[TechAssist] Re: GE 20GT425 Turns OFF/ON Repeatedly
- From: "teltek2" <teltek2@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 9 Dec 2002 10:20:34 -0500
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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