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Re: Old-timey design from not too long ago

From Tim Wescott <tim@seemywebsite.com>
Subject Re: Old-timey design from not too long ago
Newsgroups sci.electronics.design
References <ROYoA.80803$J93.8821@fx39.iad>
Message-ID <ftSdnSPHToMuGTnFnZ2dnUU7-bednZ2d@giganews.com> (permalink)
Date 2017-02-15 10:41 -0600

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On Wed, 15 Feb 2017 08:35:44 -0500, bitrex wrote:

> The Yamaha TX81Z, circa 1986:
> 
> http://i254.photobucket.com/albums/hh102/gjm_photo/TX81Z1.jpg
> 
> Big transformer, linear regulators, two-sided board, bunch of DIPs.
> 
> Looks like the power switch is on the left at the back, and they've
> routed some long piece of metal around the regulator heatsinks all the
> way to the front panel. Anyone know why they'd do that?
> 
> The ICs seem scattered all over with not a lot of rhyme or reason to
> their positioning - make room for all the jumpers?

One sided board.

The long bar looks plastic.

-- 
Tim Wescott
Control systems, embedded software and circuit design
I'm looking for work!  See my website if you're interested
http://www.wescottdesign.com

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Thread

Old-timey design from not too long ago bitrex <bitrex@de.lete.earthlink.net> - 2017-02-15 08:35 -0500
  Re: Old-timey design from not too long ago bitrex <bitrex@de.lete.earthlink.net> - 2017-02-15 08:43 -0500
  Re: Old-timey design from not too long ago Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> - 2017-02-15 08:53 -0500
    Re: Old-timey design from not too long ago bitrex <bitrex@de.lete.earthlink.net> - 2017-02-15 09:30 -0500
    Re: Old-timey design from not too long ago bitrex <bitrex@de.lete.earthlink.net> - 2017-02-15 09:42 -0500
      Re: Old-timey design from not too long ago bitrex <bitrex@de.lete.earthlink.net> - 2017-02-15 09:44 -0500
        Re: Old-timey design from not too long ago Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> - 2017-02-15 19:02 -0500
    Re: Old-timey design from not too long ago Don Kuenz <g@crcomp.net> - 2017-02-15 15:23 +0000
      Re: Old-timey design from not too long ago bitrex <bitrex@de.lete.earthlink.net> - 2017-02-15 12:07 -0500
        Re: Old-timey design from not too long ago Don Kuenz <g@crcomp.net> - 2017-02-16 20:03 +0000
  Re: Old-timey design from not too long ago Tim Wescott <tim@seemywebsite.com> - 2017-02-15 10:41 -0600
    Re: Old-timey design from not too long ago bitrex <bitrex@de.lete.earthlink.net> - 2017-02-15 12:00 -0500
      Re: Old-timey design from not too long ago Tim Wescott <seemywebsite@myfooter.really> - 2017-02-15 11:44 -0600
      Re: Old-timey design from not too long ago tabbypurr@gmail.com - 2017-02-15 14:36 -0800
        Re: Old-timey design from not too long ago Tim Wescott <seemywebsite@myfooter.really> - 2017-02-15 17:35 -0600
          Re: Old-timey design from not too long ago tabbypurr@gmail.com - 2017-02-15 23:49 -0800
            Re: Old-timey design from not too long ago Tim Wescott <tim@seemywebsite.com> - 2017-02-16 13:58 -0600
              Re: Old-timey design from not too long ago bitrex <bitrex@de.lete.earthlink.net> - 2017-02-16 23:24 -0500

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