[TechAssist] Re: GE 20GT425 Turns OFF/ON Repeatedly
- From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 9 Dec 2002 11:27:50 -0500
It could be worse, you could have been called a forum jocky. ( Alias, tube
jocky)
Phillip R Hull
phil245@xxxxxxxxxxxxx
----- Original Message -----
From: "David Lessard" <mrfixit@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, December 09, 2002 10:53 AM
Subject: [TechAssist] Re: GE 20GT425 Turns OFF/ON Repeatedly
>
> Ed,
>
> Point taken. However my question still remains. I would appreciate any
> pointers on how to diagnose a problem like the one I had. Furthermore I
> think that it's inappropiate for a fellow technician to suggest "we are
> tinkerers and not technicians". I became slightly defensive in my response
> because I don't take comments like this too lightly from technicians who
> should understand the problems with diagnosing intermittent problems.
> Comments like, "use your scope that's the professional way to
troubleshoot"
> and that "we a tinkerers" are negative comments. Sharing your knowledge is
a
> good thing,
>
> I believe positive comments whould have been more effective, then again,
it
> may just be the way I interpreted my fellow technician's response to my
> posting.
>
> Sorry if I insulted anyone.
>
> "Share what you know, learn what you don't"
>
> David Lessard
> Alexandria Electronics
> 50 Harrison Street
> Alexandria, Ontario
> (613)525-4502
> mrfixit@xxxxxxxxxxx
>
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of teltek2
> Sent: Monday, December 09, 2002 10:21 AM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: GE 20GT425 Turns OFF/ON Repeatedly
>
>
>
> David;
> Lower your angle of "attack",may have to read up on "Email Diplomacy 101".
> May just be the way you are coming across, Remember....wer'e here to
> help....;-)
>
> -Ed-
> Tel-Tek Electronics
> Ontario-Canada
>
> teltek2@xxxxxxxxxxxx
> ----- Original Message -----
> From: "David Lessard" <mrfixit@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, December 09, 2002 9:45 AM
> Subject: [TechAssist] Re: GE 20GT425 Turns OFF/ON Repeatedly
>
>
> >
> > Hollis,
> >
> > Yes I have a scope, a nice one too! And as a professional just how is
one
> > supposed to monitor a problem where there is a constant cycling of the
> power
> > OFF and ON. I ask you this question. Did you even read the symptom?
Anyway
> > tne problem is resolved, if you have any comments or suggestions in how
> > someone should go about troubleshooting an intermittent like this then
> feel
> > free to spread the word.
> >
> > "Share what you know, learn what you don't"
> >
> > David Lessard
> > Alexandria Electronics
> > 50 Harrison Street
> > Alexandria, Ontario
> > (613)525-4502
> > mrfixit@xxxxxxxxxxx
> >
> > -----Original Message-----
> > From: techassist-bounce@xxxxxxxxxxxxx
> > [mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of HSWAD@xxxxxxx
> > Sent: Monday, December 09, 2002 8:32 AM
> > To: techassist@xxxxxxxxxxxxx
> > Subject: [TechAssist] Re: GE 20GT425 Turns OFF/ON Repeatedly
> >
> >
> > But you still found it with the hunt and peck method which costs both
you
> > and
> > your customer money. Using your scope would have narrowed that down to
15
> > minutes or so while the trouble was in progress. I have been telling
guys
> > for
> > years to be a Tech not a tinkerer. Hollis Bates, Field Engineer retired
> USE
> > YOUR SCOPE
> > In
> > a message dated 12/9/02 6:00:01 AM Eastern Standard Time,
> > mrfixit@xxxxxxxxxxx
> > writes:
> >
> >
> > > Subj:[TechAssist] Re: GE 20GT425 Turns OFF/ON Repeatedly
> > > Date:12/9/02 6:00:01 AM Eastern Standard Time
> > > From:<A HREF="mailto:mrfixit@xxxxxxxxxxx";>mrfixit@xxxxxxxxxxx</A>
> > > Reply-to:<A
> > HREF="mailto:techassist@xxxxxxxxxxxxx";>techassist@xxxxxxxxxxxxx</A>
> > > To:<A
> HREF="mailto:techassist@xxxxxxxxxxxxx";>techassist@xxxxxxxxxxxxx</A>
> > > Sent from the Internet
> > >
> > >
> > >
> > >
> > > Symptom:
> > >
> > > Cyclic OFF/ON problem (relay clicking) usually after power-up but also
> > > occured intermittently. The cycle can be stopped by holding the power
> > > button
> > > ON during the next OFF/ON cycle, then the TV shuts off normally. The
> > > problem
> > > was intermittent, sometimes days between acting up.
> > >
> > > Solution:
> > >
> > > Found numerous postings regarding CR4118, replaced it. No change.
> > Confirmed
> > > switch was not the problem by replacing it with another one. No
change.
> > > Re-soldered in and around HOT area, transformers, etc. No change.
> Further
> > > investigation revealed several cold solder joints near R118U - 33ohm
> power
> > > resistor near CR4118. Visual inpection didn't reveal this problem, the
> > > joints appeared OK. The problem was discovered by applying pressure to
> the
> > > PCB near R118U. This dog is out the door.
> > >
> > > Thanks to all who provided input.
> > >
> > > David Lessard
> > > Alexandria Electronics
> > > 50 Harrison Street
> > > Alexandria, Ontario
> > > (613)525-4502
> > > mrfixit@xxxxxxxxxxx
> > >
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