From: petrus.bitbyter@hotmail.com
"Computer Nerd Kev" schreef in bericht
news:kf4pks$uc2$1@speranza.aioe.org...
> petrus bitbyter wrote:
>
>> Apparently something wrong in your horizontal drive signal.
>
> OK, so the sync signal going in is fine then?
>
>> Most likely the
>> line output transformer, maybe the horizontal coils but there are still
>> some
>> other possibilities. Be aware that the coils are current driven.
>
> Forgive my ignorance, but if a coil or transformer failed, would this be
> possible in such a way as for the monitor to function for the three
> minutes
> it usually runs before failure. Or did you mean the components associated
> with the the coil or transformer?
>
> Also, if I go to repair this part of the circuit (and let's assume I'm not
> replacing the Line Output Transformer, I don't suppose I could find a
> spare
> available), I know I'll need to discharge some capacitors, but should I
> discharge the high voltage output of the transformer as well?
>
> Thank's for your help.
>
> --
> __ __
> #_ < |\| |< _#
This kind of failure is pretty common especially with coils and
transformers. In this components insulation tends to degrade partially over
time, usually depending on the temperature. So a transformer may look liko
te perform excellent while cold but fail when it grows warmer. Off course,
other components may fail the same way sometimes. I'm afraid you to lack
both skills and equipment to find out what component(s) are actually
failing. Even well trianed and equipped professionals usually dislike this
type of failures. And, you're right about the line output transformer.
Hardly a chance to find a good replacement.
petrus bitbyter
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