[TechAssist] Re: RCA Proj. CTC169PA P52750WK B+ too high/dead
- From: HSWAD@xxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 27 Nov 2002 16:33:02 EST
Forget what I said-I didn't read this one correctly. Sorry-Hollis Bates,
field engineer-retired
In a message dated
11/27/02 4:30:00 PM Eastern Standard Time, HSWAD@xxxxxxx writes:
>
>
>
> You didnt say what the regulated B+ was after you changed parts. Measure it
>
> with the set ON. Hollis Bates, field engineer-retired
>
> In a message dated 11/27/02 2:33:35 PM
> Eastern Standard Time, videotech@xxxxxxxxxxxx writes:
>
>
> > Subj:[TechAssist] RCA Proj. CTC169PA P52750WK B+ too high/dead
> > Date:11/27/02 2:33:35 PM Eastern Standard Time
> > From:<A HREF="mailto:videotech@xxxxxxxxxxxx";>videotech@xxxxxxxxxxxx</A>
> > Reply-to:<A
> > HREF="mailto:techassist@xxxxxxxxxxxxx";>techassist@xxxxxxxxxxxxx</A>
> > To:<A HREF="mailto:techassist@xxxxxxxxxxxxx";>techassist@xxxxxxxxxxxxx</A>
> > Sent from the Internet
> >
> >
> >
> >
> > Hi guys, have a lightbox for a CTC169PA projection set that seems to
> > not be regulating correctly. Raw B+ is 159v, pin 16 of U4101 is 11.5v,
> > Cr4118`s cathode is 14.85v, but cathode of cr4116 is 155v, if I hold
> > down the power button this voltage drops to 80 volts and something in
> > the power supply tics, I`ve replaced, C4102,104,108, Cr4118 & C4145,
> > checked across CR4123 and have 5.6 volts, Regulated B+ was 167v before
> > replacing C4102,104 & 108. My tech notes say this problem is caused by
> > either C4102 or CR4123 is zenering at 8.6v instead of 5.6v. Obviously
> > this isn`t the problem, any ideas ??? tia, Larry E
> > --
> > Larry Eastman
> > American TV & Electronics
> > Crystal River, Fl.
> > http://www.tvjunkyard.com
> >
> > ------------------------------------------
> > To REMOVE your email address, click here:
> > http://www.tech-assist.org/unsubb.html
> > To CHANGE your email address, click here:
> > http://www.techassist.net/forms/change.html
> > ------------------------------------------
> > ***NEW*** Tips Added Instantly!!!***
> > Submit Repair Tips here:
> > http://www.tech-assist
>
>
>
> ------------------------------------------
> To REMOVE your email address, click here:
> http://www.tech-assist.org/unsubb.html
> To CHANGE your email address, click here:
> http://www.techassist.net/forms/change.html
> ------------------------------------------
> ***NEW*** Tips Added Instantly!!!***
> Submit Repair Tips here:
> http://www.tech-assist.org/secure/tip/
------------------------------------------
To REMOVE your email address, click here:
http://www.tech-assist.org/unsubb.html
To CHANGE your email address, click here:
http://www.techassist.net/forms/change.html
------------------------------------------
***NEW*** Tips Added Instantly!!!***
Submit Repair Tips here:
http://www.tech-assist.org/secure/tip/
Other related posts:
