Re: Toshiba TV CX2780A help needed
- From: "I_service" <idk3688_nospam@xxxxxxxxxxxxx>
- Date: Thu, 13 Oct 2005 23:33:50 GMT
Don't remember seeing any electrolytic cap inside tuner module but a bunch
of tiny surface mount caps, coils, a xtal and an IC. Do you mean IF module?
I have not looked inside the IF module yet.
Thanks.
"Max Harding vk3jin" <maxh10@xxxxxxxxxxxxxxx> wrote in message
news:434e091d$0$29436$afc38c87@xxxxxxxxxxxxxxxxxxxxxxx
> check the electro's inside the tuner..........i have had these do go
> faulty
> at times.
> "I_service" <idk3688_nospam@xxxxxxxxxxxxx> wrote in message
> news:_E_2f.19596$0c.1949@xxxxxxxxxxxxxxxxxxxxxxx
>> Need help with this 14 year old (but still has excellent picture quality)
>> Toshiba 27" TV CX2780A, chasis no. TAC9160.
>> After TV on for about 30~45 mins., pictures from off air reception starts
> to
>> roll and break up, however, pictures from composite video or S video
>> input
>> is not affected and of excellent quality. Appears to be a bad solder
>> joint
>> but could not pin point problem area. Help from anyone who has worked on
>> this set with similar problem will be appreciated. Have service manual.
>>
>> What I have done so far with no success:
>> * Check ESR of electrolytics near tuner module (such as C065, C062,
>> C063),
>> replace all caps with marginal ESR reading
>> * Re-solder all joints around tuner module
>> * Check Q201, no problem with this transistor
>> * Remove and open tuner module, re-solder all suspected joints
>>
>> Could it be tuner module has gone bad, or there is still a poor solder
> joint
>> or bad cap somewhere?
>> Please remove _nospam from email address if direct reply.
>>
>> Thanks
>>
>>
>
>
.
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