[TechAssist] Re: RCA CTC187CK G31642CK part ID & CE short
- From: "Larry E." <videotech@xxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 23 Nov 2002 14:18:11 -0500
Peggs, pin 2 goes to collector, pins 1, 2, & 3 have continuity, HOT
collector trace reads short to HOT emitter trace until I removed the
flyback from the set, don`t have the schematic so I have no idea
which pins on the fly are connected to each other. Continuity of the
fly is as follows; 1-2-3, 5-7-8, 6-10, 4&9 are not connected to
anything, (not used?) Larry E
Larry Eastman
American TV & Electronics
Crystal River, Fl. 34428
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
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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
> Owensboro,KY 42301
> 270-926-4968
> fax 270-686-7399
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--
Larry Eastman
American TV & Electronics
Crystal River, Fl.
http://www.tvjunkyard.com
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