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Re: TRS-80 Model 100 Board Replication

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Daniel <me@sc1f1dan.com> writes:

> I guess I've decided to do a board replication project starting on the
> M100. At this point, I'm looking for a dead model on ebay but no one
> wants to sell for less than $100 with shipping it seems. I'd pay $50 for
> a 'for parts' unit.
>
> Success will define this project if I can get some assistance. I have
> designed pcb's in the past but for simple projects. This will be, by
> far, my most complex effort to date. And I hope a success in this
> project will lead to more restoration projects in the future.
>
> Daniel

A little update on the project. Some unexpected car issues led to major
spending that effectively put an end to my pursuits until payday. My
budget was completely blown. 

The board is sitting in the closet until I can order that solder 
vacuum from amazon. Found one for just north of US $100 that seems to
have the features I desire. My budget was effectively blown for a few
months but this tool will be a necessity at this point. No cigars
until May/June. I'm hoping this will free all the components from their
pcb jails unharmed. Fingers crossed the chips come out nice and clean
for easy re-use. At this point, it has taken north of five hours to
remove a handful of components and frankly, what an epic waste of time
that turned out to be. I need proper tools if this continues.

Of the things on my list to obtain is a sheet of soft foam that I can
cut down for safe chip storage.

Meanwhile, I started going over the service manual this evening and
listing the chips on a clean spreadsheet. I am hoping to find modern
off-the-shelf equivalents for all of them. This pursuit will likely
spawn mod projects in the future - optimistic that this will lay good
groundwork. Some ideas I've received would make the M100 into a
completely different machine. My purpose now is to simply replicate the
boards with a growing desire to restore this dummy device once done.

Layer two: The service manual is a low quality scan of a low quality
manual. So, I will be replicating the service manual to a clean PDF with
clear diagrams and selectable text. No one wants to do it, so I will.
<major work>

Layer three: website. The idea is inspired by the activities devoted to
the C64. I'm going to create a large image map of the main board such
that a mouse hover over the components will show a small popup of the item
info. I will have to study how to do image maps, since it's been forever
since i've seen one. The site will be written in basic html with, at
most, early javascript. The idea is to have the page loadable on retro
systems and textmode browsers for as much readability as possible.

Regarding the victim device I obtained for this project, the PCB seems
in good enough shape for re-use. The system certainly saw a ton of abuse
including a high heat environment. Some resistors and few of the disc
capacitors literally fell to pieces after some gentle handling. I had
the board on a silicon mat while melting a solder joint. When I lifted
it to flip it around, half the disc of a cap was sitting on the
mat. Literally flaked off like it was a dead leaf. It may necessitate a
completely new stock of electrical components on a rebuild project. I
will NEVER sell that device after all the work it will demand. I may
also retro-brite the case and give it UV blocking clear coat to prevent
future discoloration.

That's all for now,

Daniel

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TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-02-06 02:32 +0000
  Re: TRS-80 Model 100 Board Replication Black Epyon <Blackepyon01@yahoo.ca> - 2023-02-06 07:07 -0800
    Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-02-07 08:25 +0000
      Re: TRS-80 Model 100 Board Replication Josh Malone <josh.malone@gmail.com> - 2023-02-07 07:16 -0800
        Re: TRS-80 Model 100 Board Replication Walt Perko <r4rguy@gmail.com> - 2023-02-07 09:58 -0800
        Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-02-09 10:41 +0000
        Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2025-11-08 21:44 -0800
  Re: TRS-80 Model 100 Board Replication bill <bill.gunshannon@gmail.com> - 2023-02-06 10:11 -0500
    Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-02-07 08:20 +0000
      Re: TRS-80 Model 100 Board Replication bill <bill.gunshannon@gmail.com> - 2023-02-07 12:31 -0500
        Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-02-13 12:23 +0000
          Re: TRS-80 Model 100 Board Replication David Plass <dplass@gmail.com> - 2023-02-16 10:04 -0800
            Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-02-17 07:28 +0000
  Re: TRS-80 Model 100 Board Replication Walt Perko <r4rguy@gmail.com> - 2023-02-07 04:36 -0800
  Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-02-18 09:04 +0000
    Re: TRS-80 Model 100 Board Replication Black Epyon <Blackepyon01@yahoo.ca> - 2023-02-19 06:43 -0800
      Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-02-20 10:16 +0000
        Re: TRS-80 Model 100 Board Replication Black Epyon <Blackepyon01@yahoo.ca> - 2023-02-21 07:16 -0800
  Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-02-21 10:21 +0000
  Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-02-27 01:53 +0000
  Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-03-03 14:43 +0000
    Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-03-10 17:53 +0000
      Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-08-07 07:16 +0000
    Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2023-03-23 10:12 +0000
      Re: TRS-80 Model 100 Board Replication Bob Campbell <none@none.none> - 2023-04-02 04:14 +0000
        Re: TRS-80 Model 100 Board Replication Walt Perko <r4rguy@gmail.com> - 2023-04-02 04:55 -0700
          Re: TRS-80 Model 100 Board Replication Bob Campbell <none@none.none> - 2023-04-05 03:52 +0000
            Re: TRS-80 Model 100 Board Replication Walt Perko <r4rguy@gmail.com> - 2023-04-04 22:25 -0700
              Re: TRS-80 Model 100 Board Replication bill <bill.gunshannon@gmail.com> - 2023-04-05 08:51 -0400
                Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2025-11-08 19:14 -0800
  Re: TRS-80 Model 100 Board Replication Daniel <me@sc1f1dan.com> - 2025-11-13 21:29 -0800

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