[TechAssist] Re: Toshiba 57HDX82 - No picture (Repeat failure)
- From: "tvservice" <tvservice@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 7 Dec 2004 16:24:26 -0600
No
it is in the secondary side of switch mode power supply
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
----- Original Message -----
From: "Edward Gaidies" <teltek3@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, December 07, 2004 4:07 PM
Subject: [TechAssist] Re: Toshiba 57HDX82 - No picture (Repeat failure)
> Then we are not referring to Raw B+ supply.
>
> -Ed-
> Ed Gaidies
> Tel-Tek Electronics
> Ontario-Canada
> teltek3@xxxxxxxxxxxx
> teltek@xxxxxxxxx
>
> On 7-Dec-04, at 4:44 PM, tvservice wrote:
>
> > It is high frequency circuit
> > I have tried 4 different replacement as well as 4 seperate RCA 243636
> > diodes
> > and none would hold up.
> > After giving up and calling Toshiba tech-line they told me MUST use
> > exact
> > replacement diode for D851 bridge
> >
> > I'm sure an exact generic D4SBS6 would work but the original Toshiba
> > #23357215 special fast switching is only $4.00
> > Robert
> > tvservice@xxxxxxxxxxxxx
> > H & H Electronics Inc
> >
> >
> > ----- Original Message -----
> > From: "Gary McCartney" <gary@xxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Tuesday, December 07, 2004 3:21 PM
> > Subject: [TechAssist] Re: Toshiba 57HDX82 - No picture (Repeat failure)
> >
> >
> >> Just curious, what is there to a bridge rectifier that it needs to be
> >> replaced with an exact part? Is it in a high frequency circuit?
> >>
> >> I've always found that as long as the source is 60 cycles and a bridge
> >> is replaced with one of same or higher current and voltage ratings,
> >> that
> >> there is no problem.
> >>
> >>
> >>
> >>
> >> Gary McCartney
> >>
> >> McCartney Electronics
> >> Guelph Ontario Canada
> >> Est. 1984
> >> email: gary (at) number63.ca
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> tvservice wrote:
> >>> Also check D851 bridge rectifier for possible leakage or short.
> >>> if shorted/leaky will also blow these fuses within several minutes
> >>> of on
> >>> time.
> >>> Replace bridge only with exact Toshiba number
> >>> Robert
> >>> tvservice@xxxxxxxxxxxxx
> >>> H & H Electronics Inc
> >>>
> >>>
> >>> ----- Original Message -----
> >>> From: "Dan Garris" <dgarris@xxxxxxxxxxx>
> >>> To: <techassist@xxxxxxxxxxxxx>
> >>> Sent: Monday, December 06, 2004 4:40 PM
> >>> Subject: [TechAssist] Re: Toshiba 57HDX82 - No picture (Repeat
> >>> failure)
> >>>
> >>>
> >>>
> >>>> Just wanted to be sure I resolder the correct areas to prevent
> >>>> another
> >>>> repeat failure.
> >>>> This is what I have replied back to me from Dave Van Santen @ Dukes
> >>>> Electronics
> >>>> 250 Edgewood Drive Woodstock, Ont........
> >>>>
> >>>> ....."The set has several pico fuses at the power supply. You likely
> > have
> >>>
> >>> a
> >>>
> >>>> 5A
> >>>> and a 2A open. Resolder the poor jumper connections along the side
> >>>> of
> >>>> the convergence board where the wire plug/connectors are....."
> >>>>
> >>>> Thanks, I'll look in that area and resolder all of them!
> >>>>
> >>>> Dan Garris
> >>>> Garris TV
> >>>> New Bern, NC
> >>>> dgarris@xxxxxxxxxxx
> >>>>
> >>>>
> >>>>> From: "Dan Garris" <dgarris@xxxxxxxxxxx>
> >>>>> Reply-To: techassist@xxxxxxxxxxxxx
> >>>>> To: techassist@xxxxxxxxxxxxx
> >>>>> Subject: [TechAssist] Toshiba 57HDX82 - No picture (Repeat failure)
> >>>>> Date: Mon, 06 Dec 2004 17:29:02 -0500
> >>>>>
> >>>>> Below set came back in next day with same problem....F851 5A open
> >>>>> and
> >>>
> >>> F853
> >>>
> >>>>> 1.25A
> >>>>> open again,...
> >>>>>
> >>>>> ....One of the Techs on the three different groups I posted to,
> >>>>> replied
> >>>>> back
> >>>>> to my post over the weekend about resoldering the board or the set
> > would
> >>>>> come back with the same blown fuses, well it did come back in. I am
> >>>
> >>> posting
> >>>
> >>>>> to ask, where to check to resolder on the board?
> >>>>>
> >>>>> Garris Radio & TV
> >>>>> New Bern, NC
> >>>>> Dan Garris
> >>>>> dgarris@xxxxxxxxxxx
> >>>>>
> >>>>>
> >>>>> Replaced open Pico fuses on Power Supply board, F851 5A open and
> >>>>> F853
> >>>
> >>> 1.25A
> >>>
> >>>>> open. All now ok! Picture is restored. This happened after a power
> > surge
> >>>>> according to customer.
> >>>>>
> >>>>> Garris Radio & TV
> >>>>> New Bern, NC
> >>>>> Dan Garris
> >>>>> dgarris@xxxxxxxxxxx
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>> From: "Dan Garris" <dgarris@xxxxxxxxxxx>
> >>>>>> Reply-To: techassist@xxxxxxxxxxxxx
> >>>>>> To: techassist@xxxxxxxxxxxxx
> >>>>>> Subject: [TechAssist] Toshiba 57HDX82 - No picture, has Audio??
> >>>>>> Date: Sat, 04 Dec 2004 12:17:53 -0500
> >>>>>>
> >>>>>> What: 57" Big Screen TV
> >>>>>> Make: Toshiba
> >>>>>> Model: 57HDX82
> >>>>>> Chassis: TAC0274
> >>>>>> Made: Jan 2003
> >>>>>>
> >>>>>> Problem: Has good Audio, but NO PICTURE or OSD, Tube filaments
> >>>>>> are
> >>>>>> lighting
> >>>>>> up.
> >>>>>>
> >>>>>> I did a google search appears several people have had this
> >>>>>> problem but
> >>>
> >>> I
> >>>
> >>>>>> see
> >>>>>> no tips on any of my databases. Any Help??
> >>>>>>
> >>>>>> Garris Radio & TV
> >>>>>> New Bern, NC
> >>>>>> Dan Garris
> >>>>>> dgarris@xxxxxxxxxxx
> >>>>>
> >>>>>
> >>>>>
> >>
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