figjams@primus.com.au>
> Organization: CWO Customer - reports relating to abuse should be sent to
> abuse@cwo.net.au
> Newsgroups: comp.sys.apple2
> Date: Thu, 02 Aug 2001 19:43:38 +1000
> Subject: Re: I killed it.. :-(
> 
> Congratulations, with success like that you now qualify as a technical
> wizard on your particular Apple compatable. Pretty soon you will be offering
> free advise to others :)
> Unsocketed chips are a real pain on the later II's like the IIGS and
> Platinum IIe. I fixed a ROM-3 not so long ago, but unfortunately had to
> desolder about 10 RAMs before I got it. I really wanted to socket those
> RAMs, but lack of 18 pin IC sockets on a Sunday prevented me from doing so,
> and I still had to proove the fault by soldering the good ones back in. So I
> am likely to have to go through the hell again at some point in the future,
> except next time I will be prepared.
> 
> Good luck with your Z80 and Language card, let us know how you go.
> 
> Mark
> 
> 
> ----------
> In article <Pine.GSO.3.96.1010801234844.14469J-100000@top.coli.uni-sb.de>,
> Linards Ticmanis <ticmanis@coli.uni-sb.de> wrote:
> 
> 
>> Well thanks for all your help, I finally solved it with trial-and-error,
>> replaced all those chips that I had another one of (luckily they're all
>> socketed), one by one, and a lonely old 74LS02 was the culprit. Since it
>> sits right next to the RAMs, I assume that it has to do with RAM access,
>> so you people who told me to check RAM were almost on target.
>> Unfortunately the Language card and the Z80 card seem to have bit the dust
>> as well, inserting any of them will prevent the system from working, as
>> before. Guess I'll have to go TTL chip shopping. Unfortunately the Z80
>> doesn't have socketed chips, I intend to change that now. After I have
>> checked them in another mainboard that is.
>> 
>> Linards Ticmanis
>> 
>> [Rest der .sig zensiert wegen ihrer D?mlichkeit]
>> 
>> 
>> On Tue, 31 Jul 2001, Mark Cummings wrote:
>> 
>> 
> 
>