5char

[Thompson11k]

5char

[kjr18]

Try probing that ribbon cable and some of the leds for continuity and write down results. Probably they are powered in serial/parallel configuration, probably in groups of 5 or something like that. This way you should be able to make something out of it.

[CJay]

Six contacts on the edge connector, that'll be five groups of LEDs so divide the number of LEDs by five and then multiply the result by 3 which will give you a rough figure for the voltage you need to drive them.

I reckon roughly 25-30V, I've salvaged a few of those strips.

Limit the current to 10mA at first.

[mariush]

Those leds typically have a forward voltage of 6v , since there's two diodes in each package.  Then you have several of them in series, usually 5 to 8 or something like that... basically you need 30 to 45v like the people above me say to get them working.

The current is probably 100 mA for each led or something that would make them use around 1w at most (1w/6v = ~ 166mA) but to be on the safe side, limit the current to 10-20mA .

If you don't have a power supply that can limit current, you can build something quickly with any lm317 linear regulator or some other fixed voltage linear regulator, just look in the datasheets at example circuits.

[CJay]

Those leds typically have a forward voltage of 6v , since there's two diodes in each package.

Well spotted, I hadn't noticed that and haven't seen them like that before either

[mariush]

To be more precise they look like they're the 6v 7030 variety.
You can find them by searching for led backlight 6v 7030  (or some mix of these keywords) ... basically like i said  6v ~140mA (1w)

Here's some examples :

1. https://www.alibaba.com/product-detail/LG-Innotek-LED-LED-Backlight-1W_60673030140.html
2. https://www.aliexpress.com/store/product/SEOUL-LED-Backlight-1W-7030-6V-Cool-white-90-100LM-TV-Application-STWRX2S1E/936602_32222537428.html