11 Jul
1998
11 Jul
'98
6:19 p.m.
Anyone ever heard of a full length 16 bit ISA AT type card that has
amonst all the componets a Motorola 68000 (16mhz) processor? It says
it's made by Microcom, Inc....made in USA
Is this some sort of card to get Apple/Mac compatibility?
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
11 Jul
11 Jul
6:39 p.m.
New subject: LCD repair
OK, hardware gurus, how about some remote diagnostic help: PowerBook 160
(my first and only Mac), a bunch of black vertical lines of varying width
on the LCD (different patterns on the two panels that make up the
display), but otherwise the display looks good (all the bits in the right
place).
Video RAM? LCD controller? Cable problem on the laptop side? Cable
problem on the LCD side? Bad LCD? Repair FAQ?
I have a volt meter, a logic probe, a fear of high current, but I enjoy
the occassional high voltage zap. What's my next move?
-- Doug
7:46 p.m.
New subject: LCD repair
No high voltage on an LCD, it's a low volt device that the presence or lack
of voltage causes the cystals to align or scatter, causing balck or clear.
There's two types and I don't need to go into the diffs in field effect and
the other.
Your outlook on what might be at fault is good. This is one of those things
that someone that does this a lot could probably snap their fingers and have
the answer. I personally haven't had that much experience with that machine
and would have to dig in the schematics and do some hands on to try to
isolate it.
Doug Yowza wrote:
OK, hardware gurus, how about some remote diagnostic
help: PowerBook 160
(my first and only Mac), a bunch of black vertical lines of varying width
on the LCD (different patterns on the two panels that make up the
display), but otherwise the display looks good (all the bits in the right
place).
Video RAM? LCD controller? Cable problem on the laptop side? Cable
problem on the LCD side? Bad LCD? Repair FAQ?
I have a volt meter, a logic probe, a fear of high current, but I enjoy
the occassional high voltage zap. What's my next move?
-- Doug
--
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
8:46 p.m.
New subject: LCD repair
The backlight is a little bit different story and I must admit I forgot
all about the backlight. It's low voltage in essence but holds a good
jolt like a capacitor or xenon flash tube.
Doug Yowza wrote:
On Sat, 11 Jul 1998, Russ Blakeman wrote:
--
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
No high voltage on an LCD
I guess high is a relative term, but after shorting out a WinBook
back-light with my finger, I thought somebody hit me with a Taser.
-- Doug 
7:58 p.m.
New subject: LCD repair
OK, hardware gurus, how about some remote diagnostic
help: PowerBook 160
(my first and only Mac), a bunch of black vertical lines of varying width
on the LCD (different patterns on the two panels that make up the
display), but otherwise the display looks good (all the bits in the right
place).
Video RAM? LCD controller? Cable problem on the laptop side? Cable
problem on the LCD side? Bad LCD? Repair FAQ?
I think since LCD's have conductive traces on the glass, that to drive
a column of pixels with the AC voltage necessary would involve bonding
a flexible-circuit ribbon to the conductive traces along the edges.
I would think that is the most likely culprit (maybe it got un-bonded),
and probably next to impossible to repair (due to being microscopic traces,
and lack of the right conductive adhesives, and general messiness).
Then again, I have seen small LCD's that used a rubber sandwich (alternating
thin layers of conductive rubber and non-conductive, stacked up to make
a strip as wide as the LCD) to connect PC board traces with the transparent
conductive stuff on the glass, so in that case maybe it'd just be a matter
of cleaning and tightening.... If you try to fix it, you should probably
be prepared to buy a new LCD JIC that becomes necessary. (Disclaimer:
seldom have I ever tried to repair a LCD, never a laptop LCD, and never
have I succeeded... I'm just guessing...)
--
_______ KB7PWD @ KC7Y.AZ.US.NOAM ecloud(a)goodnet.com
(_ | |_) Shawn T. Rutledge on the web: http://www.goodnet.com/~ecloud
__) | | \__________________________________________________________________
8:24 p.m.
New subject: LCD repair
OK, hardware gurus, how about some remote diagnostic
help: PowerBook 160
(my first and only Mac), a bunch of black vertical lines of varying width
on the LCD (different patterns on the two panels that make up the
display), but otherwise the display looks good (all the bits in the right
place).
