[TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead

  • From: Alvin Rose <ajroseca@xxxxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Thu, 21 Aug 2003 12:18:38 -0700

Hi Al
checked the installation of the Str regulator and it has the sk4512
code on it..I installed it same as unit removed..Is there a difference
pinout with this code..Set now comes on but C841 is overheating
and is in on the sides.
Alvin
Al Gutz wrote:

>Alvin
>
> Watch the STR  for code SK4512, check resistance before installing.
>
>AL G
>Al's TV-Electronics
>Pembroke Ont.
>Canada
>
>teltek3 wrote:
>  
>
>>Here's the "Poop"
>>Change...
>>R820....68 ohm 1/2 watt
>>C841....22ufd/50V
>>C822....920 ohm 1/2 watt
>>Q802....STR-D1005T (Be careful with this Replacement, some Generics have the
>>pins pre-formed in the opposite direction, so when pulling out original make
>>note of the way this Regulator was positioned...writing facing in the same
>>direction as the one removed.)
>>
>>Only other thing may be that you have the polarity of C841 reversed...check
>>that.
>>
>>-Ed-
>>Tel-Tek Electronics
>>Ontario-Canada
>>teltek3@xxxxxxxxxxxx
>>----- 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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