Re: Haier Curved 4K 55ufc2500 No backlight

Ah, I see - and they're real econo, as in I can land one for $20. The Chinese make junk, but at least they make cheap junk!

So I'm looking at a supply of a couple of hundred volts or something. How fast does it drop after power-up? Fast enough that I should be using an analog meter rather than the DVM? Or do I have a few seconds until it detects the no-load condition and shuts off?

Re: Haier Curved 4K 55ufc2500 No backlight

Okay, so the LED replacement is a reasonable/obvious approach.

Do I understand correctly that the LED supply is via those two little connectors, each with the red/black pair, that's on the upper right hand corner of the switcher, nearest buddy's DVM in the photos?

If so, what can I see on those pins that will confirm good supply and bad lights? If not, where do I look? And what on earth is a "LED tester", in this context?

And can you recommend a source for replacement LEDs? I [I]really[/I]...

Re: Haier Curved 4K 55ufc2500 No backlight

Hi, folks. Brand new here - very experienced EE but total n00b when it comes to messing with newfangled TVs.

I was recently given one of these, and the screen's black. It appears to power on, but that's about as far as I can go - it's a chicken-and-egg problem. Without the onscreen menus I can't select an input and try to determine to what extent it's working. If I could do *that* much I could at least get proof of life from the audio.

If the general assumption is that it's a bad LED thing, where do I start looking?...