Are the lines stationary? Wait a minute the lines are running top to
bottom? Hmmm, not quite what I was thinking. I suspect the panel is going
bad. Also what kind of an environment have you been using it in?
Speaking of bad PowerBook panels, does anyone know if it's possible to
replace a backlight? I've got a PB520c (It's a classic even though it's
not 10 years old), and I used it so much while in the Navy that I wore the
backlight out (I was using it about 12 hours a day for 6 months while on a
cruise, what can I say, I was sitting in a computer room by myself
babysitting a mainframe, and learning Mac programming).
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)ix.netcom.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| and Zane's Computer Museum. |
| http://www.dragonfire.net/~healyzh/ |
12 Jul
12 Jul
3:01 a.m.
New subject: LCD repair
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13 Jul
13 Jul
7:35 a.m.
New subject: LCD repair
His panel is not going bad - The Mac Powerbook 170 I;ve got does this when first powered
on, then clears the screen - I think it's a video ram test.
-------
11 Jul
11 Jul
7:42 p.m.
On Sat, 11 Jul 1998, Russ Blakeman wrote:
Anyone ever heard of a full length 16 bit ISA AT type
card that has
amonst all the componets a Motorola 68000 (16mhz) processor? It says
it's made by Microcom, Inc....made in USA
No, but I have one called a PC-68K made by Costanza and TLM Systems which
looks for a disk with OS/9.
- don
Is this some sort of card to get Apple/Mac
compatibility?
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
donm(a)cts.com
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
Chairman, Dina-SIG of the San Diego Computer Society
Clinging tenaciously to the trailing edge of technology.
Sysop - Elephant's Graveyard (CP/M) - 619-454-8412
*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*
see old system support at http://www.psyber.com/~tcj
visit the "Unofficial" CP/M Web site at http://cdl.uta.edu/cpm
with Mirror at http://www.mathcs.emory.edu/~cfs/cpm
8:57 p.m.
This doesn't appear to have any disk I/O function. See the reply I did with
more details.
Don Maslin wrote:
On Sat, 11 Jul 1998, Russ Blakeman wrote:
--
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
Anyone ever heard of a full length 16 bit ISA AT
type card that has
amonst all the componets a Motorola 68000 (16mhz) processor? It says
it's made by Microcom, Inc....made in USA
No, but I have one called a PC-68K made by Costanza and TLM Systems which
looks for a disk with OS/9.
- don
Is this some sort of card to get Apple/Mac
compatibility?
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
donm(a)cts.com
*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
Don Maslin - Keeper of the Dina-SIG CP/M System Disk Archives
Chairman, Dina-SIG of the San Diego Computer Society
Clinging tenaciously to the trailing edge of technology.
Sysop - Elephant's Graveyard (CP/M) - 619-454-8412
*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*--*
see old system support at http://www.psyber.com/~tcj
visit the "Unofficial" CP/M Web site at http://cdl.uta.edu/cpm
with Mirror at http://www.mathcs.emory.edu/~cfs/cpm 
8:35 p.m.
Anyone ever heard of a full length 16 bit ISA AT type
card that has
amonst all the componets a Motorola 68000 (16mhz) processor? It says
it's made by Microcom, Inc....made in USA
What kind, if any, connectors does it
have? Any other important chips(like
UARTs, transceivers, controllers, etc...)?
Is this some sort of card to get Apple/Mac
compatibility?
I doubt it, but anythings possible...
--------------------------------------------------------------
| http://members.tripod.com/~jrollins/index.html - Computers |
| http://www.geocities.com/Area51/Lair/1681/ - Star Trek |
| Orham(a)qth.net list admin KD7BCY |
--------------------------------------------------------------
8:56 p.m.
It's got a 9 pin d-sub on the spine plate like a cga or token ring card and a
label next to it that says 252-1C TR. On the board (upper right) it has a big
block component like 2.5" x 2.5" roughly that says Silcom 5000 series. to the
left of that it has a TI chip that looks like an oversized 386SX in a mount
(like the 387 coprosser gets pushed into) that's numbered TMP380C16PQL. On
the top edge, about middle it has a dip switch bank of 1-8 and next to that it
has a reset type push switch. Of course the M68000P12F processor is on the
lower left and it also has 2 female headers on the back with plastic spacers
to acccept add on board or boards. There are two Mosell MS62256L-10PC chips on
it too. There are other smaller DIP chips and a Motorola MC68901P on the board
as well.
