[linux-dvb] channel switch troubles

Johannes Stezenbach js at linuxtv.org
Sun May 29 13:27:15 CEST 2005

Alex Kühn wrote:
> I had problems during switching channels with my dvb-s rev. 1.3 card. I 
> investigated this problem and found an interesting issue. Because this 
> topic is a bit bulky, I've written a short webpage about the topic:
> http://defiant.wavecon.de/~alex/dvbbug/dvbbug.html

Summary: LNB power supply worked at 13V (vertical), but was instable
at 18V (horizontal) -> tuning problems.
Solution: Added a 100uF capacitor in parallel to the existing 300uF one.

> Now my question: Does someone on this list has experienced similiar 
> problems and probably have better solutions for this?

I have no experiences (no sat equipment), but:
Maybe the 300uF is simply broken. It is not uncommon to electrolyte
capacitors to dry out if they are exposed to too much heat.


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