On 11 Nov 2004 23:08:34 GMT, Ol' Duffer wrote:

In article ,
says...
I'm working on a Philips 60P8342 (P916 chassis) that shuts down about
3 to 5 seconds after turn on.

Do you get a blinking power LED?
If so, it will blink the error code.

Most common I have seen is error 2, which is
supposed to be vertical sweep failure, but usually
the problem is not in the vertical sweep, but in
the circuits that detect the presence of sweep.

If I am thinking of the right chassis, I have only
seen one with an actual large signal failure, and
the rest have all been flaky SSB boards. This is
the little board in the SIMM socket near the right
side of the set. In the case of the alleged error 2,
it has been a shorted input pin on the microprocessor,
the pin that receives the vertical pulse. These
little boards, which are the brains of the set, seem
to be chronic failure items. Of course there are
some SMD resistors, capacitors, and a transistor
that "condition" the signal before feeding it to
the SSB, but the signal path seems to always be okay.
And of course, the SSB is hard to get at and diagnose.

IIRC, there is a PC software and interface package
available to diagnose these new chassis. Like anyone
can afford such a thing in this day of disposable
TV's. Maybe the factory has one. Good luck!

That sounds like the chassis I'm working on. I will check on the
error code next time I work on it. Thanks for the tip.
Andy Cuffe