[TechAssist] Re: CTC185AA4 SMPS high voltage TV shuts down 3 clicks
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 2 Oct 2003 13:36:45 -0400
Did you ring the flyback? Three clicks usually means bad flyback.
Al Marquardt
ampm@xxxxxxx
Al Marquardt Electronic Repair
206 W Main
Girardville Pa. 17935
----- Original Message -----
From: "Glenn Larkman" <mail@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, October 02, 2003 11:55 AM
Subject: [TechAssist] Re: CTC185AA4 SMPS high voltage TV shuts down 3 clicks
> Warren,
>
> Try these from Winstips
>
> R4114 Open 10k
>
> Cr4704 12v Scan Supply Int Or Leaky. Micro Senses No Voltage And Shuts
Down
> Cr4704 12v Scan Supply Int Or Leaky. Micro Senses No Voltage And Shuts
> Down. There Will Be No 12v To Xstr Chain Supplying Q4114 Base Bias Due To
> R4710(233898) &/Or R4119 Opening. Also Install 231523 Kit!!!
>
> Remove C3126, clean board underneath
>
> Check For 5vdc On U7401 Pin 9 In Tuner Section. If Missing May Have Broken
> Trace Between Q4106 & U7401
>
> Glenn Larkman
> Audiotech
> 256 Nth Hwy 101
> ENCINITAS CA 92024
> 760 944 9048
> FAX 944 0345
> mail to"mail@xxxxxxxxxxxxx"
> "www.audiotech.net"
> ----- Original Message -----
> From: "Warren C." <warrenca@xxxxxxxxx>
> To: "techassist" <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, October 01, 2003 9:04 PM
> Subject: [TechAssist] CTC185AA4 SMPS high voltage TV shuts down 3 clicks
>
>
> Hi All
>
> THis set has a Fet switcher in the SMPS
> Can anyone tell me how to test this part with a dvm or can it be??
> The part reads totally open at one time and at other times has some
> resistance in it???
> The output B+ 130 V is high---about 160V
> I believe that's why the set can't keep running.
> The set will run for a few sec's if you unplug the hydro for about 20
> mins. then Quits.
>
> All comments welcome
> TIA
> Warren Campbell
> Campbell's TV & Appliances
> Cannington
> Ont
>
>
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