[TechAssist] UPDATE - Re: Intermittent Shutdown - only one set now
- From: "KenyD" <ken.dyche@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 5 Jul 2003 08:41:49 -0400
Thanks guys. The mod to the Daewoo worked great. I also installed the
33ohm res across B/E of HOT and it ran all night fine. However, the
CTC203AX7 is still breaking down after 5-10 mins. I removed L14401 and
cleaned it completely before re-installation. Same fault, except the only
thing I can add is that when it shutsdown the relay clicks off, attempts to
come on again two or three times with relay clicking back and forth. Then
when it shuts down, no need to unplug it, just pressing power fires it back
up. Any other ideas? I'm still wondering about the modification re: the
18xxx series parts which aren't in this unit.
Thanks again;
Ken Dyche
Mississauga T.V. Inc. (est. 1952)
Mississauga, Ontario
Canada
----- Original Message -----
From: "Eric Manuel" <tvman@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, July 04, 2003 7:43 PM
Subject: [TechAssist] Re: Intermittent Shutdown - two different sets
> Hi Ken in the Daewoo set replace C404 with a 3.3 cap also put a 33 ohm
> resister across the base and emitter of the hot transister. On the
> CTC203
> resolder the coil that connects to the base of the hot from the driver
> transformer L14401 very small leads you may have to take it out and
> scrape
> the leads..Eric
> Eric Manuel
> Deer Lake Nfld
> Canada
>
> KenyD wrote:
> >
> > We're working on two seperate sets with intermittent shutdown. One's an
> > RCA, the other a Daewoo. We've hit a roadblock and were wondering if
anyone
> > has any clues.
> >
> > DAEWOO DTQ26SF1C- Intermittent Shutdown every few days, unplug set
and
> > plug back in and it's OK. We changed the eprom and a few caps under
> > speculation...same fault. Any ideas?
> >
> > RCA CTC203AX7 - Intermittent shutdown after 10-30minutes, unplug and
plug
> > back in and it's OK. We changed eprom, not change. We then rec'd the
> > modification regarding some resistors and a cap off pin23 of U18xxx.
> > However, I can't find any parts with an 18xxx series, nor are there any
> > indication of "blanks" showing 18xxx series parts. Any ideas?
> >
> > Thanks in advance.
> >
> > Ken Dyche
> > Mississauga T.V. Inc. (est. 1952)
> > Mississauga, Ontario
> > Canada
> >
> >
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