Am Freitag, den 13.02.2009, 11:36 +0100 schrieb Patrick Maier:
Can you give me the part-number of that chip. Where did you get it?
Hi Patrick, In Germany, you can get it from Segor: http://www.segor.de/suche.shtml?foto=0&Q=LNBP16&M=1
Because of their pretty high "Mindestbestellwert", people often buy more chips then actually needed to fix their FF cards. So it might be a good idea to ask/search on vdr-portal or offer the spare ones there.
So This is the power supply for the LNB and creates the different voltages and frequencies telling which band and H/V is required.
Yes, exactly.
Can I test the actual output with an oszilloscope? You know which signals must be there when in low/high-band and H/V?
Usually, you won't even need an oszilloscope to detect failure of the LNBP on the Rev1.3. With a dead chip, the LNB supply voltage is missing or way to low in almost all cases.
If VDR is tuned to a transponder with vertical polarization, you should see 13V supply on the connector. With horizontal polarization, it should be 18V.
Cheers, Christian