[TechAssist] Re: Toshiba 43H71 repeat vertical failure
- From: Jorge Camboni <geo@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 12 Jun 2004 00:23:36 -0500
You can't use a plain LA7833 in those Toshiba sets, just take a look at
the datasheet and measure the operating voltage.... it's going to die at once
The LA7833S (probably means selected) even without the S on the IC case,
works fine, provided it is suplied by Toshiba.
Jorge Camboni, GY Electronics, Richardson, TX
At 04:40 p.m. 11/06/2004 -0400, you wrote:
>It's a puzzle isn't it? Mine is in an OEM bag that says LA7833S on the bag
>but no 'S' on the part. Maybe the 'S' means 'Select' where they torture
>them in a tester and if they survive.... Who knows?
>I surely don't remember there being an 'S' on the original either.
>Joel Jacobs
>Ohio Consumer Electronics
>Pickerington, Ohio
>
>----- Original Message -----
>From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Friday, June 11, 2004 4:31 PM
>Subject: [TechAssist] Re: Toshiba 43H71 repeat vertical failure
>
>
> > I ordered the IC (online) and it said LA7833S right on the invoice.
> > Phillip R Hull STET
> > phil245@xxxxxxxxxxxxx
> > FAX 517--569-3075
> > Professional Technicians only
> > ----- Original Message -----
> > From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Friday, June 11, 2004 4:13 PM
> > Subject: [TechAssist] Re: Toshiba 43H71 repeat vertical failure
> >
> >
> > > Well I called Toshiba and asked if they knew the difference between the
> > two
> > > ic's and they didn't. I don't have one in stock to compare, but I
>will
> > > order one from Toshiba today and see what I get.
> > >
> > > Phillip R Hull STET
> > > phil245@xxxxxxxxxxxxx
> > > FAX 517--569-3075
> > > Professional Technicians only
> > > ----- Original Message -----
> > > From: "Joel Jacobs" <jj@xxxxxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, June 11, 2004 3:19 PM
> > > Subject: [TechAssist] Re: Toshiba 43H71 repeat vertical failure
> > >
> > >
> > > > Well, I got my parts from tritronics today. The bag says p/n 23319787
> > > > LA7833S and it's a Toshiba bag, but the part in the bag is just a
>plain
> > > old
> > > > (overpriced) LA7833 - no 'S':>(
> > > > Joel Jacobs
> > > > Ohio Consumer Electronics
> > > > Pickerington, Ohio
> > > >
> > > > ----- Original Message -----
> > > > From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Wednesday, June 09, 2004 11:34 AM
> > > > Subject: [TechAssist] Re: Toshiba 43H71 repeat vertical failure
> > > >
> > > >
> > > > > That is the correct part # for LA7833S
> > > > > Phillip R Hull STET
> > > > > phil245@xxxxxxxxxxxxx
> > > > > FAX 517--569-3075
> > > > > Professional Technicians only
> > > > > ----- Original Message -----
> > > > > From: "Joel Jacobs" <jj@xxxxxxxxxxxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Wednesday, June 09, 2004 11:06 AM
> > > > > Subject: [TechAssist] Re: Toshiba 43H71 repeat vertical failure
> > > > >
> > > > >
> > > > > > I found a couple at Tritronics but not under the LA7833S number.
>If
> > I
> > > > put
> > > > > > in the Toshiba P/N 23319787 they showed it in stock. Keeping my
> > > > fingers
> > > > > > crossed that it's the right part...
> > > > > > Joel Jacobs
> > > > > > Ohio Consumer Electronics
> > > > > > Pickerington, Ohio
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
> > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > Sent: Wednesday, June 09, 2004 9:42 AM
> > > > > > Subject: [TechAssist] Re: Toshiba 43H71 repeat vertical failure
> > > > > >
> > > > > >
> > > > > > > I have always ordered mine from Toshiba. But I think you can
> > order
> > > > from
> > > > > > > partsolver.com or the Sears web site. www3.sears.com
> > > > > > > Phillip R Hull STET
> > > > > > > phil245@xxxxxxxxxxxxx
> > > > > > > FAX 517--569-3075
> > > > > > > Professional Technicians only
> > > > > > > ----- Original Message -----
> > > > > > > From: "Joel Jacobs" <jj@xxxxxxxxxxxxxxxx>
> > > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > > Sent: Tuesday, June 08, 2004 5:27 PM
> > > > > > > Subject: [TechAssist] Re: Toshiba 43H71 repeat vertical failure
> > > > > > >
> > > > > > >
> > > > > > > > No kidding? I don't have the original anymore but I didn't
> > notice
> > > > > that.
