[TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
- From: "George" <grndmstrg@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 21 Aug 2003 06:46:03 -0700
Alvin,
Check the supply diodes, might have high level ac being applied to caps
rather than pulsed dc.
George
Afana Electronics
Moreno Valley, CA
----- Original Message -----
From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, August 21, 2003 12:08 PM
Subject: [TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
> Hi Jeff
> the capacitors replaced were high ESR ..C841 blew out again after I
> replaced
> Q801 and Q802..replaced it with a 160 volt rating but it gets hot after
> a short
> time..Set comes on but is in on the sides..Is the rectifier D840 fast
> switching
> or regular diode Do you have the voltage rating of the zener D841
> thanks
> Alvin
> Intrepid Video Support wrote:
>
> >Alvin,
> >This sounds like the same set I am working on.
> >Were those capacitors you replaced high ESR?
> >Also...check the two diodes side bng
> >Intrepid Video TV/VCR
> >263 S Front St
> >Steelton PA 17113
> >fax...717-564-4952
> >www.intrepid-video.com www.tech-repair.net
> >
> >----- Original Message -----
> >From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Wednesday, August 20, 2003 7:42 PM
> >Subject: [TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
> >
> >
> >Hi Ed
> >c822 was changed with a 100 Mfd 50 volt electrolytic and r820 checks ok
> >at 68 ohms ...Is there anything else that can cause this problem..I have
no
> >schematic for this one...Will replace c841 with a higher voltage unit
> >A.R
> >
> >
> >>-Ed-
> >>Tel-Tek Electronics
> >>Ontario-Canada
> >>teltek3@xxxxxxxxxxxx
> >>----- Originaere anything l Message -----
> >>From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
> >>To: <techassist@xxxxxxxxxxxxx>
> >>Sent: Wednesday, August 20, 2003 6:13 PM
> >>Subject: [TechAssist] Toshiba Model cx2950c chassis 8820 Dead
> >>
> >>
> >>
> >>
> >>
> >>
> >>>Hi Guys
> >>>
> >>>We have a toshiba CX2958c chassis 8820 which was dead
> >>>replaced c863 and c866 also c841... Replaced voltage
> >>>regulators Q801 and Q802 set came on but after a few
> >>>seconds blew the case off C841 again..Any help on this
> >>>unit would be appreciated ... also value of C841
> >>>Alvin Rose
> >>>Radio & Tv Centre
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
>
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