| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 413.1 | | PRNSYS::LOMICKAJ | Jeff Lomicka | Mon Mar 06 1989 11:35 | 4 |
| Sounds like the system got rattled in transit. Older 520's had a
problem where chips would work loose. Take it apart and reseat the
socketed parts, and see if that helps.
|
| 413.2 | | IAMOK::CROWLEY | know where you stand in a Hellhole!! | Mon Mar 06 1989 12:48 | 11 |
|
re .1
Thanks. What precautions should I take to make sure I don't
zap any chips into oblivion via the static charge I'll have
after shuffling across my living room floor? :^)
Ralph
|
| 413.3 | Use a few precautions | TEA::PETERS | Don Peters, CTS1-2/H6, 287-3742 | Mon Mar 06 1989 13:20 | 12 |
| Some people advise putting a grounding wire from your wrist to a ground point
on the circuit board. I didn't do this when I reseated the chips in my ST.
Instead, before I touched any chip/circuit, I first touched a ground point,
so as to discharge any static charge I might have picked up. I also made
sure I was not in a dry/low humidity environment, and moved as little as
possible in my chair so as to avoid generating static charge.
These steps apparently worked, as my ST, which was becoming more and more
troublesome, worked flawlessly after that.
|
| 413.4 | | IAMOK::CROWLEY | know where you stand in a Hellhole!! | Tue Mar 07 1989 08:55 | 12 |
|
re .1, .3
Thanks for your help. I opened it up last night, reseated all the
chips in sockets (even though non appeared to be unseated or loose)
closed it up and, voila! I've got a working ST again! Thanks for
the suggestions.
Ralph
|
| 413.5 | Another mechanical weakness. | IOENG::JWILLIAMS | Welcome to the Bush League | Wed Mar 08 1989 17:56 | 18 |
| I had a sticky problem with a 1040. I thought it was the socket
problem, as everytime I went to reseat the chips, it worked again
for a while ( beginning to sound strange? ).
Well, after opening the thing up twice in one weekend, I decided
to have a closer look and ripped the thing apart.
There is a ground shield on the underside from the motherboard.
I worked this off the motherboard ( it's a real tight fit ) and
there is this thin piece of cardboard that is used as an insulator.
Ah ha, I said to myself, those soldered pins sticking out on the
underside of the motherboard are long and sharp, and that flimsy
piece of insulation looks mighty thin.
I stuck in a piece of decent weight cardboard between the motherboard
and the shield, and no problems since.
John.
|