[TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
- From: "teltek3" <teltek3@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 22 Aug 2003 15:03:13 -0400
Good to know....
Now...do we deserve a "Signature File"? ;-)
-Ed-
Tel-Tek Electronics
Ontario-Canada
teltek3@xxxxxxxxxxxx
----- Original Message -----
From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, August 22, 2003 8:49 PM
Subject: [TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
> Hi ED
> The problem was a leaky D840 which tested ok..
> I replaced it and it is running ok now..It is a fast recovery diode
> NTE-552 which was provided by one of the Techs..I had a lot
> of help on this one from the list...Thanks Guys your help has been
> appreciated.
> Alvin
> Teltek3 wrote:
>
> >I think I mentioned this before. When you chnged the Regulator, did you
put
> >it inthe right way, some non-OEM regulators have the legs formed the
wrong
> >way.
> > I have been a Toshiba ASC for years, and this circuit gave no other
> >problems after changing the components mentioned. I would suggest you
> >backtrack on the replacements you have done.
> >
> >-Ed-
> >Ed Gaidies
> >Tel-Tek Electronics
> >Ontario-Canada
> >teltek3@xxxxxxxxxxxx
> >----- Original Message -----
> >From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Thursday, August 21, 2003 3:08 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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