[TechAssist] Re: ctc169pt lightbox no raster no audio
- From: "Larry E." <videotech@xxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 20 Jul 2002 20:29:05 -0400
Charles, is the OSD working ? if it`s there but shifted to one side and
distorted check for a leaky C3302 off pin 5 of U3200. If the OSD is a
series of blocks instead of normal characters check
pin 8 of U3200 for 5 volts if not there re-solder both ends of JW325
whether it looks bad or not.
Another common item for both audio and video would be the 9 volt source,
if it`s missing you
would lose both, (collector source voltage for Q1201 audio buffer, Q2701
video buffer). The
only other tip I have on no sound or video is ; leaky CR4101 RCA #
207878. hth
Larry Eastman
American Tv & Electronics
Crystal River, Fl.
www.tvjunkyard.com
repair1 wrote:
>Ctc169 lightbox has hv, filaments, no raster, no audio,collector of q7048 is
>0, so I assume it is not in scan loss mode, turning up g2 controls produces
>no raster, any help would be greatly appreciated.
>charles betzler
>Best Electronics
>repair1@ix,netcom.com
>
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