[TechAssist] Re: Proscan CTC 169bg5 shut down
- From: "Tomlee" <t8872695@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 29 Jan 2002 16:54:31 -0800
To JBC, Perry,Phil Bader, Phillip Hull, Guys William.
I am just too happy to tell you friends that I cut the high input to High
voltage block . Then the set turn on. I do not know the block is bad or
further short . onething is I take off crt board to test. One moer thing
that I learn is it shut down before the high voltage is on .It is harder
than the other brand of tv ,Usually the sound of high voltage on then shut
down .anyway this is the second proscan I work .I will post the outcome of
my work on this forum.
Dang TVCR
----- Original Message -----
From: "Tomlee" <t8872695@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, January 28, 2002 10:31 AM
Subject: [TechAssist] Proscan CTC 169bg5 shut down
>
> Hello fellow tech.
> I am working with ctc 169bg5. with the help with other techs Perry, JBC.I
> force to turn on the tv by apply 5v at base of
> Q4306. But the tv show a sign of on and off cycle. I do not hear the
sound
> of high voltage . I use the sencore to ring the
> flyback by one end of probe to the B+ and the other end to colector of HOT
> as sencore manual direction. But Get zero
> ring .If I remove cr402 and L803 I will get maximum 30 rings.(The HOT
> colector connect to ground by 2 diode CR 401 and cr402 ). I means If The
> HOT collector connect to ground or connect to pincustion circuit(through
> L803) It will make zero ring on flyback test.Does this means somthing
wrong
> at pincushion ckt or B+ to ground ckt . I measure no short to B+. .
> May be it is only short to horizontal frequency?.Any Ideas from experince
> tech is appriciated.I spend too much time for this .
> Dang TVCR
>
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