[TechAssist] Re: CTC187CL3 blows Horz. output tr
- From: Jorge Camboni <geo@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sun, 17 Aug 2003 02:14:56 -0500
Tipically, the 0.047 X 400v in the horizontal output stage.
I use 2SD1886 - 2SD1887 instead of BUH517 They run colder
and are more reliable. 2SC5148 works great too.
HTH Jorge
At 02:41 a.m. 17/08/03 -0400, you wrote:
>Hi techs
>I replaced the FBT , the hot (BUH517) and C709 (47mf @ 25V) in this
>ctc-187CL3 rca.
>Before I could adjust the screen and focus the HOT shorted out again. I
>replaced the
>HOT again to see if it was heating rapidly. After 30 seconds I checked the
>transistor
>and found it to be very hot . I plugged the set in again and before I
>could turn it on the
>HOT shorted out again. I checked all components in the horz.circuit as
>well as the
>signal going to the horz. output but they all checked ok.
>could any one tell me what could be causing this transistor to keep shorting?
>thank you .
>junior Hurdle
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Jorge Camboni, GY Electronics, Richardson, TX
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