Toshiba HX-10 MSX black screen repair can I fix it ?

#retro #msx #8bit #repair
This video is sponsored by https://www.PCBWay.com -

Warning. Do not use the PCB I use in the video, it is not working correctly for some people so I suggest you do not use it.

I bought another faulty 8 bit micro from Ebay, this time it's an Toshibs HX-10 MSX and will be my first time seeing one in person as we all had speccy and c64 back in the day. It was sold described with no power, but it turns out the fault was no display- the dreaded black screen.

CHAPTERS
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0:00 - Intro
1:06 - Unboxing.
2:57 - Basic power tests.
7:23 - Quick test with the keyboard for the caps lock led.
8:30 - Looking at the system chips.
9:46 - Tools I use to repair.
13:29 - Checking voltages of known IC.
16:08 - Connecting a TV and looking at the output.
16:52 - Using the Oscilloscope to probe IC.
21:37 - Checking one of the 4116 RAM chips.
23:42 - Testing the ROM, comparing and burning a new ROM.
26:06 - Will it work ?
28:34 - PCBWAY sponsor segment.
30:09 - Building an Eprom Cartridge.
30:57 - Diagnostic Cartridge tests (very long !!!!) flashing lights.
32:10 - Screen Modes
34:00 - Sprites
34:38 - Monitor Colours
35:04 - Keyboard
36:09 - Joystick
36:36 - Sounds
37:36 - System Info
38:12 - Testing the Ram
39:35 - Epic cleaning montage
44:09 - What a beauty
44:26 - Playing a Cartridge game
46:28 - Expert analysis of the faulty ROM from Dean - Breakintoprogram.co.uk
57:11 - Final words

MSX repair blog from Tynemouth Software
https://www.owler.com/reports/tynemou...

MSX Diagnostic Cartridge
https://nightfoxandco.com/?page_id=787

MSX Memory Test ROM
https://hwado.tistory.com/117

Search for MSX Eprom Cartridge to use these ROMS.

Music is by Joakim Karud - The Melanphonics