Re: G05-805 EHT problem

Bad replacement diode?

Phil Morris wrote:

>
>>> I've lubricated the pots and re-flowed the solder joints on the main
>>> connectors.
>>
>>
>>
>> Phil, lubing the pots and turning them back and forth many times can
>> be OK in a pinch, but you can experience the same problem if the pot
>> id just plain shot. Replace then if at all possible.
>
>
> Well, pots now replaced but unfortunately the problem remains. :(
>
> So, as before, on power up the image enlarges by about half an inch then
> shrinks about half an inch. This might go on for a few seconds, then it
> might stop. It might then be perfectly fine for ages, then all of a
> sudden the image will grow larger again, then shrink back to its
> original size. Sometimes the growing/shrinking of the image is very
> subtle, sometimes much more noticeable.
>
> What failing component could cause this, seeing as it's not the pots,
> electrolytics (swapped out) or the main diode?
>
> I'm kind of wary of poking around too much with the thing switched on as
> I don't fancy get a large voltage through my arm. :)
>
>
>
> Thanks,
> Phil
>
>
>
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Received on Thu Jun 17 10:32:32 2004