Toshiba TheaterView Projection TV with display problem

[dnm]

Our 50" set is vertically compressing the display. When it's first turned
on its compressed at the top and bottom, almost like a letter box except the
top and bottom lines are squished together. As it warms up, the top returns
to normal but the bottom stays compressed so that the bottom 1/6 of the
screen is black. Also, their is noticeable barrel distortion. Nothing
changes when switching between RF and video inputs.

Any idea what could be causing this? (besides the fact that I just finished
a custom cabinet to put it in?)

Thanks.

 

[Art]

Fault in deflection, have it diagnosed and repaired.

 

[[email protected]]

You have a VERY PHYSICALLY SECURE faulty connection, or something
really wierd. By really secure I mean it is probably inside a coupling
cap, If that set uses one for the yoke V windings the first thing I
would do is at least jump it out with like a 470 or better. Make sure
you got a 200V unit in your hand if you like your hand.

If most of the distortion is at the top you might have a bad boost cap,
if not replaced will overheat the verttical output and cause it's
failure.

One other possibility is the ramp cap itself.

If you're a tech you will understand: check all the caps in the C3XX
series, especially the ones near the jungle IC. This is of course after
the soldering is over with. You might also have low B++, but to tell I
would need a very well articulated description conforming to a set of
questions.

If not a tech, perhaps you see why we charge money ?

If you're not a tech stay outta there.

JURB