Defects on the latest versions of my positioner.

[dreambox1959]

A strange phenomenon is occurring on a printed circuit board I modified some time ago.
On the BIS input/output board, the high frequencies are very attenuated.
I checked on older Vbox models, and I found this problem on one of the models.


The circuit behaves like a low-pass filter.
I found that the problem comes from the printed circuit board design.
I made a very simple modification that corrects the problem.
Remove a track, then a wire loop to ensure the connection.

 

[anto@]

great, my card is not the same as the one in the photo
in the photo there are 2 rca while in mine I only see 1 rca
for now I have not opened the jpc

 

[dreambox1959]

it is only the new model (with AGC control) , where this strange things appears !
posi with red and white RCA plug .

 

[anto@]

mine is an older version and has the same problem
on the 13 est 12731 H I measure 18 db less signal at the output and also the Met is 5 db lower
do I have to make the same change?
thanks