[TechAssist] Re: Sharp 27US60 immediate shutdown
- From: peggs <peggs@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx, techassist@xxxxxxxxxxxxx
- Date: Fri, 23 Jul 2004 12:22:15 -0700
Bob Waterman is human ???......please say it isn't so......
Peggs
At 09:48 AM 7/23/04, Paul wrote:
>Hey Bob, Don't be embarrassed. None of us are perfect that is the reason=
=20
>for the list. Glad you found it. There may be more like that out there.
> Paul
>.
>Gemini Computer & TV <geminitv@xxxxxxxxxxx> wrote:
>Robert,
>I had already posted this to the group:
>
>Never mind I found the problem. Here is the story below. I can't believe I
>had not checked vertical before creating this post. I am so embarrassed!
>There was no 24 volts to pins 3 and 6 of vertical IC (IC501 - LA7841).
>Traced source back to D502 which checked okay. When checking the continuity
>path between pin 7 of the flyback to the anode of D502, there was none.
>Problem ended up being that there is a solder rivet surrounding pin 7 which
>really needs a good "blob" of solder to ensure good continuity. This
>corrected the set.
>
>
>
>Bob Waterman, CET=AE #RI-28
>Master Technician License #9109
>Service Manager / Parts Manager
>Gemini Computer, TV, & Security Alarms
>(508)695-7302
>(508)695-7769 FAX
>geminitv@xxxxxxxxxxx
>geminitv@xxxxxxx
>www.geminicomputertvsecurityalarms.com
>
>
>
>----- Original Message -----
>From: "tvservice"
>To:
>Sent: Friday, July 23, 2004 9:31 AM
>Subject: [TechAssist] Re: Sharp 27US60 immediate shutdown
>
>
> > Bob,
> > have you checked D653, D651 and resistors in XRay protect? You might try
> > temporarily removing D653 to see if still shutsdown.
> > Robert
> > tvservice@xxxxxxxxxxxxx
> > H & H Electronics Inc
> >
> > ----- Original Message -----
> > From: "Gemini Computer & TV"
> > To: "Techassist"
> > Sent: Friday, July 23, 2004 5:34 AM
> > Subject: [TechAssist] Sharp 27US60 immediate shutdown
> >
> >
> > > I have a Sharp 27US60 that is going into immediate shutdown (within 10
> > > seconds or so, the high voltage does come up with the set) after power
>on.
> > > The TV can not be switched on or off again until the set has been
> > unplugged
> > > and reset. The B+ is 126 volts and steady, the 7 and 17 volt standby
> > sources
> > > are normal, 200 volts is good, and so is 9 volt regulator IC751. I had=
a
> > new
> > > flyback on the shelf so I swapped it with no change. I can find very=
few
> > > tips on this model and I have checked D707, D712, and IC702 as per the
> > > 32US60 in WINSTIPS. Need some assistance on this one. I am getting
>bogged
> > > down with dogs as it is getting busy with lightning season if effect.
> > >
> > > Bob Waterman, CET=AE #RI-28
> > > Master Technician License #9109
> > > Service Manager / Parts Manager
> > > Gemini Computer, TV, & Security Alarms
> > > (508)695-7302
> > > (508)695-7769 FAX
> > > geminitv@xxxxxxxxxxx
> > > geminitv@xxxxxxx
> > > www.geminicomputertvsecurityalarms.com
> > >
> > >
> > >
> >
> >=
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>Paul ,B
>Central TV&Video
>911W Grand Ave
>Grover Beach Ca.
>(805)481-8084
>
>
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