Dell WD3000 back lighting issues

[Jeffrey D Angus]

A friend of mine bought a Dell WD3000 and after about 1-1/2
year or so, got tired of dealing with the back lighting not
working properly. (Having to turn the power on and off and
reboot several times.)

So I was gifted with it. Of course, it worked just fine with
me for a while then started acting silly again. Until I got
tired of the routine.

I replaced both of the back light inverter boards and it
seemed happy with that. (Purely coincidental I think) And now
it still has the back light not coming on issues.

Is there a specific breed of chicken I'm supposed to slaughter
and wave over my head to fix this?

Thanks

Jeff

--
“Egotism is the anesthetic that dulls the pain of stupidity.”
Frank Leahy, Head coach, Notre Dame 1941-1954

http://www.stay-connect.com

 

On Thu, 01 Apr 2010 16:08:56 -0500, Jeffrey D Angus
<jangus@suddenlink.net>wrote:

A friend of mine bought a Dell WD3000 and after about 1-1/2
year or so, got tired of dealing with the back lighting not
working properly. (Having to turn the power on and off and
reboot several times.)

So I was gifted with it. Of course, it worked just fine with
me for a while then started acting silly again. Until I got
tired of the routine.

I replaced both of the back light inverter boards and it
seemed happy with that. (Purely coincidental I think) And now
it still has the back light not coming on issues.

Is there a specific breed of chicken I'm supposed to slaughter
and wave over my head to fix this?

Thanks

Jeff

If the CCFL's are bad the inverter will suffer either damage or sense
over current and shut down.

 

[John-Del]

On Apr 1, 5:08 pm, Jeffrey D Angus <jan...@suddenlink.net> wrote:

I replaced both of the back light inverter boards and it
seemed happy with that. (Purely coincidental I think) And now
it still has the back light not coming on issues.

There is usually a backlight on off line from the mother board to the
inverter.. If the boards are marked, you can check for 2 to 5 volts
on this line. If the voltage appears along with the 24v B+, you
either have bad inverter boards or cranky lamps. If this voltage
never appears, you can try adding a high value resistor (start with
1500 ohmsK) from the 5V line to the on off line and force the inverter
on.

Dell is the only brand of LCD TV i will NOT take in for service.