Re: Tatung Monitor


"Mr. Land" <graftonfot@xxxxxxxxx> wrote in message
news:1135656469.344203.87060@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> Dave D wrote:
>> "Wayne Fitzner" <fitzner2754@xxxxxxxxxxx> wrote in message
>> news:xD_rf.2498$Z95.127@xxxxxxxxxxx
>> >I did what you said and found the capacitor. Got new one at Radio Shack
>> >and
>> >now it powers up like it should. Thanks!!!
>>
>> Well done :-)
>>
>> You may find other capacitors will fail soon, but at least you know what
>> to
>> look for next time and they are very cheap components to replace..
>>
>> Dave
>
> PMFBI, but I found this thread pretty interesting. Are you saying that
> the 'lytics in this set are notorious, or of this brand, or in general?
>

Electrolytics are IME the least reliable component in general, particularly
in switchmode power supplies. Any 'strange' fault qualifies for close
attention to electrolytics IMO.

> What is it about an electrolytic that would make it fail at room
> temperature but work OK when hot? I thought the can-types were just a
> couple of long sheets of aluminum foil w/ an insulator between?

With an electrolyte paste.

Maybe the electrolyte partially dries up and the heating process temporarily
reactivates and/or redistributes it, but that is a pure guess on my part.

Dave


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