Re: led backlight voltage issue on Toshiba 32W3453DB



Thanks Diah, I've already replaced both LED rails, and the power board

an interesting thing happened today, I removed both boards from the chassis and wired them up and for about 3 seconds the led bl came on, but this happen intermittently therefore Im lead to believe its a bad solder joint somewhere as I did manage to get it to stay on permanent but when the board is moved this disturbs the bad joint...

Re: led backlight voltage issue on Toshiba 32W3453DB

Thanks guys, yes it was typical sound working, torch show lcd image present no backlight, as for shorting the voltage is same with or without leds connected so that rules that one out.
I am getting 3.3v at the bl-on/off

Re: led backlight voltage issue on Toshiba 32W3453DB

Thanks for the schematics,

I tested with and without leds connected and got same voltage, no spike at all

Ive attached some images, and will start to check voltages to mainboard

Is there anything else worth looking at?

Thanks again

Kev...

Hey guys,

Im trying to fix a backlight issue on my sisters Toshiba 32W3453DB

after watching several youtube videos, I jumped in at the deep end and started replacing led's I thought were bad, but with no success.

after testing the 17IPS11 power board, I was only getting 25v out on the led supply so replaced this but Im still getting the same issue.

I dont have the voltage info from the power board to the main board so I'm struggling to diagnose the 17MB95 23186905 but I fear this could be the issue?

does anyone have the...

Re: 17IPS20 No Led Voltage Solved With Video

Hey guys, sorry to hijack a thread, but this kinda relates to my issue......

Im trying to fix a backlight issue on my sisters samsung 32W3453DB

after watching several youtube videos, I jumped in at the deep end and started replacing led's I thought were bad, but with no success.

after testing the 17IPS11 power board, I was only getting 25v out on the led supply so replaced this but Im still getting the same issue.

I dont have the voltage info from the power board to the main...

Re: New Members - please post your introductions here

Hey everyone, big thanks to Reeceyburger123 for recommending badcaps,

have often played around with electronics since i blew up my 1st cap at the age of 12

hoping to gain a little support keeping many items out of landfill !!

thanks in advance for any support recieved

Kev

North Wales, UK