Sinclair ZX-81 Refurbish and Video Upgrade

Description

Sinclair ZX-81 Refurbish and Video Upgrade.

On a working system, we will:

• Change the electrolytic capacitors
• Change the voltage regulator and install the new one with thermal compound for better heat dissipation.
• Remove the insides of the RF modulator and replace them with our composite video PCB that will allow you to use the same output phono socket on the side of your ZX81 and connect it to the AV input on your TV or Monitor.  This will give  a much clearer and sharper picture and you won’t need to tune your TV in!  The little board also lets us select (depending on the ULA chip type your ZX81 has installed) to generate a backporch in the video signal.  This is required for newer TV’s to get a clean, stable picture.
• If you send your ZX power supply too, we will change the capacitors inside that included in this service.
• Supply you with a brand new composite video cable to connect your ZX81 with your TV/Monitor.

Please be aware that your ZX81 has to be working.  This is not a repair service, unless you tell us beforehand.  Any repair is extra to this service.  Please also be aware that the keyboard membrane tails that plug into the motherboard of the ZX81 may be brittle and are prone to cracking and breaking due to age.  We will be very carefull when trying to remove them, but we cannot guarantee that we will be able to and this may require a new membrane to be fitted.  We can fit a new membrane for you for an additional fee.

You can contact us beforehand to discuss this service.