Samsung PS43E450 43" plasma 2" wide vertical blk line

[elviramjw]

Acquired this Samsung PS43E450 43" plasma ps43e450a1wxxu

has vertical black bar about 2" wide on the left half of screen from top to bottom.

Any suggestion where to start looking for faults.

y buffer LJ41-10138a LJ92-01853a
y main LJ41-10136a LJ925-01854a
xmain LJ92-01852a
logic e buffer left LJ10134a LJ92-01850a
logic e buffer right LJ10135a LJ92-01851a
tcon LJ41-10134a LJ92-01849a
av bn96-055541c
psu bn44-00508b
panel 43hd(eh) s43ax-yb01

thnx in advance

E

[Hamie]

Re: Samsung PS43E450 43" plasma 2" wide vertical blk line

Bad panel I'm afraid

[Hamie]

Re: Samsung PS43E450 43" plasma 2" wide vertical blk line

You could try reseating the lower f buffers ribbons.

[elviramjw]

Re: Samsung PS43E450 43" plasma 2" wide vertical blk line

thnx for advice - reseating did not work

[tom66]

Re: Samsung PS43E450 43" plasma 2" wide vertical blk line

Is the big surface mount resistor near that connector open?
It'll be around 1-5 ohms.
Picture will help.

[Alastair E]

Re: Samsung PS43E450 43" plasma 2" wide vertical blk line

Common issue I'm sorry to say--Especially on 'D' series and 'E' series Sams.....

I had a run of about 6 of these model sets--with this exact fault! BAD week that was!

The failure is a chip which is on a Mylar film thats attached to the glass of the plasma panel, and due to the way these things are made, is Unreplaceable--Its Made as part of the plasma panel. They are known as Chip On Film, or COF chips.

There are around 10 or 15 (depending on size and resolution) of these chips along the bottom edge of the panel, a failure in any one will give a vertical problem in line with the faulty chip. The give-away statement in your case is '2" vertical black bar from top to bottom'

Unlike some makes, Sams. dont have fusible-resistors associated with these chips as far as I'm aware.
--Seeing its stuffed, you might as well strip off the heatsink (ally strip along bottom edge and examine these chips--just for the education, you may also find a burned spot on one that's in line with your black bar....