Another cheap project was to repair
the back light on the NAV-6000 GPS
that I have. I can use the C_Map chips that I also use in the Ray color chart plotter at the nav table. The issue with the NAV-6000 is their EL back light panels die. I found EL panels on Ebay from Hong Kong for around $7 each, bought 2 and started by cutting the panel to size, taping the cut edge, taping to the clear plastic light diffuser and sliding under the LCD display. The edge connectors were soldered to fine wires and I had to make a slide in flex connector out of copper foil and mylar to fit the PCB connector. And then the acid test... Turned on the GPS
and hit the back light button....