[TechAssist] Re: RCA PTK169PEC (P60752EB)...dead...technical question
- From: "Larry E." <videotech@xxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 18 Jun 2003 18:24:54 -0400
Jeff, the newer 2.2 caps are physically smaller than the original and you are
correct about putting in 105
celsius caps not the 85`s, I have seen the 2.2uf cap cause the
169`s to fail all by themselves (usually very high esr) but I generally replace
all
3 caps in the switch mode. CR4118 (and it`s filter, C4145 1000uf @ 35 volts)
should also be changed on any 169 you service, it can cause all kinds of weird
problems, ie, dead set, no color, intermittent shutdown, and more. If your
standby supply`s are good and your regulated run voltage is 143-145v`s I would
ship it out the door, hope this answers your question, Larry E
Larry Eastman
American TV & Electronics
Crystal River, Fl. 34428
352-795-0124
www.tvjunkyard.com
Intrepid Video Support wrote:
> The only thing I can find bad on this is C4102(?) the 2.2 cap.
> First, is it OK to use any 105 degree cap, even though it is much smaller?
> Second, For reliability, should I also replace the rest of the parts in this
> regulator circuit and the
> chopper?
> This set was in another shop about a year ago for a new HOT.
> I have not seen one of these where just one cap caused dead symptom..
> Customer stated, before it died, the power button would have no effect, but
> the volume buttons, channel
> buttons and menu would all have erratic functions, some times turning the set
> on/off, or sending the wrong
> command.
> They don't have the remote for this, so only symptom is from pressing the
> buttons on the front control.
> The front controls seem to be working for me.
> This is a weird one...anything I should do before delivering this set, with
> the REG circuit or front
> controls?
> Thank you.
>
> Jeff Dougherty
> Intrepid Video TV/VCR
> 263 S Front St
> Steelton PA 17113
> ph..717-939-7708 fax...717-564-4952
> www.intrepid-video.com www.tech-repair.net
>
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