[TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
- From: Alvin Rose <ajroseca@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 22 Aug 2003 00:08:09 -0700
Hi Andrew
The capacitor was C841 not C840 in that circuit.
>he asked for c841 or I made a mistake sorry
>Andrew Rose
>Action TV
>----- Original Message -----
>From: <tvservice@xxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Thursday, August 21, 2003 10:38 AM
>Subject: [TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
>
>
>
>
>>I'm looking at sams 2670 folder 2 on TAC8820 chassis, it shows C840
>>
>>
>negative
>
>
>>lead to ground pin 8 of T840 is ground.
>>positive lead goes thru R842 18ohm 1watt to pin 1 of Q840.
>>Robert
>>tvservice@xxxxxxxxxxxxx
>>H & H Electronics Inc
>>Dallas, TX
>>----- Original Message -----
>>From: "Andrew Rose" <badandy2@xxxxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Thursday, August 21, 2003 12:02 AM
>>Subject: [TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
>>
>>
>>
>>
>>>+ side goes to pin 8 of Xformer
>>>Andrew Rose
>>>Action TV
>>>----- Original Message -----
>>>From: <tvservice@xxxxxxxxxxxxx>
>>>To: <techassist@xxxxxxxxxxxxx>
>>>Sent: Thursday, August 21, 2003 6:52 AM
>>>Subject: [TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
>>>
>>>
>>>
>>>
>>>>Check the polarity installation of the cap C841
>>>>you may have installed backward
>>>>Robert
>>>>tvservice@xxxxxxxxxxxxx
>>>>H & H Electronics Inc
>>>>Dallas, TX
>>>>----- Original Message -----
>>>>From: "Alvin Rose" <ajroseca@xxxxxxxxxxxxxxx>
>>>>To: <techassist@xxxxxxxxxxxxx>
>>>>Sent: Thursday, August 21, 2003 2:18 PM
>>>>Subject: [TechAssist] Re: Toshiba Model cx2950c chassis 8820 Dead
>>>>
>>>>
>>>>
>>>>
>>>>>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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