Re: HITACHI 32HXC01U - No backlight - Vestal 17IPS19-5 V.1 061112

DMM says array is o/c....

post somewhere said driver IC monitors array and shuts down if s/c o/c...

That would suggest array voltage can only be checked with working array connected???

Re: HITACHI 32HXC01U - No backlight - Vestal 17IPS19-5 V.1 061112

Folks,

Plugged an array of 12, 2V LEDs into backlight cable. Does anyone have a schematic to check the voltage for me?

LEDs flash on and then voltage decays from about 40-0V (DMM)

Not sure I'm any wiser yet. I'm going to try and power up backlight with a PWM supply and see if they light.

If all else fails I'll just try some strip leds and an external supply. Trawled the web for a supplier - there's a USA company doing CCFLs and LEDs but not for this model....

Re: HITACHI 32HXC01U - No backlight - Vestal 17IPS19-5 V.1 061112

Hi folks,
I have a backlight out on this same set.
A look at the array of leds shows no fancy circuitry, so I'm assuming I can apply 24v across the backlight connector to check for correct illumination.
If it's the Vestel PSU board is there a recommended sequence for component replacement.
The set is like new - just out of warranty!
Any help much appreciated.

Colonel P.