[TV] Re: ctc187 recall

[randy@xxxxxxxx]

In my case the STK regulator did last time I worked on these. 


randy 

 

 


ike Bates writes: 

> well, usually there is a 10uf or so cap in the STK chopper circuit that
> failes. and runs the osc out of freq. Also, it wouldnt be bad to replace the
> STK regulator, and check all the caps on the secondary side of the chopper
> transformer. 
> 
> plus also, check the rectifier diode on the secondary of the transformer.
> That can short too, if so your HOT is out again, and the osc stage in the
> chopper supply is running too high. replace that 10uf in the chopper, and
> check/replace the caps in the secondary of the chopper transformer 
> 
>  
> 
> ----- Original Message -----
> From: "tvtech" <tvtech@xxxxxxxxxxxxx>
> To: <tv@xxxxxxxxxxxxxxx>
> Sent: Sunday, September 05, 2004 12:53 PM
> Subject: [TV] ctc187 recall 
> 
> 
>> hi guys
>> I am in a bind on this one i had a ctc187 chassis hot shorted replaced fly
> and hot transistor  test it for 2 days it wking ok took it to the cust
> lasted 3 days cust called back same high pitch squeal. any other
> sugestions?any help will be greatly appreciated
>>
>> thank you 
>>
>> pete
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