It's from 2006 so I'm not surprised that things happen. You may wonder why we keep it instead of buying a new one but the thing is that we have 2 installed together with a well functioning radar so buying new stuff will be a hefty price tag.
After some Googling I found out that the backlight is produced by a CCFL, a type of neon light, and can give up after some years.
The Googling also gave some tips how to change to a LED backlight. The picture above is showing a test with a short LED light strip to verify the solution, with dimming working, and checking the health of the MFD.
Hardware info
LED strip
- Link to Amazon
- Use cold LED light for better contrast
- 3M adhesive !!
- With the mentioned led strip I used 2 meter so 2000 lm and 20 W
MOS-fet, N-channel
- IRF 630 which I had "in stock"
- Any other N-channel FET could be used handling 2 Amps(My use case)
Additional info
A NPN darlington could also be used but a FET will lower the power dissipation.
The FET is super glued to the board
Missed the schematics so did a quick one.
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