Not a problem - I used the 'B' one instead. This was fine for a couple of days till this morning when I switched on and noticed the PSU current dropping from 240mA down to about 120mA
I checked and found there was no 12V now on the 'B' f type. The thermal fuse (300mA) hadn't tripped.
I moved the LNB feed to my NB receiver setup and there were no issues and the LNB drawing was drawing about 100mA.
I've opened the serit and found what I presume to be the two tiny inductors that feed the +V to the Ftypes - on one end there was 12V and nothing on the other. There were splashes of solder/metal in there though
So in short does anyone know what the value of this inductor might be?
I believe that quite a few have had this problem, me included. What I have done, others too I understand, is fit a through hole inductor and polyfuse inside the Serit NIM. I fitted a 10uH inductor and 300mA polyfuse in series between the centre pin of the F socket and theLNB voltage input pin of the NIM with the inductor as close as possible to the F socket. I don't know the original inductor specs but as 10uH has an impedance of around 50K ohms at the frequencies we're using I went with that.
There is this thread showing a fix, this OM has used a hairpin inductor rather than a through hole one as I did but you'll get the idea.
time for a quick RS order then
just asking if you can provide more info about the 10uH inductance.
I tried to find RFC (Choke) in Digikey but no workable results.
Then I tried only Inductance and found something like M10135-ND
My question now, to decide what to buy, is how have to be the Auto-resonance Frequency or any other HF critical parameters?
the choke isn't critical, I just used one from a typical Chinese sellers 0307 size selection I bought from Ebay, something like this.
https://www.ebay.co.uk/itm/1-4W-Color-R ... 2052303138