Fixing a Sinclair ZX Spectrum 128k +2 Datacorder… and using a Buck Regulator on a Spectrum??

I bought this Sinclair ZX Spectrum 128k +2 as “Spares or Repairs”. The seller told me that the tape deck didn’t work, so it had been used for parts! We’re going to look at the machine and get it running, then tackle the broken Datacorder!

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00:01 – Intro and examination of the Sinclair Spectrum 128k +2 (Grey).
00:18 – Missing parts.
00:40 – Plans for fixing the 128k Speccy
00:50 – Mark Fixes Stuff Intro
00:55 – PCBWay Sponsor Thanks
01:09 – Can I replace a LM7805CV with a buck regulator like a RECOM?
01:40 – Advantages of using a buck regulator instead of a 78XX regulator.
02:00 – Wiring up a generic Chinese 5v buck regulator without soldering.
02:34 – We’re using this Retro Computer Shack RGB SCART cable.
02:40 – Getting the main computer board of the Spectrum +2 working.
03:35 – Testing the Sinclair ZX Spectrum 128k +2 with a modern buck regulator.
04:18 – Examining the broken Spectrum +2 Tape Deck.
04:30 – Mechanical examination – Play / Rewind / Fast Forward.
05:28 – Flywheel not turning correctly due to fouling by the eject latching mechanism.
05:57 – Removing the Metal flywheel on the Spectrum +2.
06:43 – Fixing the small white plastic piece that is touching the metal wheel in a Spectrum +2 Gray.
08:05 – What lubricant can I use on plastic and rubber that is plastic safe?
10:30 – Installing a new Datacorder belts in the Sinclair ZX Spectrum +2 Grey.
11:25 – Checking continuity beween the ground connections on the Datacorder board and the metal chassis of the datasette.
11:53 – Cleaning the heads on a Sinclair ZX Spectrum 128k +2 Datacorder Casette Deck.
12:50 – What type of screws can I use to replace the screws on a ZX Spectrum?
13:25 – Testing the repaired Sinclair ZX Spectrum Datacorder Casette Deck
14:16 – Test load from an original vintage Sinclair Spectrum Cassette.
15:31 – Patreon Supporter thanks!
15:51 – Further retrogaming and computing repair viewing!