Samsung TV TXE2545 Bottom Half of Picture
 

Hi,

I have a Samsung TV TXE2545 mfg 4/97 in my shop with
half a picture (bottom half) which is linear (normal). At the center (top of
half of picture) is a bright horizontal line. Above, the screen is black.
I scoped the input signal (pin 1) to IC301 TDA8350Q and it looks normal.
Pins 4 and 8 have a little above normal voltage. Could the cause
of this problem be IC301?

Thanks in advance, Brad

Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.

Change the 8350Q and the 3 filters that are close by.
Samsung has a Kit out for that set....
kip
"Brad" wrote in message
...
Hi,

I have a Samsung TV TXE2545 mfg 4/97 in my shop with
half a picture (bottom half) which is linear (normal). At the center (top
of
half of picture) is a bright horizontal line. Above, the screen is black.
I scoped the input signal (pin 1) to IC301 TDA8350Q and it looks normal.
Pins 4 and 8 have a little above normal voltage. Could the cause
of this problem be IC301?

Thanks in advance, Brad

Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.

Normally don't even have bad caps, just the IC. Be sure to resolder any
bad connections around the area, mostly on the resistors that mount
vertically.
kip wrote:
Change the 8350Q and the 3 filters that are close by.
Samsung has a Kit out for that set....
kip
"Brad" wrote in message
...
Hi,

I have a Samsung TV TXE2545 mfg 4/97 in my shop with
half a picture (bottom half) which is linear (normal). At the
center (top
of
half of picture) is a bright horizontal line. Above, the screen is
black.
I scoped the input signal (pin 1) to IC301 TDA8350Q and it looks
normal.
Pins 4 and 8 have a little above normal voltage. Could the cause
of this problem be IC301?

Thanks in advance, Brad

Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.

I Had one last week with a bad Bi Polar ..the Orange one in front of the IC.


kip
"RonKZ650" wrote in message
oups.com...
Normally don't even have bad caps, just the IC. Be sure to resolder any
bad connections around the area, mostly on the resistors that mount
vertically.
kip wrote:
Change the 8350Q and the 3 filters that are close by.
Samsung has a Kit out for that set....
kip
"Brad" wrote in message
...
Hi,

I have a Samsung TV TXE2545 mfg 4/97 in my shop with
half a picture (bottom half) which is linear (normal). At the
center (top
of
half of picture) is a bright horizontal line. Above, the screen is
black.
I scoped the input signal (pin 1) to IC301 TDA8350Q and it looks
normal.
Pins 4 and 8 have a little above normal voltage. Could the cause
of this problem be IC301?

Thanks in advance, Brad

Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.

On Tue, 12 Apr 2005 14:37:12 GMT, (Brad) wrote:

Hi,

I have a Samsung TV TXE2545 mfg 4/97 in my shop with
half a picture (bottom half) which is linear (normal). At the center (top of
half of picture) is a bright horizontal line. Above, the screen is black.
I scoped the input signal (pin 1) to IC301 TDA8350Q and it looks normal.
Pins 4 and 8 have a little above normal voltage. Could the cause
of this problem be IC301?

Thanks in advance, Brad

Vertical IC, but there is an upgrade for those sets also. They
(Samsung) recommend adding some components to the vertical section
(zeners and ceramic capacitors, I think) to stabilize the circuit.
Someone may have that information available.

They run as hot as a firebrand, or at least did when I worked on
them.

Tom


Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.

Tom ! They still Run Hot Hot..

kip
"Tom MacIntyre" wrote in message
...
On Tue, 12 Apr 2005 14:37:12 GMT, (Brad) wrote:

Hi,

I have a Samsung TV TXE2545 mfg 4/97 in my shop with
half a picture (bottom half) which is linear (normal). At the center (top
of
half of picture) is a bright horizontal line. Above, the screen is black.
I scoped the input signal (pin 1) to IC301 TDA8350Q and it looks normal.
Pins 4 and 8 have a little above normal voltage. Could the cause
of this problem be IC301?

Thanks in advance, Brad

Vertical IC, but there is an upgrade for those sets also. They
(Samsung) recommend adding some components to the vertical section
(zeners and ceramic capacitors, I think) to stabilize the circuit.
Someone may have that information available.

They run as hot as a firebrand, or at least did when I worked on
them.

Tom


Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.

On Tue, 12 Apr 2005 17:20:17 -0400, "kip" wrote:

Tom ! They still Run Hot Hot..

kip

55-60 degrees C on the heatsink, if memory serves. Maybe a Peletier
cooler is in order for them. :-)

Tom

"Tom MacIntyre" wrote in message
.. .
On Tue, 12 Apr 2005 14:37:12 GMT, (Brad) wrote:

Hi,

I have a Samsung TV TXE2545 mfg 4/97 in my shop with
half a picture (bottom half) which is linear (normal). At the center (top
of
half of picture) is a bright horizontal line. Above, the screen is black.
I scoped the input signal (pin 1) to IC301 TDA8350Q and it looks normal.
Pins 4 and 8 have a little above normal voltage. Could the cause
of this problem be IC301?

Thanks in advance, Brad

Vertical IC, but there is an upgrade for those sets also. They
(Samsung) recommend adding some components to the vertical section
(zeners and ceramic capacitors, I think) to stabilize the circuit.
Someone may have that information available.

They run as hot as a firebrand, or at least did when I worked on
them.

Tom


Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.

On Tue, 12 Apr 2005 20:25:14 GMT, Tom MacIntyre
wrote:

On Tue, 12 Apr 2005 14:37:12 GMT, (Brad) wrote:

Hi,

I have a Samsung TV TXE2545 mfg 4/97 in my shop with
half a picture (bottom half) which is linear (normal). At the center (top of
half of picture) is a bright horizontal line. Above, the screen is black.
I scoped the input signal (pin 1) to IC301 TDA8350Q and it looks normal.
Pins 4 and 8 have a little above normal voltage. Could the cause
of this problem be IC301?

Thanks in advance, Brad

Vertical IC, but there is an upgrade for those sets also. They
(Samsung) recommend adding some components to the vertical section
(zeners and ceramic capacitors, I think) to stabilize the circuit.

Hmmm, that bugger runs real HOT. Change all 3 caps for that vertical
circuit and the IC. This one uses dual voltage design, one positive,
one negative.

Yes there is Samsung's bulletin on that design.

Cheers,

Wizard