[TechAssist] Re: CTC187CL3 blows Horz. output tr
- From: Al Gutz <alg@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sun, 17 Aug 2003 21:13:19 -0400
Peter
Good idea to post the date code on any of this type stuff and everyone
can keep it on file to ckeck. I have posted a couple.
Al G
Al's TV-Electronics
Pembroke Ont.
Canada
Peter oliver wrote:
>
> There is another possibility Where did you get your BUH517? I have found
> that ones with date code 9556 are usually bad. they overheat and fail in the
> manner you describe. (interally they look like reproduction parts--silicone
> seal over the die, a tinned heatsink, and a 30% smaller die, the original
> had a Copper substright and no silicone)
>
> Peter OLiver
> Tucson Radio TV
>
> From: "junior hurdle" <jselectronics@xxxxxxxxxxxx>
> Reply-To: techassist@xxxxxxxxxxxxx
> To: <techassist@xxxxxxxxxxxxx>
> Subject: [TechAssist] Re: CTC187CL3 blows Horz. output tr
> Date: Sun, 17 Aug 2003 20:08:13 -0400
>
> J'S electronics
> Howells + RD
> St. Michael
> Barbados
> Phone# 246-4298535
> email jselectronics@xxxxxxxxxxxx
> ----- Original Message -----
> From: "junior hurdle" <jselectronics@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, August 17, 2003 2:41 AM
> Subject: [TechAssist] CTC187CL3 blows Horz. output tr
>
> > 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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