[TechAssist] Re: GE 20GT425 Turns OFF/ON Repeatedly
- From: HSWAD@xxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 9 Dec 2002 13:04:12 EST
Make a deal guys-I'll be good if you use your scope often. LOL. Hollis Bates,
Field Engineer-retired
In a message dated 12/9/02
11:24:59 AM Eastern Standard Time, phil245@xxxxxxxxxxxxx writes:
> Subj:[TechAssist] Re: GE 20GT425 Turns OFF/ON Repeatedly
> Date:12/9/02 11:24:59 AM Eastern Standard Time
> From:<A HREF="mailto:phil245@xxxxxxxxxxxxx";>phil245@xxxxxxxxxxxxx</A>
> Reply-to:<A
> HREF="mailto:techassist@xxxxxxxxxxxxx";>techassist@xxxxxxxxxxxxx</A>
> To:<A HREF="mailto:techassist@xxxxxxxxxxxxx";>techassist@xxxxxxxxxxxxx</A>
> Sent from the Internet
>
>
>
>
> 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:> > HREF="mailto:techassist@xxxxxxxxxxxxx";>
> techassist@xxxxxxxxxxxxx
> > > > To:> HREF="mailto:techassist@xxxxxxxxxxxxx";>techassist@xxxxxxxxxxxxx
> > > > 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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