kogan kaled46blswc Picture fades to the left side

[andy smethurst]

Hellow:
This LED LCD works fine, but the screen fades a lot from the middle
towards the left side. This is a gradual fade becoming darker towards
the left. This fade is from top to bottom.

The Right hand top corner of the case gets very hot,but not the left
side.

I found four outputs from the power board for the LED's.
There are 2 for each side of the screen.

I tested the voltage of the 2 that go towards the R side (good side)
of the screen, and found: 21.5v and 21.2v this looks good to me.
On the 2 that supply the left side, I found: 11v and 31.7v.



Both totals are 42.7v, but the Left side isn't divided eaqualy.
It seams to me that there is a OC in one line or a short in the
other. It could be a short, as this would explain the hot R hand
side.
I tested these outputs with the plugs to the LED's connected.
I have not worked on led backlights before, only used to ccfl's.

I would like to know if it's ok to pull the plugs to test power board
outputs without damage, and would there be a service manual for
these cheap tv's, as i've tried the usual sites, without luck.

Also, being new to led backlights, are they hard to get at, and
can they be repaired individualy,or do you have to replace the
lot.??

Thankyou for any advice
Regards: Andy.

[tw2005]

Re: kogan kaled46blswc Picture fades to the left side

I'm going to skip on all the good bits because I'm not a LCD dude, but what panel has it got? I've got a kaled463D1 with samsung panel, which has panel failure

[andy smethurst]

Re: kogan kaled46blswc Picture fades to the left side

Hi, this thing has a ROHS panel not a samsung.
These must be a clone of some other brand, and renamed Kogan for Australia, and perhaps
a few other areas. All the components,and the way they are put togeather looks
cheap and nasty, with no familiar named components.

[tw2005]

Re: kogan kaled46blswc Picture fades to the left side

ROHS ? I thought that was a standard?

[tw2005]

Re: kogan kaled46blswc Picture fades to the left side

Pop some picture up. you're not going to find any info or manuals on these but I'm a little curious to see if any similarities with mine

[andy smethurst]

Re: kogan kaled46blswc Picture fades to the left side

Hi, this thing has a ROHS panel not a samsung.
These must be a clone of some other brand, and renamed Kogan for Australia, and perhaps
a few other areas. All the components,and the way they are put togeather looks
cheap and nasty, with no familiar named components.

[tom66]

Re: kogan kaled46blswc Picture fades to the left side

RoHS = EU standard for restriction of Lead and other components... not a panel standard... like CE or FCC mark... or A-Tick in Oz