2K Trimmer Potentiometers (for Issue 2 motherboards) x 2

£0.60

2k Trimmer Potentiometers perfect to re-calibrate your video signal with precision.

These high-quality components are designed exclusively for the Sinclair ZX Spectrum 16k and 48k Issue 2 motherboards, where they serve as direct replacements for the often-failing VR1 and VR2 colour adjustment pots.

If your Spectrum is suffering from “off” colours or a tint that won’t stabilise, these modern, enclosed 2k Trimmer Potentiometers provide a much more reliable and smoother adjustment than the original 1980s open-frame versions.

Sold as a matched pair to ensure both the luminance and chrominance circuits are fully refreshed.

Out of stock

Description

Restore Perfect Colour to Your Issue 2 Sinclair ZX Spectrum

The Issue 2 motherboard is famous among enthusiasts for its discrete colour adjustment circuit. Unlike later boards that automated this process, the Issue 2 requires manual tuning via two 2k trimmers. This set allows you to replace those ageing, scratchy components with modern, high-precision equivalents.

Chosen for Issue 2 Exclusively:

These 2k potentiometers are the correct value and footprint for:

Sinclair ZX Spectrum 16k (Issue 2)
Sinclair ZX Spectrum 48k (Issue 2)

Why Replace Your Trimmers?

Smooth Calibration: Original trimmers often develop “dead spots” due to decades of oxidation, making it impossible to dial in a perfect picture. These new units offer a smooth, linear sweep.
Stable Video: Modern components are less susceptible to thermal drift, meaning once you set your colours, they stay set.
Direct Fit: Designed with the correct pin spacing for a tidy, “drop-in” installation on your vintage PCB.

Technical Note:

These are used for adjusting the U and V colour signals. After installation, we recommend using a “Test Card” program or a diagnostic ROM to help you visually align the colours for the crispest possible output on your TV or monitor.

Additional information

Weight	0.001 g