[TechAssist] Re: Mitsubishi CS-31303, no vertical deflection.
- From: "Damon" <DamonEB@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 19 Jun 2005 07:01:49 -0500
Awwwwww Yyyyyeahhhhhhh.....is signal injection troubleshooting making a
comeback? I hope so.
And here I'm surprised an AC signal will substitute close enough for for a
ramp.
Kinda wish Radio Shack had an inexpensive Signal Kit with fast-plug-in
capability, who uses the $2700 signal generators enough to warrant the cost?
Damon B
Telrad Electronics
Fort Wayne IN
----- Original Message -----
From: <majorthom@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, June 18, 2005 2:37 PM
Subject: [TechAssist] Re: Mitsubishi CS-31303, no vertical deflection.
> Yeah,I do it sometimes w/ solid state.I still like the 100 W lite bulb
deal,Regards,
> Pete
> tjanphyl@xxxxxxxxxxxxxxx wrote:
> Boy you do go back a few years! I remember using a small 6.3VAC
> filament transformer and a .1ufd lemmon drop cap as a coupler. The
> 6.3vac was good as a vertical drive signal sub and fed it to the vert
> grid.Got a stretched rolling pix instead of a line and that was the
> test.
> Phil
>
> ----- Original Message -----
> From: "majorthom@xxxxxxxxxxxxx"
> Date: Saturday, June 18, 2005 2:07 pm
> Subject: [TechAssist] Re: Mitsubishi CS-31303, no vertical deflection.
>
> > borrow 60 cycle from somewhere and trigger chip-don't forget small
> > coupling cap[not electrolytic]
> > Jim Myers wrote:Yes, replacing the resistor
> > did restore VCC to the chip and no I did not
> > replace the output IC yet since I will have to order it. I am sure
> > that
> > a vertical drive signal is required for the output IC to produce
> > deflection and there is none on any of the 9 pins so I would like
> > to
> > know where this drive signal comes from since I will probably have
> > to
> > order two IC's.
> > Guess I'm so used to reading between the lines now I'm starting to
> > write
> > between the lines too. Sorry about the omitted information.
> >
> >
> > ********************************
> > Since 1972 *
> > Jim Myers *
> > Telrad Electronics *
> > Fort Wayne Indiana *
> > ********************************
> >
> >
> > Phil Bader wrote:
> > > First, did replacing the resistor RESTORE Vcc to the chip? I
> > would
> > > assume so, but you didn't say. The open resistor would confirm a
> > bad
> > > vert output. You also omitted if you changed the IC401, which
> > should be
> > > automatically done in this case before going on to other
> > possibilities..> Let us know.
> > > Phil Bader
> > >
> > > Philip Bader
> > > Jan Phyl TV Inc. (estab. 1976)
> > > 3420 Recker Hwy. Winter Haven, Fl. 33880
> > > Fax (863) 299-8821
> > > email: tjanphyl@xxxxxxxxxxxxxxx
> > >
> > >
> > >
> > > Jim Myers wrote:
> > >
> > >
> > >>Found R570 open and no 28V to vertical IC401, replaced it but
> > still no
> > >>vertical. I don't see any drive signal to IC401 a TA8427K. Any
> > tips for
> > >>this problem?
> > >>
> > >>Thanks,
> > >>
> > >>********************************
> > >>Since 1972 *
> > >>Jim Myers *
> > >>Telrad Electronics *
> > >>Fort Wayne Indiana *
> > >>********************************
> > >>
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> > Peter Neal
> > Neal Electronics
> > 1905 E. Wm.Cannon
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> Neal Electronics
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