> > > > > > > If
> > > > > > > > that's the case then theta's probably the problem..
> > > > > > > > I haven't found anywhere that has the 'S' version in stock
>yet -
> > > > > anyone
> > > > > > > know
> > > > > > > > where I could order one? MCM has 24 day backorder -
>Tritronics
> > > has
> > > > > none
> > > > > > > but
> > > > > > > > can order one - B&D does not list it - slelectronics.net lists
> > two
> > > > > > > la7833's
> > > > > > > > one from Korea and one from Japan but neither is the 'S'
> > > version...
> > > > > > > > Joel Jacobs
> > > > > > > > Ohio Consumer Electronics
> > > > > > > > Pickerington Ohio
> > > > > > > >
> > > > > > > >
> > > > > > > > ----- Original Message -----
> > > > > > > > From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
> > > > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > > > Sent: Tuesday, June 08, 2004 4:03 PM
> > > > > > > > Subject: [TechAssist] Re: Toshiba 43H71 repeat vertical
>failure
> > > > > > > >
> > > > > > > >
> > > > > > > > > That set uses a LA7833S and it may be different because
> > NTE
> > > > > showed
> > > > > > > no
> > > > > > > > > sub on the web site.
> > > > > > > > > Phillip R Hull STET
> > > > > > > > > phil245@xxxxxxxxxxxxx
> > > > > > > > > FAX 517--569-3075
> > > > > > > > > Professional Technicians only
> > > > > > > > > ----- Original Message -----
> > > > > > > > > From: "Ohio Consumer Electronics" <jj@xxxxxxxxxxxxxxxx>
> > > > > > > > > To: "Tech Assist" <techassist@xxxxxxxxxxxxx>
> > > > > > > > > Sent: Tuesday, June 08, 2004 3:31 PM
> > > > > > > > > Subject: [TechAssist] Toshiba 43H71 repeat vertical failure
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > > Set came in with no vertical deflection. Replaced LA7833
>and
> > > it
> > > > > > looked
> > > > > > > > > fine.
> > > > > > > > > > About three weeks later it's back with same problem. I
>put
> > in
> > > a
> > > > > new
> > > > > > > > > LA7833
> > > > > > > > > > and it blew immediately! I couldn't find any other
>problem
> > so
> > > I
> > > > > > > figured
> > > > > > > > > > maybe a bad new part so replaced it again and it worked ok
> > > this
> > > > > > time.
> > > > > > > > Ran
> > > > > > > > > a
> > > > > > > > > > bit hot after a while but that's normal with these newer
> > cost
> > > > > > reduced
> > > > > > > > > > designs. I sent it home. Well 1 week later and it's back
> > > > again!
> > > > > > > Same
> > > > > > > > > > problem. Customer said it played all day the day before
>but
> > > > today
> > > > > > it
> > > > > > > > > played
> > > > > > > > > > only 10 minutes and went out. The LA7833 would not have
> > been
> > > > that
> > > > > > hot
> > > > > > > > > after
> > > > > > > > > > only 10 minutes so I don't think it's a thermal problem -
> > that
> > > > and
> > > > > > the
> > > > > > > > > fact
> > > > > > > > > > that one blew right away. I can't find any bad
>connections
> > > > > > anywhere.
> > > > > > > I
> > > > > > > > > > really need some help with this one, the customers been
> > pretty
> > > > > good
> > > > > > > > about
> > > > > > > > > it
> > > > > > > > > > so far but I think this may be my last chance to get it
> > > right...
> > > > > > > > > > I'll appreciate any tips/suggestions - Thanks Much!
> > > > > > > > > >
> > > > > > > > > > Joel Jacobs
> > > > > > > > > > Ohio Consumer Electronics
> > > > > > > > > > Pickerington, Ohio
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
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