Sinclair ZX Spectrum 48K Motherboard – Replacement PCB (Exact Unit Pictured)

Description

Genuine Sinclair ZX Spectrum 48K Replacement Motherboard

The heart of the 1980s computing revolution, the Sinclair ZX Spectrum 48K motherboard is a masterpiece of compact engineering. For those looking to maintain their original hardware, finding a high-quality replacement PCB is increasingly difficult. This listing provides a genuine, period-accurate motherboard ready for your next project.

Authentic Hardware for Retro Restorations

Whether you are dealing with a terminally damaged original board or building a Spectrum from spare parts, these motherboards offer the authentic logic and timing that only original Sinclair silicon can provide.

Why Choose This Specific Motherboard?

• Transparency: Unlike generic listings, we provide high-resolution images of the exact motherboard currently available. What you see in the photographs is precisely what will be dispatched to your workbench.
• Inspection: Our photos allow you to inspect the PCB for specific revision numbers (e.g., Issue 2, 3, 3B, 4A, 4S, or 6A) and the condition of the ULA, CPU, and RAM chips.
• Flexibility: Perfect for those who already have a spare case, keyboard membrane, and power supply and simply need the “brains” of the machine to complete a build.

Technical Specifications and Condition

Visual Hardware Check

We encourage all buyers to use our zoom feature to examine the motherboard. Look for details such as:

1. Capacitor Condition: Identify if the board has original or upgraded electrolytic capacitors.
2. Socketed Chips: Check if the ULA, Z80 CPU, or ROM are socketed for easy maintenance.
3. Trace Integrity: View the condition of the copper traces and edge connector.

Compatibility and Fitting

This motherboard is a standard 48K layout and is designed to fit into any original “Rubber Key” Sinclair ZX Spectrum 16K/48K case. It is compatible with standard Spectrum peripherals via the rear edge connector.