TV repair (LG 37SL80YD) possible?


#1

A family members LG TV recently stopped working. It was used pretty much every day for the last 8 years, probably for several hours.

I have had a look at it, and it powers on with the control lights below the LCD lighting up. Though there is no display.

After about 30s I have a few lines/pixels vertically of colour (no sound) slowly moving from roughly the centre towards the right of the display, maybe 30cm in width.

Anyone who has tinkered with LCDs/TVs recently (I have not for a few years) have a thought on what it might be, and if it is repairable?

Would be handy to have around if I can get it working again (rather than another piece of e-waste).


#2

Without having a service manual in my possession - if it were I, the first thing I would do is pull the board out and go over it with a magnifying glass or microscope camera checking for dry/dodgy solder joints and reflowing any that looked even remotely questionable.

I’d then reflow any BGA packages to resolve any underfill issues.


#3

any recommendations for either of these? Thanks!


#4

I’m not sure there’s much differentiation between magnifying glass models, to be honest.


#5

You could do worse than one of these things for fine work, especially since you’re probably not wanting to spend too much on tools for this one job. https://www.jaycar.com.au/led-headband-magnifier/p/QM3511