Philips/Vestel PSU 17IPS19-5S no backlight

[Dragunov]

Hello guys i need some help regarding Vestel PSU 17IPS-5S.

There is no backlight.

I think this is schematic for similar psu...



How many volts there needs to be on the P501?

What should i do?

Thx.

[ReeceyBurger123]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

Hello please watch my video which shows how to test this Psu and Leds:
https://m.youtube.com/watch?v=0uBhca7zyXI

[Dragunov]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

Just watched some of your movies hehehe... its nice to find you here... will start watching now and post back.

[ReeceyBurger123]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

Awesome keep us updated on what you find. If the driver starts then collapses to 24v you have a bad led but if you have no boosted voltage-60v-then the driver is failed.

[Dragunov]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

I have a nice round 0 on the red wire from the start and black drops to 23V... What should i do now?

[ReeceyBurger123]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

What you mean 0 at the start ?

[Dragunov]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

When i boot it from standby and measure red wire i get no voltage but if i test black wire when i boot it from standby i get around 70 and it lowers to 24.

[ReeceyBurger123]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

Ohh you mistyped and put 0 so it confused me lol. If you watched the video that means you have a bad Led.

[Dragunov]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

When you tested RED wire it started High and falled to low but i have no voltage on startup.

Black acts like in the video starts high and falls low.

[Dragunov]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

Yep its one of the leds where can i find one and what kind am i looking for?

[ReeceyBurger123]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

Try ebay search for Tv led backlights.

[Dragunov]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

I think im gona salvage some from some monitor are they the same?

[ReeceyBurger123]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

Depends on the type if backlight, full array you can do it but edge lit you might not be able to as the diodes are different.

[Dragunov]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

Its the second one from the connector.

[ReeceyBurger123]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

What do you mean ?

[Dragunov]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

Sorry ok i got it now its full array.

[ReeceyBurger123]

Re: Philips/Vestel PSU 17IPS19-5S no backlight

No worries keep us updated on what you do.