Hi,

I replaced IC501, but that wasn't the problem (all electroy. caps good).
I do not have a schematic and I couldn't find (on web) the pin outs for this
vertical IC # LA78040N.

Which pin is the input pin?

If I repair this TV, I will post an "UPDATE" with details.

Thanks in advance, Brad

-----------------------------------------------------------------------------------
Below is original post:

Sanyo 19" TV model DS19204, ch 19204-01 mfg 11/04

I have this TV in my shop with loss of vertical deflection (TV goes off
shortly after turn on). I have no SM or pin out information (searched web)
about IC501, LA78040N. B+ (24V) is present at pin 2 when TV is turned on.
Pin 4 is ground. I saw an abnormal signal on pins 3, 5, and 6 which causes
a small deflection as a light shading above and below the center horizontal
line (TV is on long enough for this to appear). I tested components around
IC501 and found no defective part. I suspect that the source of the vertical
signal (which is abnormal) that drives IC501might be the problem?

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.

R u sure its not a LA7840

kip
"Brad" wrote in message
...
Hi,

I replaced IC501, but that wasn't the problem (all electroy. caps good).
I do not have a schematic and I couldn't find (on web) the pin outs for
this
vertical IC # LA78040N.

Which pin is the input pin?

If I repair this TV, I will post an "UPDATE" with details.

Thanks in advance, Brad

-----------------------------------------------------------------------------------
Below is original post:

Sanyo 19" TV model DS19204, ch 19204-01 mfg 11/04

I have this TV in my shop with loss of vertical deflection (TV goes off
shortly after turn on). I have no SM or pin out information (searched web)
about IC501, LA78040N. B+ (24V) is present at pin 2 when TV is turned on.
Pin 4 is ground. I saw an abnormal signal on pins 3, 5, and 6 which
causes
a small deflection as a light shading above and below the center
horizontal
line (TV is on long enough for this to appear). I tested components
around
IC501 and found no defective part. I suspect that the source of the
vertical
signal (which is abnormal) that drives IC501might be the problem?

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.