The MicroCom part number is 05-0003402-0010
I must admit I haven't tried to search out to see if MicroCom is even in
existance any longer but I should.
John Rollins wrote:
--
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
Anyone ever
heard of a full length 16 bit ISA AT type card that has
amonst all the componets a Motorola 68000 (16mhz) processor? It says
it's made by Microcom, Inc....made in USA
What kind, if any, connectors does it
have? Any other important chips(like
UARTs, transceivers, controllers, etc...)?
Is this some sort of card to get Apple/Mac
compatibility?
I doubt it, but anythings possible...
--------------------------------------------------------------
| http://members.tripod.com/~jrollins/index.html - Computers |
| http://www.geocities.com/Area51/Lair/1681/ - Star Trek |
| Orham(a)qth.net list admin KD7BCY |
--------------------------------------------------------------
10:31 p.m.
It's a Token Ring card. The 252-1C TR marking and the TMS380C16 chip give
it away. The 380C16 is a Token Ring processor chip. The Silicom 5000 sounds
like some sort of filter. The 62256 are RAM chips.
It's got a 9 pin d-sub on the spine plate like a
cga or token ring card and a
label next to it that says 252-1C TR. On the board (upper right) it has a big
block component like 2.5" x 2.5" roughly that says Silcom 5000 series. to the
left of that it has a TI chip that looks like an oversized 386SX in a mount
(like the 387 coprosser gets pushed into) that's numbered TMP380C16PQL. On
the top edge, about middle it has a dip switch bank of 1-8 and next to that it
has a reset type push switch. Of course the M68000P12F processor is on the
lower left and it also has 2 female headers on the back with plastic spacers
to acccept add on board or boards. There are two Mosell MS62256L-10PC chips on
it too. There are other smaller DIP chips and a Motorola MC68901P on the board
as well.
--------------------------------------------------------------
| http://members.tripod.com/~jrollins/index.html - Computers |
| http://www.geocities.com/Area51/Lair/1681/ - Star Trek |
| Orham(a)qth.net list admin KD7BCY |
--------------------------------------------------------------
10:35 p.m.
I have a feeling you're right after wading through tons of nothing on MicroCom's
site, which is a division of Compaq. Hopefully they'll send me some info docs on it
this week so I positively ID this monster card. Thanks.
John Rollins wrote:
It's a Token Ring card. The 252-1C TR marking and
the TMS380C16 chip give
it away. The 380C16 is a Token Ring processor chip. The Silicom 5000 sounds
like some sort of filter. The 62256 are RAM chips.
--
--------------------------------------------------------------------
Russ Blakeman
RB Custom Services / Rt. 1 Box 62E / Harned, KY USA 40144
Phone: (502) 756-1749 Data/Fax:(502) 756-6991
Email: rhblake(a)bbtel.com or rhblake(a)bigfoot.com
Website: http://members.tripod.com/~RHBLAKE/
ICQ UIN #1714857
AOL Instant Messenger "RHBLAKEMAN"
* Parts/Service/Upgrades and more for MOST Computers*
--------------------------------------------------------------------
It's got a 9 pin d-sub on the spine plate like
a cga or token ring card and a
label next to it that says 252-1C TR. On the board (upper right) it has a big
block component like 2.5" x 2.5" roughly that says Silcom 5000 series. to the
left of that it has a TI chip that looks like an oversized 386SX in a mount
(like the 387 coprosser gets pushed into) that's numbered TMP380C16PQL. On
the top edge, about middle it has a dip switch bank of 1-8 and next to that it
has a reset type push switch. Of course the M68000P12F processor is on the
lower left and it also has 2 female headers on the back with plastic spacers
to acccept add on board or boards. There are two Mosell MS62256L-10PC chips on
it too. There are other smaller DIP chips and a Motorola MC68901P on the board
as well.
--------------------------------------------------------------
| http://members.tripod.com/~jrollins/index.html - Computers |
| http://www.geocities.com/Area51/Lair/1681/ - Star Trek |
| Orham(a)qth.net list admin KD7BCY |
--------------------------------------------------------------
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14 comments
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