TRS 80 Model 1: Fixing The Expansion Unit

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#Tandy #TRS80 #RadioShack

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Time Stamps
0:00 Intro
1:12 PCBWay Ad
1:57 Disassembling The Expansion Unit
5:31 The Chips I Am Looking At And How I May Test Them
7:17 Testing Voltages
9:33 Pulling And Testing Some Chips
13:45 What Just Happened?
15:09 Getting Some Sound Output
16:28 The End Part
  1. Canadian Retro Things
  2. Retro Repair
  3. Retro
  4. Canadian Retro Things
  5. TRS80
  6. TRS80 Model 1
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Комментарии
Автор

Great job getting that expansion interface working!

ohioterran
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Great job getting that going! Side note: I got that computer on December 19, 1978, exactly 46 years ago yesterday! Time flies...

shanemcd
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That daughterboard is a "Doubler" that provides the ability to handle double-density floppy disks; it holds the original floppy controller plus another one that handles double density. You need a DOS or drivers for it. Good score getting an expansion interface with one of those in it!

gregdunlap
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Good to see you making progress! Happy Holidays!

AJGriglak
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Connections were a big problem with the TRS-80. Whenever I had a problem, the solution usually meant cleaning the contacts

CyranoJones
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Good job, but maybe pulling out the scope before pulling out chips is better. Happy Holidays. I enjoy your channel

atarimex
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Your lost screws must be working their way down to me, because I always have one or two left over!

JimRye-kz
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Let's talk rust-proofing - these Colecos will rust up on you like that!

RussellFlowers
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I found a repair manual for that board. edit: I dug it out and it's not the same. I the repair manual I have is for the Tandy 1000 256K memory expansion board

LaserFur
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