[TechAssist] Re: GE 20GT425 Turns OFF/ON Repeatedly
- From: "David Lessard" <mrfixit@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 9 Dec 2002 10:53:46 -0500
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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