[TechAssist] Re: RCA CTC187CK G31642CK part ID & CE short
- From: Al Gutz <alg@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 23 Nov 2002 23:18:23 -0500
Fly pin 3 is from power supply, pin 2 goes to HOT, pin 1 goes to high
side of yoke. Unplug yoke, if short still there and you checked the
parts mentioned by Bob then you must have a short somewhere in a trace.
AL G
peggs wrote:
>
> Which pin goes to the HOT Collector ???
> Ring that pin with the other pins connected to it(continuity).
> But more important in your case,is the HOT Collector pin Shorted
> to the Ground Pin ???
>
> Peggs
>
> At 05:54 PM 11/22/02 -0500, Larry E. wrote:
> >
> >Bob, thanks for the info, went and pulled the caps and then the diodes,
> >still had short, pulled fly out of the board and short is gone,
> >couldn`t isolate pin 2 from the grommett. I have continuity on the pins=20
> >as follows, 1,2,3 578, 6&10, 4 has no connection to any other pin, 9=20
> >has no connection to any other pin. Is this correct continuity for fly?
> >Thanks for all your help, Larry
> >
> >Larry Eastman
> >American TV & Electronics
> >Crystal River, Fl. 34428
> >
> >Gemini Computer & TV wrote:
> >
> >> Larry,
> >> RCA Parts Finder shows that to be part# 195918 for C4401. The schematic
> >> shows collector of Q4401 going into pin 2 of FBT. If that pin is lifted,
> >> then the only paths to ground I see are C4406, C4402 and C4407=
> (together),
> >> and CR4402 and CR4403 (together also). If that doesn't help, give us a=
> fax
> >> number and I will copy that section of the schematic and fax it to you.
> >>=20
> >> Bob Waterman, CET=AE #RI-28
> >> Master Technician License #9109
> >> Service Manager
> >> Gemini Computer, TV, & Security Alarms
> >> (508)695-7302
> >> (508)695-7769 FAX
> >> geminitv@xxxxxxxxxxxxxxxx
> >> geminitv@xxxxxxx
> >>=20
> >> ----- Original Message -----
> >> From: "Larry E." <videotech@xxxxxxxxxxxx>
> >> To: <techassist@xxxxxxxxxxxxx>
> >> Sent: Friday, November 22, 2002 4:34 PM
> >> Subject: [TechAssist] RCA CTC187CK G31642CK part ID & CE short
> >>=20
> >>=20
> >>=20
> >>>Hi guys, working on a RCA CTC187CK and I have a dead short C-E on the
> >>>HOT traces (transistor removed from board) the transistor is good, In
> >>>trying to remove all the common parts I broke surface mount cap C4401
> >>>and I need the oem part #, I`m working without a print, have the 188
> >>>but it`s not even close, I also removed C4406 and I still read short
> >>>C-E. It appears it`s through the flyback??? Don`t read short on C4402`s
> >>>side away from the HOT, could someone give me any other parts to pull
> >>>that would cause these traces to read short, tia, Larry E
> >>>--
> >>>Larry Eastman
> >>>American TV & Electronics
> >>>Crystal River, Fl.
> >>>http://www.tvjunkyard.com
> >>>
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> >
> >
> >--=20
> >Larry Eastman
> >American TV & Electronics
> >Crystal River, Fl.
> >http://www.tvjunkyard.com
> >
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> Peggs' Electronics
> 1519 West 2nd Street
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> 270-926-4968
> fax 270-686-7399
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