[TechAssist] Re: Toshiba TP4870B Projection TV Dead, chassis#?

  • From: "Jeff F" <jlfonz@xxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Sat, 20 Dec 2003 09:38:04 -0600

CRT=Cathode ray tube (picture tube)  CBA=circuit board assembly

TV Doctor
avalon, Wi

Heading out for christmas shopping---ugh


----- Original Message ----- 
From: "Kevin" <kevintv@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, December 20, 2003 12:58 AM
Subject: [TechAssist] Re: Toshiba TP4870B Projection TV Dead, chassis#?


> What is the CRT cba?
>
> Kevin Wilks
> Kevin's TV & Video Repair
> Penticton BC Canada
> kevintv@xxxxxxx
>
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Jeff F
> Sent: Friday, December 19, 2003 9:23 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: Toshiba TP4870B Projection TV Dead, chassis#?
>
> If you pull the yoke plug---just make sure to disconnect the CRT cba for
> the
> same tube at the same time.  That should prevent any burning of the
> phospher.
>
> TV Doctor
> Avalon, Wi
>
>
> ----- Original Message ----- 
> From: "Kevin" <kevintv@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, December 19, 2003 9:45 PM
> Subject: [TechAssist] Re: Toshiba TP4870B Projection TV Dead, chassis#?
>
>
> > I had a Toshiba that was 4 years old do the same thing.  The solution
> > turned out to be the red yoke was shorted.  Ring the yokes to see if
> one
> > rings different from the others.  You can also use an ohm meter to
> > measure the resistance of the windings.  I tested mine by pulling one
> > yoke at a time and turning it on.    When I pulled the red yoke the
> set
> > stayed on.  I was told by another tech that pulling one yoke at a time
> > could damage the set.  Try the first two methods first.  HTH
> >
> > Kevin Wilks
> > Kevin's TV & Video Repair
> > Penticton BC Canada
> > kevintv@xxxxxxx
> >
> >
> > -----Original Message-----
> > From: techassist-bounce@xxxxxxxxxxxxx
> > [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Jerry
> > Sent: Friday, December 19, 2003 6:38 PM
> > To: techassist@xxxxxxxxxxxxx
> > Subject: [TechAssist] Toshiba TP4870B Projection TV Dead, chassis#?
> >
> > Dead set. When this is plugged in, will come on for an instant with
> high
> > voltage and shut down. Standby supplies are there. Micro has power,
> and
> > key & remote input seems to be there.  I have no data for this set
> > (about 10 years old) and don't want to have to order it for a set this
> > old.  If anyone has lit. for this I could beg, borrow or can be
> > uploaded, I would appreciate it or any tips for this set.  By the way,
> > my job situation has changed so I haven't had time recently to get on
> > here very much, I hope that will change soon.
> > Jerry Eiting
> > Christians Electronic Service
> > Troy, Ohio
> >
> >
> >
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