Wednesday, 26 March 2014

LCD Monitor LED Backlight Conversion Update

I think I have finally managed to convert an LCD monitor with a faulty backlight to LED backlighting. As is very common the cold cathode lamps or the inverter had failed so instead of a clear white light I was getting a purple sort of hue and not a very bright one at that.

This is a tricky enough job and the first 2 I tried, an old TV and a monitor,  didn't survive the surgery, but this one seems to have. I need to finish the wiring, but early tests show a good image.

UPDATE - 1st April 2014

The inverter had failed and there was a tell-tale burn mark round one of the transformers on the PCB. I got the LEDs wired to a 14v feed from the power board in the monitor. A good hack I think, but a brightness control will need to be sorted out using a cheap PWM power control module.

Monday, 10 March 2014

Tablet Car Test

Just testing the look of this rig. The actual screen will be a 7-inch DIY touchscreen linked to an X86-based car computer, actually a recycled netbook motherboard.