Sinclair ZX Spectrum Plus

Configuration

• Built: End of 1984
• Mainboard: Issue 4B
• CPU: Z80B
• ULA: 6C001E-7 (date code 8445, probably made in Philippines)
• RAM: 48KB (upper TMS4532-20NL3)
• Composite mod

Trivia

• Got this from a bundle of two ZX Spectrum+.
• The previous owner added a power LED and began working on a monitor connector. He did it in a very professional and careful way. From the outside, these modifications look like they have always been there.
• Uses a SN94459N as IC14.
• Has a yellow power LED mod.

Known Issues

• Membrane contact is broken and needs replacement.
• Reset button and power LED needs to be resoldered.
• Needs recapping.
• Monitor modification is incomplete. The previous owner stopped modifying this machine at some stage, for unknown reasons.

History

• 2022-05-20: Date of purchase