Sinclair ZX81 Composite Video / Back Porch Generator Mod

£15.00

Sinclair ZX81 Composite Video / Back Porch Generator Mod – Pre Built.

SKU: ZX81-COMPMOD-PREBUILT Categories: , Tags: , , ,

This Rudedog designed PCB inspired by a schematic at zigg.net will allow you to replace the insides of a ZX-81 RF modulator with a new PCB that will give your ZX-81 a much better, stable picture on modern televisions.

This item is for the pre-built and tested version of the PCB.  You will need some soldering skills to remove the old RF modulator from the ZX-81 PCB, remove the insides of the RF modulator and replace them with this PCB. You will then have to resolder the RF modulator back into your ZX-81.

Moderate soldering skills are required, but full instructions are provided.

Please note: This backporch mod is not required for ZX81’s with a newer ULA or ULA replacement like the VLA81 that already produces a backporch signal.  Instead, contact us for our standard composite video mod PCB.

If you prefer to have it done by us, and have your ZX-81 refurbished at the same time, see this item in our shop instead: Sinclair ZX-81 Refurbish and Video Upgrade

Additional information

Weight 0.25 kg
Dimensions 17.5 × 13 × 2 cm

1 review for Sinclair ZX81 Composite Video / Back Porch Generator Mod

  1. John J

    Job done a beautifully clear picture. Magic

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