The Laser 200 might be simple, but it totally stumped me! (Dick Smith VZ200)

The Laser 200 is a low cost 8-bit computer I know nothing about. Let's learn about this computer and see if I can fix this broken one.

Part 1: This part!
Part 2:    • I finally fixed the Laser 200 (plus gave i...  

0:00 Intro and tour of the Laser 200
2:44 What is the Laser 200?
13:06 Teardown
18:14 Powerup and test
20:23 Troubleshooting
56:15 Dead test ROM
1:07:02 Outro

-- Links

Arctic Retro:
   / @arcticretro  

VZ200 Technical Manual:
http://www.vz200.org/bushy/VZ200_tech...

VZ200 Restoration and Dead test:
https://github.com/rweather/vz200-res...

SMMC 0022 where I got the Laser 200:
   • 0022 Some neat stuff from north of the arc...  

Adrian's Digital Basement ][ (Second Channel)
   / @adriansdigitalbasement2  

Support the channel on Patreon:
  / adriansdigitalbasement  

My GitHub repository:
https://github.com/misterblack1?tab=r...

-- Tools

Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.16...

O-Ring Pick Set: (I use these to lift chips off boards)
https://amzn.to/3a9x54J

Elenco Electronics LP-560 Logic Probe:
https://amzn.to/2VrT5lW

Hakko FR301 Desoldering Iron:
https://amzn.to/2ye6xC0

Rigol DS1054Z Four Channel Oscilloscope:
https://www.rigolna.com/products/digi...

Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
https://amzn.to/3adRbuy

TL866II Plus Chip Tester and EPROM Programmer: (The MiniPro)
https://amzn.to/2wG4tlP
https://www.aliexpress.com/item/33000...

TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MI...

EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/

DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DS...

Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-...

Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.ebay.com/itm/14-16-18-20-...

RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
http://www.retrotink.com/

Plato (Clone) Side Cutters: (Order Five)
https://www.ebay.com/itm/1-2-5-10PCS-...

Heat Sinks:
https://www.aliexpress.com/item/32537...

Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI

--- Instructional videos

My video on chip removal without damage:
   • How to remove chips without damaging the c...  

--- Music

Intro music and other tracks by:
Nathan Divino
@itsnathandivino