CRG | Spectrum 128k Toastrack. Investigation and modification of this British computing icon. @CRG | Uploaded April 2024 | Updated October 2024, 2 hours ago.
This week we are looking at a Spectrum 128k toastrack that belongs to @YawningAngelRetro. He asked if I could sort out a power issue and carry out a few mods so lets see what we can do.

The mods completed in this video are a composite mod with audio and colour bleeding fix. Audio level fix, a jail bar fix and we also fit a new regulator.

All components were purchased from retroleum.co.uk

High quality spectrum schematics can be found at this link 8bit-wiki.de/fileadmin/8bit-wiki/Sinclair/ZX_Spectrum/_zx128/manual/ZX%20Spectrum%20128%2B%20Schematics.pdf

Youtube channels mentioned in this video:
Yawning Angel (Amiga AMOS tutorials) - youtube.com/@UCAL2cRVgVCvbe8hscUCPbwA
Rose Tinted Spectrum (Vintage gaming shenanigans ) - youtube.com/@UCGDTjXnyGM5flG6Xk6fiMAg

CRG Links
CRG X (Twitter) - twitter.com/YT_CRG
CRG Patreon - patreon.com/user?u=13919007
CRG Discord - discord.gg/3hEzUxTxWV

Chapters
00:00 Intro
00:30 Letter
02:38 Opening up
04:47 Composite mod
15:03 Components
16:20 Colour bleeding mod
18:33 Jail bar mod
21:27 Audio level mod
22:29 Replacement regulator
26:43 Revisiting the jail bar mod
32:40 Testing and printer problems
34:34 Tape tester
36:35 Dizzy