sony tv wont turn on

[Ben]

i have a sony kv27tw70 it runs great but the power relay does not engage on
the tv
the contacts i can manually close and it will stay closed. it is ry601 on
the board but i have no actual part number any source of replacement part.
any ideas if im proceeding in the wrong direction about why the tv is not
switching on.
any help is welcome
Ben



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[James Sweet]

"Ben" <pendulum@velocity.net> wrote in message
news:1073096705.606783@web.velocity.net...

i have a sony kv27tw70 it runs great but the power relay does not engage
on
the tv
the contacts i can manually close and it will stay closed. it is ry601 on
the board but i have no actual part number any source of replacement part.
any ideas if im proceeding in the wrong direction about why the tv is not
switching on.
any help is welcome
Ben

You should check the transistor that drives the relay, perhaps it's not
switching on fully, could also be the relay itself or some other part in the
area.

 

[jolphil]

"James Sweet" <jamessweet@hotmail.com> wrote in message news:<r5rJb.728470$Tr4.1889747@attbi_s03>...

"Ben" <pendulum@velocity.net> wrote in message
news:1073096705.606783@web.velocity.net...
i have a sony kv27tw70 it runs great but the power relay does not engage
on
the tv
the contacts i can manually close and it will stay closed. it is ry601 on
the board but i have no actual part number any source of replacement part.
any ideas if im proceeding in the wrong direction about why the tv is not
switching on.
any help is welcome
Ben


You should check the transistor that drives the relay, perhaps it's not
switching on fully, could also be the relay itself or some other part in the
area.

Just another thought,
Years ago when I serviced, I remember they had an XRay shutdown
circuit..If the High voltage somehow gets too high so that the set
will emit Xrays, a detector will keep the receiver from starting..
If this is true in your case,you should check it out..
Goodluck,
JP