Master System Mk1 Switchless

quick reference below

Master System 1 VA 3


When fitting the LED, carfully desolder the old LED, watch not to damage the mount holes. Now you are able mount the new LED ground led (middle pin) and one of the other legs in to the original holes. This way it will allow the perfect mount position. Use the original pastic spacer to keep the height correct. The last leg of the LED will need to be bent out


Then remove the resistor at R50. You can connect one led wire to the leg that sticks out remembering to heatshrink then fold it down and the other LED wire the R50 resistor was.


Any questions or suggestions please let me know, just send me an email

I am also interested in ways that other people install these chips, i am happy to receive your install photos.

LED info

below is the LED leg details

Longest leg is Ground
Middle leg is Red
Shortest leg is Blue