[TechAssist] Re: Toshiba TP50F90 color intermittent
- From: tjanphyl@xxxxxxxxxxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 25 Nov 2005 19:08:12 -0500
OK. Now: since I am showing my ignorance here I might as well go for
the car, behind door #2!
How exactly does a hole "go bad"? You mean poor solder flow thru them?
Reflow solder is the fix?
Phil
Phil Bader, Pres.
Jan Phyl TV Inc
Winter Haven, Fl
(863) 299-8821
Confounding the wise since 1976
personal email: pbader@xxxxxxxxxxxxxxx
----- Original Message -----
From: becyn <becyn@xxxxxxxxxx>
Date: Friday, November 25, 2005 5:16 pm
Subject: [TechAssist] Re: Toshiba TP50F90 color intermittent
> You know, 'through holes" to make connections on multi-layered and
> double sided boards?
> "Via" is the pcb industry "politically correct" term for the things.
>
> Jim McVey
> McVey Alltronix
> 327 Broadway
> Newburgh N.Y. 12550
>
> "If it doesn't play...
> CALL MCVEY !!!!!!"
> Factory authorized
> service for over 20
> major brands.
> 845 561 8383
> (Last of the Mohegans)
>
> tjanphyl@xxxxxxxxxxxxxxx wrote:
>
> >have bad via's ????
> >Phil
> >
> >Phil Bader, Pres.
> >Jan Phyl TV Inc
> >Winter Haven, Fl
> >(863) 299-8821
> >Confounding the wise since 1976
> >personal email: pbader@xxxxxxxxxxxxxxx
> >
> >----- Original Message -----
> >From: becyn <becyn@xxxxxxxxxx>
> >Date: Friday, November 25, 2005 1:46 pm
> >Subject: [TechAssist] Re: Toshiba TP50F90 color intermittent
> >
> >
> >
> >>Yes, Toshiba's "hyper or scan converter pcb's have been dropping
> >>like
> >>flies lately around here.
> >>Some of them seem to have bad via's which are sensitive to
> >>tapping, or
> >>twisting the can slightly.
> >>
> >>Jim McVey
> >>McVey Alltronix
> >>327 Broadway
> >>Newburgh N.Y. 12550
> >>
> >>"If it doesn't play...
> >>CALL MCVEY !!!!!!"
> >>Factory authorized
> >>service for over 20
> >>major brands.
> >>845 561 8383
> >>(Last of the Mohegans)
> >>
> >>Carol Rundle wrote:
> >>
> >>
> >>
> >>>If your model has standup shielded module( hyper brd.) just
> >>>
> >>>
> >>behind A/V jack panel, try a little freeze, and heat, inside
> >>module. if it simulates your symtoms, remove brd., ESR lytics
> ,
> >> I've repaired several Toshiba hyper brd's, found
> >>weak,leaky smd lytics, usually find several (8-10)weak,leaky !
> >>Causing symtom's similar to your 's.. hth
> >>
> >>
> >>>Bill
> >>> Bill'sTV
> >>> Sonora,Calif.
> >>>
> >>>
> >>>Ian Scott <service.depot@xxxxxxxxxxx> wrote:Hello, This set is
> in
> >>>
> >>>
> >>the customer's home and intermittently loses
> >>
> >>
> >>>color. When there is no color, the black and white picture has
> a
> >>>
> >>>
> >>noise>in it that appears like you're looking through a screen
> >>door. Both the
> >>
> >>
> >>>main picture and PIP will lose color. When I remove the rear
> >>>
> >>>
> >>cover to
> >>
> >>
> >>>work on it, after 10 minutes or so the problem won't occur
> >>>
> >>>
> >>anymore. I
> >>
> >>
> >>>have tried to heat up the pc boards with a hair dryer, but the
> >>>
> >>>
> >>symptom>won't return (until I leave). I suspect the comb filter.
> >>
> >>
> >>>The customer normally watches digital cable and he has had the
> >>>
> >>>
> >>cable box
> >>
> >>
> >>>replaced. I have asked the customer to try using his DVD to see
> >>>
> >>>
> >>if it
> >>
> >>
> >>>loses color as well, but so far the results are inconclusive.
> >>>Thanks in advance for any help.
> >>>Ian Scott
> >>>Service Depot
> >>>252 Lasalle Blvd.
> >>>Sudbury, ON
> >>>P3A 1W6
> >>>705-566-3557
> >>>Fax 705-566-3455
> >>>
> >>>
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